TEST SERIESPAPER II
SET – 11. In digital multimeter, setting is:-
(a) Low (b) Shunt is used (c) Zero (d) High resistance
2. To increase range of Ohm meters to measure high voltage required internal resistance to be:- (a) Low (b) High (c) Constant (d) Balance with deflection of probes
3. Advantages of A. C. over D. C., for use on long range transmission is:-(a) Safe and easy to generate (b) It is easy to rectify A.C.(c) Thinners conductors are used (d) All above are correct
4. In capacitor charging, if key is open and if distance between plates is increased, then(a) Capacitance decreases (b) Capacitance increases(c) P. D. increases (d) P. D. decreases & stored
5. E.M.F. induced in the generator is:-(a) Lenz’s law (b) Electromagnetic induction(c) Flemings right hand rule (d) Kirchhoff’s Law
6. Oil temp. measured with:-(a) Thermistors (b) Thermo couple (c) Diodes (d) Temp. indicator
7. MCS :-(a) Zener diode used for as amplifier (b) Tunnel diode used for voltage regulator(c) As in ((b), and as an oscillator (d) Iaraetop diode is used for switching circuit & electronic tunner
8. Conversion of (4(D)16 to binary:-(a) (1010011011)2 (b) (1011101011)2 (c) (1010101011)2 (d) (1010011000)2
9. Conversion of (37)10 to binary :-(a) (1100101)2 (b) (1010101)2 (c) (1100100)2 (d) (1010011)2
10. MODEM is:-(a) Modulator/ Demodulator (b) Software Prog.(c) Operating device (d) Input/ Output characteristics
11. Pilot hole to be drilled in Plexiglass, bit used:-(a) Ordinary drill bit can used (b) Specially designed drill bit should used (c) Twist drill to be used (d) Wood bit can be used
12. Filler material added to resin:-(a) To increase pot life (b) To improve viscosity & weight(c) Increases strength (d) All of the above
13. Drift induced angle:-(a) 30 (b) 45 (c) 60 (d) 90
14. MCS:- (a) Cold water quenching minimize distortion & cracks.
(b) Hot water quenching minimize distortion & alienates cracks. (c) Spray quenching reduces the wear and corrosion.(d) Cooling at room temp.
15. Heat treatment of Al. alloys and after it allowed to cool for 4 to 5 days is (a) Natural ageing. (b) Artificial ageing. (c) Both (a) & (b) (d) Room temp. of alloys.
16. In series of drill size, most accurate drill is:-(a) A to Z (b) Fractional series (c) No. 80 to No. 1 (d) Any one above
17. What size of hole to be drilled, worm thread, have ZTPI(a) 2.3134 (b) 2.3144 (c) 2.3212 (d) 1.564
18. Most important factor which affects the indication of dye – penetrant inspection check is:-(a) Not proper application of Dye (b) Not proper application of penetrant(c) Parts are not thoroughly degaussed & cleaned (d) All of the above
19. Hooks spanner used for:-(a) Round nuts and having notches on outer edge. (b) Square nuts and having a hole on outer periphery (c) Hexagonal nuts having holes (d) None of the above
20. In hardness testing, Barcol tester used for:(a) Stainless steel (b) Magnesium (c) Cu & Brass & Al. (d) Hard materials
21. Which of the following is primary cell:- (a) Lead acid (b) Silver zinc (c) Carbon zinc (d) Nickel cadmium
22. Negative plate of Ni-Cd battery is:-(a) KOH, hydroxide (b) Cadmium sulphate (c) Cadmium hydroxide (d) Nickel chloride
23. Which of the following is incorrect:-(a) Wings slanted with lateral axis is dihedral angle(b) Chrod of the wing to relative wind is called angle of attack(c) Angle of attack is angle between chord & speed of a/c (d) All are incorrect.
24. Wing aspect ratio is:-
(a) Wing span / average chrod (b) b2 / area (c) b2 / area2 (d) All of the above
25. Rubber hose are identified by:-(a) Inside dia (b) Outside dia (c) Outside dia and its length (d) Its size and dia
26. An steel flared tube and fitting(a) Black (b) Red (c) Brown (d) Blue
27. Double flared end fittings is for:-(a) Ease of construction (b) To resist shearing effect imparted on tubes(c) To resist for concentric on the tube flares (d) To take and withstand shock load on tube
28. Taper pin is used for:-(a) Shear load (b) For good play between joints (c) For flexibility (d) Good rigidity & slackness
29. In treatments on metals, metallising is the process:-(a) Anodizing of the surface to protect. (b) Layer of pure Al. on steel(c) Al, Cu, Zn sprayed from pistol on the metal surfaces (d) All of the above
30. Flap tab is:-(a) Servo tab (b) Balance tab (c) Trim tab (d) None of the above
31. Removal by water washing of water soluble dye penetrant is:-(a) Spraying of water jet directly (b) Cleaned with wet cloth (c) Both (a) & (b) (d) None of the above
32. Circlip washer used for:-(a) Where continuous vibrational load (b) Lightly load application (c) Where wear of metals is a factor
33. MCS, related to ATA 100 code:-
(a) No 30 - lights (b) No 33 – hydraulics (c) No 61 - propeller (d) Both (a) & (c) are correct
34. Which important factor related fuel jettision of a/c:-(a) Fuelling accomplished at the end through wing tip(b) Fuelling accomplished at outer board of wing side(c) Fuelling jettision should be accomplished within minutes.(d) Make precaution that there is no fire hazard.
35. Important consideration regarding pressure fuelling of a/c:-(a) Minimizes the time required for fuelling (b) Keeps the a/c weight within limit(c) Minimizes the chances of fuel contamination (d) Reduces the chances of radio hazard
36. Pressure fuelling method, important precaution should be taken:-(a) The pump pressure must be minimum (b) The pump pressure should be correct(c) The a/c elect. System must indicate the gauge readings. (d) A/c should be grounded.
37. MCS related to thickness of sheets:(a) No. 1 SWG is smaller than No. 9 SWG. (b) Thickness of 18 SWG smaller than 16 SWG(c) Thickness of 14 SWG more than 18SWG (d) Thickness of 18 SWG smaller than 14SWG
38. Tem. CPCP means:-(a) Corrosion prevention & Control prog. (b) Corrosion prog & Control prog. (c) Corrosion prevention & Corrosion problem (d) Control prog. & Corrosion prevention
39. Fuel designation above grade 100-(a) It is iso – heptanes rating in fuel (b) It is iso – butanes rating in fuel(c) It is iso – methane rating in fuel (d) Its performance numbers.
40. MCS related to Bearings:-(a) Bearing should be stored horizontally & reprotected once in a year(b) Slight corrosion on outer race of bearing is allowed (c) Shielded bearings should be inspected for corrosion.(d) All are correct
41. MCS (a) Roller bearings take thrust load. (b) Radial bearings are used for shaft, gears etc.(c) Ball bearings with stand heavy radial loads (d) All above correct
42. While demagnetize the parts:-(a) By passing sufficient A.C. into the field. (b) By passing a.c. slowly out to the magnetic field.(c) By repeatedly apply a.c. over the part (d) Increasing the strength of magnet then cutout a.c.
43. Repair of the crack in the weld is done by (a) Butt weld (b) Edge joint (c) Lap joint (d) Rosette weld
44. Blacksmith anvil is made up by:- (a) Casting and machining (b) Extension (c) Forging (d) Both (b) & (c) are correct
45. For soft metals, drill angle is:-(a) angle may increased (b) angle may decrease(c) angle will be more than the normal (d) angle is more or less
46. The hole drilled have rough surface causes :-(a) The drill will be dull (b) The drill speed is slow, as large heat produced(c) The drill speed is higher (d) Both (a) & (b) above
47. Plain washers are used for-(a) For gripping (b) For torquing (c) For insertion of cotter pin in hole (d) All are incorrect
48. MCS (a) Corrosion on Al., have etching and pitting (b) Corrosion on Cu., have greenish film(c) Corrosion on Mg., have etching and pitting (d) All are correct
49. Which is correct with respect to air speed indicator(a) Pitot pressure is transmitted to the capsule(b) Static pressure is fed directly to outside of the capsule(c) Pitot & static pressure difference is directly measured on the gauge (d) All above correct
50. Smallest reading of micro meter is linked with(a) Low magnification (b) High magnification(c) High or low magnification (d) can be easily readable
51. Undoubtfully wrought alloys:- (a) Cylinder head – according to Titterten, it is cast alloy(b) Crank shaft - forging (c) Cam head (d) Alclad sheet
52. Mark correct statement, at time of fuelling of a/c:-(a) Aircraft should be grounded through lines by carbon embedded in tire(b) Drag chain connected to the fuel truck(c) Bonding is connected between a/c, fuel truck & to the fuel filter (d) All above correct
53. Dies are used for:-(a) Cut external threads on round stocks (b) It is made up of steel and hardened and tempered(c) Both (a) & (b) are correct (d) To cut internal threads
54. MCS (a) QNF, atmospheric pressure reads zero.
(b) QNH, barometric pressure above elevation at meansealevel(c) QNE, barometric pressure at altitude (d) Both (b) & (c) are correct
55. Schematic diagram – 8112 / series(a) Individual component do not locate in a/c (b) Individual component to locate in the system(c) Do not locate component in the system (d) Are use to locate parts & assemblies of parts for installation in a/c
56. Tolerance is:-(a) Permissible variation in the mating parts (b) Variation of dimensions(c) Difference between upper & lower dimensions (d) It is clearance between the hole and bolt
57. Fretting corrosion:-(a) Between skin & rest around a hole (b) Black pits of deposits(c) Both (a) & (b) (d) It is not visible around the cracks & holes
58. Quality and quantity of X – rays is:-(a) Intensity and penetrating power (b) Frequency and intensity(c) There is no quality but intensity is there (d) Brightness and penetrating power
59. MCS , relative to jacking of a/c:-(a) Nose of a/c into direction of wind (b) Tail of a/c should be in the backward direction of wind(c) As in (a), the surface should be level & concrete
60. Flap tab is(a) Balance tab (b) Servo tab (c) Trim tab (d) None
61. What do you mean by tern ‘aspect ratio’(a) span + Mean cord (b) (span)2 + (area)2 (c) (span)2 + (area/2)2 (d) span2 / area
62. Algorithm is(a) finite and definite steps and must have output (b) finite steps and output is not necessary(c) having output only (d) none of the above
63. UNIX is(a) multi operating system (b) single operating system(c) utility software which may be used by many users (d) software
64. What unit in following taken larger time to access(a) floppy disc memory (b) semiconductor memory(c) Winchester memory (d) magnetic tap memory
+65. To drill hard metal or stainless steel
(a) high pressure high rpm (b) high pressure low rpm(c) low pressure high rpm (d) low pressure low rpm
66. In ATA code system, electrical wires are identified by number & letters with(a) by left side & right side (b) by suffix and prefix(c) both (a) & (b) (d) by bottom no.
67. Taper roller bearing can take(a) radial loads and axial loads in one direction (b) radial load axial loads can be take in either direction
(c) both n(a) & (b) (d) radial loads in heavy and moderate axial loads
68. Worn out dimensions of steel and moderate axial loads.(a) Cr. Plating (b) Granodising (c) Cadmium plating (d) none
69. Rockwell hardness measures(a) diameter of impression (b) resistance of penetration(c) depth of penetration (d) both (b) & (c)
70. How can you distinguish between heat treated metal or non – heat treated metal(a) By using 10% caustic soda solution (b) By using 5% cupric solution(c) by Rockwell tester (d) by using 10% of muriatic acid in 1% water solution
71. If transmission ratio is 1:2 than output current will be(a) 2:1 (b) Double than input current(c) reduced half to input current (d) will be four times
72. If a bulb utilizes power of 28 watt and given voltage is 28 volt than resistance offered in ckt will(a) 28 (b) 1 (c) 28 A (d) 28 watt
73. In Triode(a) grid, plate, heater (b) cathode, plate, heater(c) heater, grid, cathode (d) cathode, heater, plate and spiral wire between plate and cath
74. In a circuit if C = coulomb, W = weber, A = amp, S = second and V = volt than relation will(a) W α S-1 ~A (b) W α S ~V (c) W α S ~C (d) W α S-1 x V
75. In electricity, a parallel circuit is there, what will be the correct statement(a) Sum of the different current in each path will equal to the total current(b) Potential difference across each path will be different(c) Both (a) & (b) (d) Current will be same in each path.
76. In triode, diode, transistor,(a) Obeys ohm’s law (b) Doesn’t obey ohm’s law(c) Offered non linear resistances (d) Both (b) & (c)
77. In a.c. circuit(a) V rms = V max (0.807) (b) V rms = 1.414 V max(c) V max = 1.414 V rms (d) Both (a) & (b)
78. In Pitot static system, the static vent is of the flat plate tube used anywhere in the a/c structure to prevent(a) Position error (b) Instrument error(c) Protection against ice formation (d) Both (a) & (c)
79. Altimeter consist of(a) Two capsules (b) Three capsules(c) Barometric setting system (d) All the above
80. In Ni – Cd battery if potassium carbonate is formed on the plate, the main reason behind that (a) Battery is over charged (b) Good battery ventilation(c) High internal resistance (d) High electrolyte level
81. In drill sizes – No: 1 size(a) Is smaller than A (b) Is greater than Z(c) Is smaller than I/64 (d) None
82. Thermo plastic materials have property(a) Soften on heating (b) Harden on heating(c) Harden on cooling (d) Both (a) & (c)
83. Coating of pure aluminum on Al. alloy(a) Pure clad (b) Al clad (c) Both (a) & (b) (d) None
84. Cracks can be welded by(a) Butt (b) Fillet (c) Lap (d) None
85. In altimeter system, static vent is disconnected from pressurized cabin then(a) Altimeter read more (b) Altimeter & A.S.I. will read low(c) Airspeed will read more (d) Both (a) & (c)
86. In the absence of barometer, altimeter can be checked by(a) Vacuum gauge (b) Vacuum chamber(c) Micro manometer (d) None
87. In endoscopie method probe perform which function(a) It relays, direct the beam of light for illumination(b) It displace a focused and undistorted image at the eye piece(c) It has no. of lenses in its path (d) Both (a) & (b)
88. Rigid tubing are sized by(a) O. D. Diameter (b) Inside diameter (c) Cross section (d) Both (a) & (c)
89. Mark the correct statement – in case of flare less rubbing, should not tighten the nut(a) Not more than 1/3 turn after resistance is felt (b) Not less than 1/3 turn after resistance is felt(c) Not more than 1 turn after resistance is felt (d) None
90. Mark the correct statement(a) QNH, setting the standard sea level pressure in accordance with atmospheric pressure(b) Setting the pressure to make the altimeter read on prevailing pressure is QFE(c) Setting the barometric pressure scale to make the altimeter read airfield height above set level is QNH(d) Both (b) & (c)
91. T4 & W indicate(a) Solution heat treatment only (b) Solution heat treatment and quenching(c) Artificial aging (d) Solution heat treatment and aging
92. O or A precedes the dash indicates(a) Annealed (b) Heat treatment (c) Strain hardening (d) Quenching
93. Decimal 29 is equivalent to(a) 11101 (b) 10110 (c) 11110 (d) 10101
94. In tubing has a diameter from ¼ to 5/16” then support should be at distance
(a) 9” (b) 12” (c) 16” (d) 22”
95. In flexible hose replaceable hose consists of(a) Nut, stud, union (b) Socket, nut, ripple (c) Socket, nut, union (d) Nipple, clamp, socket
96. Borax is used in brazing(a) replace flux (b) to accelerate oxides(c) to absorb oxides (d) spelten should not run, out of the join
97. Metal cutting by flame due to(a) oxidation (b) burning (c) intensive oxidation (d) melting
98. To weld high carbon steel(a) high carbon steel rod is used (b) low or high carbon steel is used(c) intermediate carbon or middle carbon steel is used (d) low carbon steel
99. In following, undoubtedly wrought is(a) piston (b) cylinder head (c) crank shaft (d) alclade sheet
100. X – ray will be best(a) short wave length high penetration (b) very long wave length high penetration(c) long wave length low penetration (d) high current high penetration
101. In are welding the length of arc will be(a) equal to the rod diameter (b) double the rod diameter(c) 2.5 the rod diameter (d) none
102. In oxy hydrogen and oxy acetylene, temperature of oxy hydrogen will be(a) more (b) less (c) equal (d) unpredictable
103. Instrument are calibrated and ranged according to(a) instruments manufacturer specification (b) type certification data sheet(c) maintenance manual(d) specification data sheet, type certificate data sheet or a/c flight manual
104. In a/c electrical system, insulation on cables mainly used(a) nylon and cotton (b) Teflon (c) both (a) & (b) (d) rubber
105. In ceramic matrix is used(a) epoxy resin (b) polyster (c) metal (d) Both (a) & (b)
106. In composite matix is used(a) metal (b) fiber (c) carbon (d) fibre reinforced polymer
107. Key ways & slots can be made by(a) knife file (b) triangular file (c) half round file (d) square file
108. In a metric micrometer main scale has crossed 2 graduation and O thimble scale has hundred graduation andOrdinary scale 45, division will be matched with zero line(a) .001 cm and .245 cm (b) .001 cm and 2.45 cm(c) .01 cm and 2.45 cm (d) .01 cm and .245 cm
109. Mark the correct statement(a) Intergranular corrosion may be remove by mechanical means(b) Intergranular caused due to improper heat treatment(c) it is a surface corrosion (d) none
110. Too much pressure of clamps on the flexible hose will cause(a) cold flow (b) hot flow (c) rinkles (d) both (a) & (b)
111. Mark the correct statement(a) scratches or nicks deeper than 10% of the wall thickness may be repaired(b) any crack or deformity in a flare may be cause for reject on(c) dent is permissible less than 20% of the tube diameter (d) both (b) & (c)
112. Which of the following factors is considered basic knowledge of X – ray exposure (a) the density, thickness, size and shape of the objects to be exposed (b) the type of X – ray machine used & hazards(c) the distance and angle for 10 minutes exposure(d) the type and exact size of the discontinuity to be detected.
113. Bevel gear is used(a) to transmit the motion at an angle to the shaft in one direction (b) to transmit the motion in opposite direction(c) as speed reducer (d) both (a) & (c)
114. If two current carrying conductor spaced at a distance of 2 cm and current is 2 amp force will be(a) attractive if current is following in same direction(b) attractive if current is following in different direction(c) attractive if A C is following in one of the conductor (d) both (a) & (c)
115. Soaking period(a) affect internal structure (b) varies with thickness per inch of area (c) varies with time (d) both (a) & (b)
116. Interpoles are connected(a) in series with armature coil (b) interpole has the same polarity as the next main poles(c) interpole has the same polarity as the previous main poles (d) both (a) & (b)
117. Exfoliation is(a) extreme case of Intergranular corrosion (b) more harmful of Intergranular attack(c) it occurs along the grain boundaries, under thin oil, grease or varnish film (d) both (a) & (c)
118. How can you remove a swaged fitting(a) drill out by the one gage small bit (b) prick out by a drill punch(c) unscrew the thread insert (d) all of the above
119. How can the external thread checked by (a) micrometer & sriap gage (b) ring gage(c) taperness of the thread and ovality (d) all of the above
120. Which of the following occurs along the lines of cold working and may be triangular & Intergranular in nature(a) stress corrosion (b) surface corrosion (c) Intergranular corrosion (d) electrochemical corrosion
121. Coin tap in composites (a) A sharp sound indicates no defect (b) damaged part will give solid sound(c) Both (a) & (b) (d)
122. Mark the correct statement(a) ultrasonic method can not useful for thick material(b) thin materials can easily identified by X – ray method(c) welded joints may be checked by dye penetrant (d) both (b) & (c)
123. Mark the wrong statement (a) honey comb matrices can be cut by diamond router (b) harrigborne router bit used for aramid(c) brad point bit can be used with libre glass only (d) all are wrong
124. Mark the correct statement (a) (b) (c) best substitute of boron is hybrid of Kevlar and carbon graphic (d) all are wrong
125. Entrapped flux in brazing causes (a) gas pocket porosity (b) oxidation(c) corrosion (d) none
126. If you have same 17S rivets of ¼” diameter, you should use in construction(a) within 10 to 20 minutes after aging (b) should not use after 5 hour aging(c) can be drive within one hour before they have age hardened(d) should not used after age hardening
127. Mmicrometer reading with tur error metric micrometer have .01 least count & +ve error is .02(a) (b) (c) (d)
128. Vernier caliper with .05 zero error (a) (b) (c) (d)
129. Mark the correct statement (a) carbon has greater strength than graplute (b) ceramic has greater compressive strength(c) (d) none of the above
130. Mark the correct statement
(a) Holicoil has made by 18 – 8 stainless steel & having diamond shaped cross section
131. In brazing blasting is used for(a) scalling (b) oxidation (c) corrosion (d) sladging
132. Silver soldering temperature (a) 3050 C – 6000 C (b) 5050 C – 8000 C (c) 6000 C – 8500 C (d) 10000 C – 12000 C
SET 28 (OCT – 1996)
133. in a capacitor(a) capacity depends on separation of plates and measured in farade(b) capacity depends on area of plates and measured in farade (c) capacity depends on nature of dielectric material(d) all
134. Relation between volt, ampere and weber is given by(a) amp/volt2 = weber(b) amp X volt = weber (c) volt/amp = weber (d) none
135. Which statement is correct relating to swaging (a) if the diameter of fitting is too large, it has been over swaged(b) if the diameter of fitting is too small, it ahs been under swaged(c) if the diameter of fitting is too small, it has been over swaged and cable fitting must be rejected(d) none
136. Mooring is the process in which (a) head of the a/c is in prevailing wing whenever possible (b) choke all wheels fore and aft(c) tie down the point on aircraft (d) all
137. How will you convert a galvanometer in voltmeter (a) by connecting high resistance in series with galvanometer
138. What is the work of catalyst(a) as curing agent (b) as hardener (c) mixed with regin (d) all are correct
139. Nome is a(a) honey comb. material (b) reinforced fibre (c) metrix material (d) none
140. The properties of composite material is (a) do not corrode (b) stress,fatgue resistant (c) it reduce wear (d) all
141. Zener diode(a) has high forward voltage rating (b) has negative resistance(c) has a sharp breakdown of low reverse voltage (d) used as amplifier
142. In a dye penetrant test before applying developer what shall be done(a) dye should be completely flushed out (b) only excessive dye should be removed(c) the rinsing operation is completely carried out (d) both (b) & (c)
143. Which one is the correct statement regarding heat treatment of AL alloy(a) longer soaking time & lower pooling rate result in a greater softness
(b) longer soaking time & higher pooling rate result in a greater softness
144. Altimeter consists of stack of (a) 3 evacuated capsules (b) 2 evacuated capsules (c) barometric scale adjustment (d) all
145. In an a/c drawing, the symbol indicates(a) stainless steel (b) brass (c) plastic (d) cork & febric
146. Which of the following statements are associated with the term fillet(a) space between the teeth (b) a bounded surface to eliminate sharp corner(c) (d)
147. Normalizing of steel is done by (a) heating the steel just above the critical point & cool in air(b) heating the steel just above the critical point & cool in furnace(c) heating the steel just below the critical point & cool in air(d) all
148. In British system dye penetrant flaw detection is indicated by(a) PFD (b) UFD (c) MFD
149. Butyl rubber is used for(a) Tire & tube (b) Seals & gasket (c) a/c fuel tank lining (d) none
150. Dump flux user(a) poroaity (b) erater (c) channeling
151. Ale lad in a(a) aluminum alloy sandwiched between for aluminum coating
152. 7075 – 0 indicates(a) full annealed condition
153. Which of the following rivet does not require heat treatment(a) 2017 (b) 2117 (c) 2024
154. In oxyaootolone welding equipment oxygen and acctylene are identified by(a) left and right hand thread (b) color and length of cylinder(c) diameter of the hose (d) both (a) & (b) are correct
155. Cleaning of acrylic(a) MEK (b) Aliphatic naptha (c) Aromatic naptha (d) Acetone
156. Elastometer rubber is(a) rubber impregnate in metal (b) shock absorber
157. NDT of aluminum alloy is done by(a) heating in KOH and NAOH (b) heating above critical point and cool in air
158. UDF indicates(a) ultrasonic flow (b) radiography (c) dye penetrant flow detection
159. Carbon in iron at normal temperature as
(a) ferrite (b) dissolved iron matrix (c) austenito (d) special iron matrix
160. For brazing the flame used(a) oxitizing (b) carbonizing (c) neutral (d) reducing
161. High carbon steel contains carbon(a) 0.50% - 1.5% (b) 0.30% - 1.50% (c) 0.50% - 1.05% (d) 1.50% - 2.2%
162. Crack at the surface should be welded by(a) butt welding (b) lap welding (c) fillet welding
163. In chalk test we used (a) hot fluid (b) cold fluid (c) both (d) none
164. Al. alloy core with pure aluminum coating is known as(a) ale lad (b) pureelad(c) pure clad and electro statically preventive (d) all of the above
165. Bearing strength is(a) the strength that resists foree that tends to tear it apart
166. In NDT X Ray equipment are graded according to the (a) volt - range (b) electromagnetic radiation (c) amp (d) penetrating power
167. To impress the tensile a through (a) case hardened (b) solution heat treated (c) precipitation heat treatment
168. Thermiator(a) rom temp. coefficient (b) variable temp. coefficient(c) + ve temp. coefficient (d) - ve temp. coefficient
169. Circuit containing register, capacitor, diode, semiconductor is a (a) linear circuit (b) non linear circuit (c) bipolar circuit (d) unipolar circuit
170. 1110101 is equivalent to (a) 117 (b) 29 (c) 63 (d) none
171. In lend acid battery x dimentation occurs because of(a) overharging (b) frequent charging and discharging(c) over discharging (d) high rate of discharge
172. A circular mill is(a) a circular whose diameter is 0.001
173. If the bar magnet in the fig. will be removed shown the electromagnetic induction will be (a) oppose the emf (b) act in same direction (c) will not repot but attempt
174. Vent plug of Ni ed battery should be cleaned by(a) distilled water only (b) distilled water and detergent(c) hot water and distill water (d) detergent
175. Current is 2.5 amp. Voltage 12v. used for consume(a) 1800 J (b) 2 J (c) 60 J (d) 18 J
176. Pizu electric effect is
177. In British system of drawing the inverted triangle gives(a) important dimensions (b) heat treatment (c) surface finish
178. Baffles in hydraulic tank is given for(a) providing an expansion tank is given for (b) resisting fuel surging within the tank(c) providing internal structural integrity (d) preventing fuel overflow during refueling
179. In a blind revet the length between manufacture head in the end is(a) grip length (b) grip range (c) shank length of the revet
180. In a revet layout the shank diameter should be(a) twice the thickness of the thicker sheet (b) 1/8th thickness of the thicker sheet(c) three times the thickness of the thicker sheet
181. In a bolt and nut assembly after applying treque, cotter pin hole is not aligning the bolt may be(a) slightly tightened to next slot. (b) slightly loosened to next a slot (c) washer
182. A/C chains are specified by(a) load carrying capacity (b) pitch and number of links(c) both (a) & (b) (d) distance between 2 links
183. Helicoil insert has a notch and tang along end to(a) facilitate installation (b) the removal of tang after it has screwed into the trapped thread hole
184. Unless specified the troque to be applied to a bolt and not assembly should(a) degresed dry and clean thread (b) lubricated thread
185. Double dash rivet is(a) 2117 rivet (b) 2024 rivet
186. Crinckle washer is used for(a) hard steel to take food (b) instrument mounting for left load and electrical installation
187. Cotterpin for casrellated nut is made off(a) stainless steel (b) corrosion resistant steel(c) cadmium plated low carbon steel (d) both (a) & (c) are correct
188. Gyroscope the phenomena which causes continuous spin of outer ring due to coincidence of rotor ring with Cuter gimble ring axis is called(a) gyro wander (b) gyro tambling (c) apparent precession (d) gimble lock
189. Rate of turn indicator(a) rate gyro (b) tied gyro (c) carth gyro (d) free gyro
190. Difference of pitot and static pressure is measured by(a) ASI (b) Altimeter (c) VSI
191. True airspeed of aircraft is maximum
192. Altimeter operation mechanism consists of a(a) two aneroid capsule (b) three aneroid capsule(c) adjustment for barometric pressure provided (d) all
193. Free gyre has(a) the plane of freedom (b) the planes are right angle to each other and three plane
194. Turn and slip indication operator respective by (a) gyro only (b) external force and gravity (c) None
195. Spherical roller bearing will take(a) radial load heavy (b) axial load slightly (c) both
196. Micron is (a) millionth of meter (b) thousandth of meter
197. A hole to be reamed should be drilled to under(a) 0.001” 0.002” (b) 0.003” - 0.007” (c) same size
198. Every third tooth of the hackshaw is made at might(a) to give clearance for the cutting (b) ripsaw tooth is provided
199. The vernier scale has(a) +ve error (b) -ve error
200. Least count is defined as(a) one main scale division into the total division of the vernier/ thimble scale(b) 1 MSD (c) TSD
201. Least count of 50 divisions on the circle of micrometer whose pitch is 1 min(a) 0.01 mm (b) 0.02 mm (c) 0.5 mm (d) 0.002 mm
202. Backslash of a micrometer is caused due to(a) manufacturing (b) wear and tear (c) wear on the nut (d) all
203. Snap gauge is a(a) go & no. go guage (b) it will snap at preset torque load (c) gauge which meamtre TPI
204. aluminum alloy heat treated sheet(a) chromium sheet (b) heavy sheet metal (c) any sheet metal
205. What is the rmp of the gear having 150 teeth(a) 166.6 (b) .500 (c) 150 (d) 300
206. Which of the following is not contained generally in aircraft specification type data sheet(a) empty weight of the aircraft (b) useful load of A/C(c) payload of A/C (d) control surface movement
207. Rocker arm bearing is(a) plain bearing
208. Fig. The drawing indicates(a) taper (b) spot facing (c) aluminum sheet
209. Hydrogen is given off during(a) the entire servicing of the lead acid battery (b) charging and discharging(c) in the competition of charging in Ni cd battery (d) during charging only
210. The main memory of a computer is(a) RAM (b) ROM (c) Hard disc (d) Micro processor chip
211. The binary equivalent of 35 is(a) 100011
212. T6 designation of Al alloy indicates(a) solution heat treated and then artificially aged (b) solution heat treated and then stabilized(c) artificially aged only (d) solution heat treated and then cold worked
213. 0.10 mm is equivalent to(a) 0.039” (b) 0.041” (c) 0.035” (d) 0.045”
214. The major alloying element in 7075 Al alloy is(a) magnesium (b) silicon (c) Mg and Si (d) Zinc
215. The purpose of turnbuckle is to(a) make major adjustment in cable length (b) adjust cable tension (c) both a & b (d) none
216. A 7 x 10 cable is made up of(a) 7 strands of (b) 19 strands of 7 wire each (c) both a & b (d) none
217. Which one of the following is boots self locking nut figure(a) (b) Elastic Anchor Nut (c)
218. Identify the given tool(a) adjustable plier (b) spring plier (c) lever jaw wrench (d) none
219. A double flare should be used on(a) stainless steel (b) 5052 - 0 (c) 6061 – T al - alloy (d) both b & c
220. Bead width of bolt weld should be(a) 2 to 3T (b) 3 to 5T (c) ¼ to ½ T (d) 11/3 T to 11/2 T
221. In a fillet weld, the penetration requirements are(a) 60 to 80% of the thickness of the base metal (b) 100% of the thickness of the base metal(c) 200% of the thickness of the base metal (d) 25 to 50% of the thickness of the base metal
222. In the fluorescent penetrant inspection(a) the defect will show the flow as a brilliant yellow green(b) the defect will show the flow as a light yellow green(c) the sound area will appear white (deep blue violet)(d) the diffect will show the flow as deep blue violet
223. In jacking of aircraft(a) main wheels are raised together (b) nose wheel is raised to 6” above the ground(c) nose wheel is raised for free movement of it (d) none
224. Centre drill is used to (a) make hole and reaming in one operation (b) make hole and countersunt in one operation(c) make taper hole (d) all of the above
225. For cast iron, the included angle of drill is(a) 1180 (b) 700 (c) 900 (d) 1400
226. Select the correct statement(a) hand tape are available in two sets(b) bottoming tap is used to smoothen the bottom of a blind hole (c) plug tap is used at the last (d) taper tap is used first
227. The external threads on a bar is made by (a) taps (b) stock (c) dies (d) reamer
228. The defeet in wheel nut is inspected by(a) due
229. The voltage rating of fully charged cell of 20 Ni cd battery is(a) 1.8 to 2.1 volt (b) 1.24 to 1.3 v (c) 1.4 to 1.7 v (d) 1.3 to 1.5 v
230. If the temperature of a confined liquid is held constant and the pressure tripled, the volume will be(a) triple (b) be reduce to 1/3rd original (c) remain the name (d) none
231. If the pilot head is blocked then which instrument is affected(a) ASI (b) Altimeter (c) Turn & bank indicator (d) Slip indicator
232. Which statement is correct(a) QNE setting gives height above sea level of the airport
233. DPI color of dipl (a) (b) QNH setting gives airfield elevation(c) QFE setting makes the altimeter read zero on landing at aerodrome (d) All
234. Through which material will(a) copper (b) iron (c) aluminum (d) all are correct
235. Which symbol represented(a) 2 (b) 3 (c) 1 (d) all are correct
236. How can the state of charge of a Ni ed battery be determined (a) by measuring the specific gravity of the charge (b) by measuring charge(c) by the level of electrolyte (d) all
237. Zero fuel weight is the (a) dry weight plus the weight of full crew pax end cargo (b) basic operating weight without fuel(c) maximum permissible weight of a loaded a/c including passenger, pox, crew, cargo without fuel(d) maximum weight of the a/c with crew, oil, pox, less fuel in wing tank
238. The crapty weight of an aircraft is determined by (a) adding the net weight of each weighing point and multiplying the measured distance to the datum(b) aubtracting the tare weight form the acale reading and adding the weight of each weighing point(c) multiplying the measured distance from each weighing point to the datum times the sum of scale reading less the tore weight
239. Unless otherwise (a) clean dry thread (b) clean, Lightly oiled thread (c) either a or b (d) none
240. A fibre type, self locking nut must never be used on an a/c if the bolt is(a) under shear loading (b) under tension loading(c) both tension and shear loading (d) subjected to rotation
241. Aircraft bolts are usually manufactured with a(a) class 1 fit for the threads (b) class 2 fit for the threads(c) class 3 fit for the threads (d) class 4 fit for the threads
242. Generally speaking, bolt grip length should be(a) one and one half times the thickness of the material through which the extend(b) equal to the thickness of the material through which they extend plus approximately one diameter(c) equal to the thickness of the material through which they extend or together(d) 2 times the diameter
243. A particular component is attached to the a/c structure by the use of an a/c bolt and a castleted tension nutcombination. If the cotter piarole does not align with the recommended torque. A acceptable practice is
244. In a spot welding atypical defect is (a) porosity (b) crack (c) irregular shape (d) both b & c
245. In oxyacetylenewelding while shutting off the flame (a) oxygen is shut out (b) acetylene is shut off first (c) both are shut off simultaneously
246. Oxyacetylene flame with equal volume of oxygen and acetylene gives the types of flame as shown (a) carbonzing (b) oxidizing (c) neutral (d) there is no such flame
247. The silver solder metal meits at (a) 200 – 400 degree cent (b) 300 – 600 degree cent(c) 1000 – 2000 degree cent (d) 850 – 1200 degree cent
248. The most commonly used symbols for electromagnetic flow direction method is(a) UFD (b) MFD (c) PFD (d) EFD
249. In oxyacetylene welding it is better prentice while shutting off the flame(a) Shut off oxygen first (b) Shut off acetylene first (c) Turn off the regulator (d) Turn off simultaneously
250. The silver sol deny metal melts at (a) 200 – 400 degree cent (b) 600 to 850 degree cent (c) 1000 – 1600 degree cent
251. The core of reinforced polymer thermoplastic is filled as(a) metal (b)
252. Synthetic thermoplastic(a) when heated becomes soft (b) when cooled becomes hard (c) when heated becomes hard (d) both a & c are correct
253. A crack may be repaired by(a) butt welding (b) spot welding (c) lap welding (d) edge welding
254. Annealing is the process(a) makes a metal soft (b) relivca the internal strain (c) toughen the metal (d) both a & b are correct
255. T4 & W are the symbols utilized for heat treatment of Al alloy sheet indicates(a) solution heat treated only (b) solution heat treated & quenched but not aged(c) precipitation heat treated (d) solution heat treated
256. Rockwell hardness tester(a) measures resistance to penetration (b) measures the diameter of the impression(c) measures depth of (d) both a & c are correct
257. Which is true in relation to magnesium alloy(a) it is most susceptible metal to corrosion(b) it has get high resistance to corrosion quality and can be heat treated(c) it is the lightest metal used in the a/c (d) both a & c are correct
258. Galvanic corrosion is(a) dissimilar metal corrosion
259. Decimal 29 is equivalent to binary number(a) 11101 (b) 10110 (c) 11110 (d) 10101
260. SCR (Silicon Control Rectifier) has(a) 2 terminals (b) 2 terminals are forward biased and 1 terminal are/is reverse(c) 3 terminals (d) none of the above
261. A triode consists of(a) a plate grid and a heater (b) measures the diameter of the impression(c) measures depth of (d) both a & c are correct
262. Zenor diode is used(a) to regulate viltage (b) controls the spikes (c) both a & b
263. Diode, triode and transistors(a) obey ohm’s law (b) does not obey ohm’s law
264. Taking all the factors into consideration the most commonly used metal as electrical conducting(a) aluminum (b) copper (c) silver (d) iron
265. A galvanometer may be converted to a voltameter by connecting(a) low resistance coil in parallel with meter (b) high resistance coil in parallel with meter(c) high resistance coil in (d) low resistance coil in series with meter
266. In ATA coding system the size and type of the electrical cables/wires in a/c are given by:(a) prefix and suffix (b) side by side (c) numbers and letters (d) none of the above
267. Hydrogen gas is given up(a) entire servicing of Ni – cd battery (b) when load acid battery gets over charged(c) towards the end of the charging of Ni cd battery (d) both b & c are correct
268. The strength of the electrom is determiner(a) No. of turns of the coil (b) Strength of the magnet(c) Speed of rotation of magnet (d) All of the above
269. 13 NC B indicates
(a) pitch diameter ½” (b) B – external thread(c) 13 NC indicated 13 TPI and have antiqnal form (d) all
270. In gear system a driver and driven on the shaft to get the name direction of notation(a) bevel gear is used (b) internal and external gear combination is used(c) as in a and no mechanical advantage is obtained (d) none
271. In regular interval, to calibrate a micrometer where you carried out(a) in normal environment and controlled temperature(b) in air conditioned room but does not proof(c) a room is calibrated upto 20 30 microns, but not air conditioned (d) a room is calibrated upto 100 – 150 microns, and also air conditioned
272. To bring the sheet together to get air tight joint, we use(a) draw set (b) cleco fastener (c) aligning camp (d) none
273. Choose correct statement(a) Philips screw driver is blunt at end (b) Read and prince screw driver is blunt on end(c) Both are interchangeable (d) All
274. To avoid vibrating stress in tube lines(a) no bend is done (b) two bend is done(c) at least one bend is done (d) prefembly no bend is done and if bend is
275. Dzua fastener consists of(a) stud, washer and receptacle (b) stud, gromate and receptacle(c) as in (b) and gromatic is made of spring (d) none
276. Air drill in aviation industry is pre forced to electric setting (a) no outer equipment is required(b) it is available in various shape, sizes, running speed, drilling head angle(c) high initial cost and loss maintenance (d) both a & b
277. Double flaring is(a) Not necessary on steel tubing
278. After cyaniding quenching is done in(a) brine (b) water (c) oil (d) both a & c
279. To stop solder from flowing normally(a) clay is used (b) a flux is used
280. Hard soldering (silver soldering is low temperature brazing)(a) is done at low temperature brazing (b) produces strength equal to parent metal(c) both a & b (d) none
281. Flame is used to heat metal during heat treatment for (a) small parts (b) where furnace is not available(c) heat treatment requirement is not very exacting(d) large parts and where a particular area is to be heated
282. Mark the correct statement(a) detection welds in thicker material UFD is best (b) X – ray best for welds in sheets(c) both a & b (d) All
283. When flying along magnetic equator, dip will be(a) increased (b) remain unchanged (c) decreased (d) depend upon direction of flight
284. Identification of alloy is made of by(a) alloy identified by color content by strips (b) alloy by strips and content by color
285. Heat treated parts having bake – dirt and scale can be cleaned(a) wire brush (b) scraping (c) sand blasting (d) none
286. Pre & past treatment of cd – plating and ferros part depends on(a) strength of part (b) surface hardening and hard spots(c) corrosion resistance (d) all
287. The soaking time varies as(a) till alloy uniform ally heated (b) 2 hrs/unit volume(c) 1 hr/unit e.s. area (d) none
288. Vernier scale is also used in(a) microscope and spectometer (b) sextant and spectrometer(c) both a & b (d) none
289. In brazing(a) post heat treatment may be carried to relive stresses(b) post heat treatment may not be carried to relive stresses
290. Prepregs material is(a) eliminate manual mixing and weighing (b) must be stored in freeze(c) also made in unidirectional (d) all are correct
291. Which statement is correct(a) boron fiber is made by depositing boron(b) tungsten and ceramic fiber in high heat application(c) ceramic used in heat application, dissipating heat slowly (d) both a & b
292. Disboad and water in honeycomb and impact damage is detected by(a) laser holography (b) ultrasonic (c) visual inspection (d) none
293. In npd transistor, arrow head indicates(a) hole flow (b) election flow(c) minority carrier flow from emitter to base (d) majority carrier flow from emitter to base
294. Which statement is correct(a) weld in thick material can not be detected by ultrasonic(b) weld in thin material can be detected by X - ray(c) always detected by dye penetrant (d) all above are correct
295. The opposition offered in Ac circuit are called(a) impedence (b) resistance (c) indu tance (d) all
296. Which of the following is used as voltage regulator device(a) carl on pile voltage regulator (b) magnetic amplifier regulator(c) transistor regulator (d) all are correct
297. Range of ammeter can be increased by(a) connecting high resistance in parallel (b) connecting high resistance in series(c) connecting low resistance in parallel (d) connecting low resistance in series
298. Ampertemeter has(a) low resistance in series (b) high resistance in series (c) low resistance in parallel
299. Transistor is biased(a) base and emitter forward biased (b) base and emitter reverce biased
300. In cetrode, the screen grid is(a) always at positive and the voltage is less than plate voltage
301. In square threads(a) width, height and length are same (b) difficult to machine(c) more strength (d) all are correct
302. In ATA – 100 systems, 36 represents(a) hydraulic to machine (29) (b) oxygen system (32)(c) pheumatic system (36) (d) landing gear system (32)
303. Which of the statement is correct regarding bearing(a) if corrosion is found on the outer surface, it should be rejected(b) bearing must be inspected periodically at least once in a year(c) shielded bearing is used be inspected for corrosion (d) both b & c are correct
304. The diameter of the aluminum sheet increase(a) as the gauge no increase (b) as the gauge no decrease(c) remain constant (d) varies from gauge to gauge
305. Piezo electricity is produced(a) by the vibration of ceramic (b) by the vibration of quartz, Rochelle salt and ceramic (c) sound waves have no connection with this (d) all are wrong
306. Titanium can be identified by(a) spark test (used for various metal & some time from) (b) moisturing and scratching with a pencil(c) chemical test (d) both a & b are correct
307. The heat resistance resin is(a) epoxy (cyclo eliphatic resin) (b) polyester (c) thermosetting plastic (d) thermoplastic
308. For maximum ductility, elongation and impact resistance of Mg – alloy is(a) solution heat treatment (b) casted (c) precipitation heat treatment (d) both a & c are correct
309. Precaution in Al, welding(a) neutral flame is used (b) preheating is needed (c) flux is used (d) all are correct
310. The thickness of the conducting and nor – conducting coating in ferrous metal can be measured by(a) varies coliper (b) varnier micrometer (c) ultrasonic (d) eddy current method
311. To measure the thickness of the hollow tubular member normally done by(a) distructive method (b) eddy current method (c) ultrasonic method (d) none
312. a combination set is used as(a) depth, gauge, tri – square, scriber (b) protractor, scriber, tri square(c) center head, protractor (d) none
313. Mark the correct statement regarding the hardness tester(a) brinell system uses diamond point (b) vikers uses round ball(c) above are correct (d) none
314. In nickel cadmium battery(a) during discharging, the current flows the negative plate to positive plate and oxygen atoms are driven out from the positive plate(b) electrical leakage is measured by millimeter between cell and casting (c) both a & b are correct
315. Hydrogen is given off during
(a) all stages of LAB servicing (b) over charging of Nickel (c) both a & b are correct (d) none
315. Dies are used to cut(a) internal threads of a nut (b) external threads of a nut
316. The figure indicating(a) wire type external circlip (b) wire type internal circlip(c) plate type internal circlip (d) plate type external circlip
317. Coating of Al alloy by a layer of pure Al is called(a) Alelad or pureclad (b) Alodizing (c) Anodizing (d) all are wrong
318. Per changing the direction from linear to reciprocating motion:(a) rack is used with another spur gear (b) rack is used with another rack 129(c) sector gear is used with external gear (d) both a & c are correct
319. In composite material Kevlar indicated by:(a) yellow color (b) black color (c) silver (white color)(d) there is no color identification in
320. Plastic stop nut should not be used where:(a) temperature is very low (b) temperature is higher than 250 deg. F (2500 F) (c) vibration is very high
321. (a) How many types of corrosion forms on (b) What are the factors which affects the corrosion?(c) How preventive measures can be taken to prevent the formation of corrosion the a/c?
322.(a) Write down the name of the device given in figure(b) Write about at least three types (c) How it functions and describes its working principle?
323. Step no transformers are characterized by
SET 16 (FEB – 2001) 324. Color code of 2024 Al – alloy tubing is
(a) white – 1100 (b) green – 3003 (c) red (d) black - 6053
325. Head marking of corrosion resistance steel (CRS) bolt is(a) raised dash (single) (b) raised ring/dash (c) recessed triangle (d) no head marking
326. Rivet of 1/8” diameter is replaced by (a) two 1/6” diameter rivet (b) three 1/16 dia rivet(c) three 1/32 dia rivet (d) none [ four 1/16 dia rivet]
327. Rivet can be removed by(a) center punch (b) prick punch(c) pin punch (drift punch) – drive or tapered punch (d) alignment punch
328. head marking shows which bolt(a) CRS (b) AN – standard (c) Al – alloy (2024) (d) close tolerance
329. After welding part must be(a) hardened (b) normalized (c) annealed (d) tempered
330. When material is forced through a die to take the shape of die, is called(a) Forging (b) Rolling (c) Extrusion (d) Casting (Mg)
331. All long extruded parts such as bar, tube, pipe etc are stored(a) horizontally (b) horizontally with well supported along its length(c) vertically inclined at an angle of 600 (d) all
332. Bronze is Cu – alloy containing(a) tin (b) zinc (c) titanium (d) all
333. Lay lining in the fitting indicates(a) size of the nose (b) types of the fluid to be used(c) date of manufacture (d) to identification of co – axial junction
334. Stress corrosion occurs in(a) wing skin (b) compressed part (c) bolt hole (d) tubing with tabbed thread fitted in cast alloy
335. In joined part, the opposition offered in crushing(a) shear strength (b) bearing strength (c) compression strength (d)
336. The part which is dry and un lubricated, which of the following occurs(a) erosion (b) abrasion (c) fettlers (d) all
337. In radiography NDT, which of the following factor does not affect the test(a) distance of film and exposure angle (b) time(c) material thickness, density, shape & size (d) film characteristic
338. Which of the following pin is used to take shear load(a) taper pin (b) clevis pin (c) roll pin (d) cotton pin
339. In pulse echo method, liquid coupling used for(a) reduce a caustic attenuation (b) reduce a caustic mish match(c) (d)
340. The sketch giving the description of object made up of two or more parts(a) detail drawing (b) assembly drawing (c) installing drawing (d) none
341. Identify the bolt (CAIP – BL/2 -3) figure(a) 12 point ball (b) 12 point drilled bolt (c) 12 point extender washer bolt (cup washer locked) (d) 1 double hexagon head bolt
342. Minimum bend radius of flexible hose depend upon(a) type of the material (b) size of the hose (c) working pressure (d) both a & c
343. Regarding the plumbing of rigid tube, which is true(a) less dia tubing requires less distance support (b) less dia tubing requires more distance support(c) large dia tubing required less distance suport (d) large dia tubing requires more distance support
344. Double flaring provides
(a) smoothness (b) more concentric (c) seals better (d) all
345. Combination of corrosion resistance steel (18 – 8 steel)(a) 8% Ni and 18% chromium (b) 18% Ni & 8% chromium(c) 29% chromium & 8% nickel (d) 8% chromium & 29% nickel
346. As per ATA – 100 specification, the correct sequence of air conditioning, fuel, navigation and oil system is(a) 21,28,34,79 (b) 21,34,28,79 (c) 31,34,52,80 (d) 32,28,34,79
347. Find out the reading of metric micrometer(a) 5.46 (b) 5.64 (c) 0.564
348. Pitch of the micrometer is(a) 20 TPI (b) 40 TPI (c) 30 TPI (d) 50 TPI
349. Axial distance covered by a threaded fastener in one complete revolution is called(a) pitch (b) lead (c) bolts (d) none
350. Identify the figure(a) Typical extractor tool (b) Tang break punch (c) inserting tool (d) none
351. In chisel, the shape of the cutting edge is grounded(a) convex (b) convex to concentrate the shock at the center of the cutting edge
352. In engineering drawing, the lines indicate the alternate position of parts or relative position of a missing part(a) hidden line (b) phantom line
353. Least count of micrometer is(a) 0.01 mm (b) 0.001 mm (c) 0.0001 mm (d) 0.1 mm
354. What amount of load is acting on the bolt f extension bar is used on the torque wrench as shown in figure (a) 150 lbs (b) 125 lbs (c) 175 lbs (d) 200 lbs
355. Magnetic flux depends upon(a) no. of turns (b) rpm (c) rate of cutting of flux (d) all
356. Inter granular corrosion is repaired by(a) cleaning the part and coating the zinc – chromatic primer (b) replace the part(c) both a & b (d) none
357. Fatigue crack occurs due to(a) continuous reversal load (b) in new parts (c) both a & b (d) none
358. Corrosion in a hole is removed by(a) helicoil insertion (b) acres sleeve used (c) scrap the part (d) drilling
359. To reduce the precipitation, the medium used is(a) water (b) air (c) oil (d) brine
360. Vertical portion of the structure in aircraft is indicated by(a) butt line (b) water line (c) station line (d) all
361. Electrolyte in Ni – cd battery
(a) takes no part in chemical reaction (b) serves as a conductor on – OH ion(c) both a + b are correct
362. (0.0625)10 = ( )2
(a) 0.110 (b) 0.101 (c) 0.011 (d) 0.100
363. (1010101)2 = ( )10
(a) 110 (b) 85 (c) 75 (d) 95
364. Power factor in d. c. circuit is(a) unity (b) infinite (c) zero (d) none
365. Unit of electrical energy is(a) Kilowatt hour (b) ampere (c) watt hour (d) all
366. Power can be calculated by (a) V2/R (b) l2R (c) V.l (d) all
367. Effect on the part by varying frequency in eddy current testing is(a) skin effect (b) - (c) –
368. Which instrument is affected by position error(a) Altimeter (b) ASI (c) VSI (d) Both a & c
369. Pitot pressure is used in(a) Altimeter (b) ASI (c) VSI (d) all
370. Figure shows(a) I angle projection (b) II angle projection (c) III angle projection (d) Sectional projection
371. The heat conductivity of a metal depends upon(a) heat treatment (b) alloy in the material (c) tensile strength/hardness (d) all are correct
372. VHF is used for(a) short distance communication (b) in broad casting(c) long distance communication (d) point to point microwave
SET 18 (JUNE – 2000)
373. In 7075 (a) annealed (b) strain hardened (c) solution HT (d) none
374. One r is dash on bolt head indicates(a) CRS bolt (b) NAS close tolerance bolt (c) AN standard bolt (d) none
375. The line used for reference of part is (a) reference line (b) hidden line (c) phantom line (d) black line
376. The color of 6053 Al – alloy is(a) red (b) black (c) grey (d) white
377. Lock bolt, which indicates flat head is
(a) ALPP (b) ALPB (c) ACST (d) ALSF
378. In flexible hoses stack is given(a) 2 to 3% of total length (b) 5 to 8% of total length(c) 3 to 9% of total length (d) 10% of total length
379. When AL – alloy rivet has highest strength(a) 5056 - T (b) 2117 – T (c) 2024 - T (d) 5056 – W
380. Al – alloy is not heat treated properly to have uniform grain boundaries it has(a) stress corrosion (b) galvanic corrosion (c) inter granular corrosion (d) fretting corrosion
381. Which one is unpaired(a) battery - accumulator (b) diode – NRV(c) AC generator – vortex generator (d) EMF – MMF
382. Which is used to transfer rivet size from template to new sheet is(a) centre punch (b) pin punch (c) alignment punch (d) transfer punch
383. A side clearance between piston ring and cylinder wall is measured by
(a) telescopic gauge (b) thickness gauge (c) micrometer (d) plug gauge
384. When base circuit is open at R, then(a) bulb can not be turned off (b) bulb can be turned off(c) bulb can not be effected (d) high current will flow in circuit
385. The resistance of conductor depends on(a) temperature (b) length and material (c) cross – sectional area (d) all
386. In an inductive circuit(a) current lags behind voltage by 90o (b) current leads behind voltage by 90o
(c) current and voltage are in phase (d) none
387. In magnetic particle inspection, nickel plating does not give indication of(a) crack (b) discontinuities (c) corrosion (d) none
388. In dye penetrant inspection, the defects under while light appears(a) black (b) green (c) red (d) all
389. Which is unpaired(a) dye penetrant – capillary acceptance (b) ultrasonic test – peizo electricity(c) eddy current test – current acceptance (d) magnetic test – skin test
390. Dye penetrant inspection is applicable to(a) ferrous alloys only (b) plastic and non metal(c) non ferrous alloys metal (d) all
391. In ultrasonic test, when mechanical stress vibration is applied to crystal quartz then these are(a) electrical energy and voltage are produced (b) more vibration are produced(c) as in (a) and varies with the thickness of crystal (d) none
392. Form of corrosion which occurs between metal and nonmetal is(a) filltform corrosion (b) crevice corrosion (c) exfoliation corrosion (d) fretting corrosion
393. Normalizing is applicable to(a) Cu - alloy (b) Al – alloy (c) Ferrous alloy only (d) Both a & b
394. Main content of 5056 Al – alloys is(a) Zn (b) Mg (c) Cu (d) Si
395. Freating the parts in anhydrour ammonia is(a) carburizing (b) nitriding (c) cyaniding (d) nor – malizing
396. For maximum elongation, ductility, tensile strength and impact resistance Mg – alloy is(a) solution heat treatment (b) casted (c) precipitation heat treatment (d) none
397. Which one is not primary cell(a) Zn – carbon cell (b) Lead acid cell (c) Alkaline cell
398. Ni – cd battery is charged with(a) constant current varying voltage (b) constant voltage varying current(c) both a & b (d) none
399. An ac circuit consists of inductance of 10, capacitance 4 & resistance 8 the impedance of the circuit is Z = R2 (XL – XC)2
(a) 6 (b) 10 (c) 5.5 (d) 8
400. Glider has lift due to(a) high aspect ratio (s/c) (b) high lift/co – efficient of lift (L/C) ratio(c) symmetrical wing (d) more wing area
401. In flight extending flaps(a) increase lift (b) increase lift and drag both (c) increase drag (d) reduce stalling speed
402. Which has increasing order of strength(a) 2S, A14ST, 17ST, 24ST (b) 2S, 24ST, 17ST, A17ST(c) 2S, 17ST ,24 ST (d) 2S, A17ST, 24ST, 17ST
403. Composite has(a) resistance to wear (b) high strength to weight ratio (c) resistance to corrosion (d) all
404. The static vents with the flat surface plate at two positions to(a) minimize position error (b) have is formation freedom (c) both a & b (d) none
405. Heat treated defect in metal is detected by(a) ultrasonic test (b) eddy current testing (c) dye penetrant testing (d) radiography testing
406. An ac circuit has inductance 3 and resistance of 4, then impedance of the circuit is(a) 3 (b) 1 (c) 5 (d) 7
407. The maximum radius for bending of Al – alloy should be(a) 3 times the sheet thickness (b) 6 times the sheet thickness(c) 9 x sheet thickness (d) 10 x sheet thickness
408. The truth table is for
(a) OR - gate (b) X – OR gate (c) AND - gate (d) NANAD – gate
409. Beryllium copper has greater advantage of(a) creep (b) high strength and uniform properties(c) corrosion resistance (d) uniform grain structure
410. Mg is(a) Susceptible to corrosion (b) Has tendency to crack (c) Resistance to corrosion (d) Both a & b
411. For most metals, which oxy – acetylene flame is used(a) neutral flame (b) oxidizing flame (c) carburizing flame (d) none
412. Which one is heat treatable alloy(a) 24 S (b) clad 24 S (c) A17 S (d) Any Al – Cu alloy
413. Rack is mesh with a gear, it is used to change (the purpose of rack and pinion is to change)(a) rotary motion to reciprocating motion (b) reciprocating motion to rotary motion(c) both a & b (d) none
414. Lift depends upon(a) velocity of relative wind (b) density of air (c) wing span (area) (d) all
415. Metal matrix composite is a recent conceptional material in which(a) resin is reinforced with metal (b) resin and fibers are reinforced with metal(c) fibers are reinforced with metal during molten stage (d) all are correct
416. In SAE – 1030, carbon percentage is(a) .30% (b) 9.5% (c) 10% (d) 30%
417. To roll a pure Al – sheet over Al – alloy is called(a) Al - clad (b) Pure – clad (c) Laminated Al (d) Both a & b
418. Magnetic particle inspection (MAP) can be done when flow is(a) at or near the surface (b) on or in depth of surface(c) near or in depth of surface (d) all
419. Cd – plating is done on steel parts(a) to prevent corrosion (b) to built up (c) to give lusture & brightness (d) all are correct
420. Heated – treated and non – heat treated metal 25, distinguished by(a) magnetic particle inspection (b) eddy current test (c) dye penetrant inspection (d) ultrasonic test
421. Titanium is heat treated by(a) normalizing (b) full annealing (c) case hardening (d) all
A B Y0 0 00 1 11 0 11 1 0
422. Maximum bending in case of copper tubing is(a) three times to internal diameter (b) six times to internal diameter(c) nine times to internal diameter (d) twelve times to internal diameter
423. Pickling of steel is carried out in(a) H2SO4 (b) Muriatic acid (c) all (d) none
424. Peizo electric effect is(a) if mechanical stresses applied to a quartz crystal, then voltage is induced(b) frequency depends on thickness (c) both a & b
425. Electroplating provides(a) corrosion resistant surface (b) wear resistant surface (c) both a & b (d) none
426. Re – heating is done to(a) remove strain and stresses (b) remove effect of heat treatment(c) remove hardness and brittleness (d) none
427. In cable strand, the wires are performed to provide(a) corrosion resistance (b) flexibility (c) prevents from ravalling (d) both a & b
428. The piston engine works on(a) Boyle’s law (b) Brayton cycle (c) Charles’s law & Otto cycle (d) Both a & c
429. The mechanical efficiency of piston engine is determined by(a) engine speed (b) fuel speed (c) mean effective pressure (d) mixture ratio (throttle setting)
430. The main alloying element is 7075 Al – alloy is(a) Cu (b) Mn (c) Zn (d) Si
431. The tubes are sized by(a) inside diameter in increment of 1/16” (b) inside diameter in increment of 1/32”(c) out side diameter in increment of 1/16” (d) out side diameter in increment of 1/32”
432. Flared tube fitting used in a/c are made of(a) Al - alloy (b) Cu (c) Steel (d) All are correct
433. Muntz metal consists of(a) 60% of Cu and 40% of Zn (b) 60% of Zn and 40% of Cu(c) as in (a) and basically brass (d) as in (b) and basically brass
434. Steel has fine grain structure, when(a) when heated above the critical temperature (b) when heated below the critical temperature
435. The soldering of Al – alloys differs from other metals due to (a) high heat expansion and contraction (b) greater heat input(c) uneven expansion and contraction (d) all
436. Kirchhoff’s law is applicable is(a) d.c. (b) a.c. (c) d.c. circuit having resistance (d) ac & dc
437. In modulation, the available band is-
(a) one (b) two (c) no band (d) many band
438. The modulation in which, amplitude is kept constant and frequency is changed is called(a) amplitude modulation (b) space modulation(c) frequency modulation (d) phase modulation
439. The angle of attack is the (a) acute angle between aircraft longitudinal axis and chord line to which aerofoil is mounted on the aircraft (b) horizontal acute angle between the symmetry aircraft and wind direction from which it touches the a/c(c) the acute angle between the symmetry of the aircraft and the chord line of aerofoil section(d) all are correct
440. In NDT of material by Dye penetrant inspection (DPI) the volume of defect is interpreted by(a) Staining rate (b) Staining speed (c) Staining extend (d) All
441. In UST, scanning is carried out by moving both probes simultaneously in opposite direction for(a) flash butt joint (weld) (b) heavy forgings(c) heat treatment defect (d) thickness measurement
442. During fuelling. The most necessary precaution to observed(a) grounding connection first made to aircraft and then fuelling vehicle(b) grounding connection first made to fuelling vehicle and then the aircraft(c) skillness of fuelling person (d) all are correct
443. The fluid use for all types of aircraft engine except rocket is(a) gasoline (b) air (c) ATF (d) All are correct
442. In composites, the strength is provided by(a) reinforced fibre (b) core (c) resin (d) a and fibre
443. In hardness testing of composite, the hardness is measured(a) resin (b) reinforcing fibre (c) specific chart (d) both a & c are correct
444. In a composite repair the part is steeped rather than to be scrafed for(a) uniform shear stress (b) uniform tensile stress (c) smoothness (d) both a &b
445. After honeycomb repair, the moisture entrapment is inspected by(a) radiography (b) ammeter (c) laser holography (d) all
446. In uniform fluid flow, the fluid is first made to flow through a tube and the pressure exerted by the fluid ismeasured by(a) dynamic pressure (b) static pressure (c) reynold’s no. (d) all
447. PARKETON is used for protection of(a) steel (b) numinium (c) Mg. (d) As in a and cable
448. The rust and corrosion is removed from highly stressed steel parts by(a) abrasive paper (b) fine buffling cloth on buffling wheel (c) wire brush (d) all
449. Centre drill is used to produce
(a) short hole and CSK hole (countersunk) (b) short hole and large hole(c) both a & b (d) none
450. During repair procedure of composite part treatment is done for(a) small disbands (b) restore surface protection (c) seal honeycomb casting (d) none
451. Synthetic rubber used in the aircraft is designated GRM as(a) poly sulphide polymer (b) isobutylene(c) complex of butylenes and cresylonitrile (d) government rubber mono – vinyl acetylene or neoprene
452. The neutralilze the surface of Ni – cad battery compartment(a) Boric acid (b) Water (c) Backing soda (d) All
453. Clevis pin used(a) with head up position (b) as in (a) & washer must be applied under it
454. Peel ply means - (a) prevent excess resists (b) remove, after cure(c) prevent vacuum bagging from stricking to the paint (d) all are correct
455. In magnetic and non – magnetic material, coating thickness of ferrous and non – ferrous alloy should bemeasured by(a) eddy current (b) magnetic particle test (c) micrometer caliper (d) all
456. Which takes primary load(a) fiber (b) matrix (c) both a & b (d) none
457. Which takes in part of transferred load(a) fiber (b) matrix (c) both a & b (d) none
458. In case hardening nitriding process(a) with the part this heated ammonia gas is circulated within the furnace chamber
459. T – section, Z – section and angles are formed by(a) rolling (b) forging (c) extrusion (d) all
460. Hole must be inspected for cracks or burrs(a) before reaming (b) after reaming (c) before & after reaming (d) none
461. When two surfaces fit tightly together, but can move relatively to one another(a) fretting corrosion (b) intergranular corrosion
462. Unit of magnetic flux is(a) webre (b) Newton meter (c) both a & b (d) none
463. Which statement is correct(a) welded joint of thick material can not be inspected by ultrasonic test(b) thin sheet metal welds are more satisfactorily checked by X – rays
464. P. N. junction in transistor has(a) forward bias (b) reverse baise
465. Which fibre has higher compressive strength(a) carbon fibre (b) aramin
466. Mark the correct statement(a) Hot water quenching minimizes distortion and alleviates crack
467. Galvanometer is transferred in ammeter(a) By connecting low resistance in series to the galvanometer(b) By connecting high resistance in series to the galvanometer(c) By connecting low resistance in parallel to increase range(d) By connecting high resistance in parallel to increase range
468. Mark the correct statement(a) Off set screw drivers are constructed with both ends bent at 900 to the shank(b) Rachet screw driver is used for heavy duty(c) Reed and prince screw driver is interchangeable with philips so (d) All are correct
469. Where high temperature is used for brazing(a) for high power solder (b) special type of flux is used (c) not used for brazing (d) none
470. High heat of Al – sheet from fire causes(a) Increase ductility (b) Decrease ductility (c) Increase resistance (d) none (increase, conductance)
471. In artificial aging hardening is done at(a) moderate temperature (b) room temperature (c) critical temperature (d) none
472. Overnight parking shall be done(a) position the a/c in down wind direction (b) position the a/c in up wind direction(c) as in (b) and light a/c must be tied (d) as in (c) and heavy a/c must be tied
473. In double start thread(a) lead is equal to pitch (b) lead is 2 times of pitch (c) pitch is 2 times to lead (d) none
474. Hacksaw blade length is measured(a) between center of end holes (b) from the one end of blade to other end
475. Color of 2024 – T Al – alloy is(a) grey (b) green (c) blue + yellow (d) red
476. In drawing which shows the position of part in relation to other is (a) detail drawing (b) assembly drawing (c) installation drawing (d) sectioning drawing
477. The minimum distance between two clamps of a/c tube is(a) 16” (b) 24” (c) 8” (d) 36”
478. Close tolerance bolt is identified by(a) triangle marking on head (b) crossed triangle marking on heat(c) circle marking on heat (d) triangle on head with plus marking within it
479. While jacking, the approved procedure is(a) both wheels are raised together (b) wheels are raised one after another(c) (d)
480. The class of fit required for a tight drive fit is (a) class – 1 (b) class -2 (c) class -3 (d) class -4
481. Piston engine’s mechanical efficiency differs due to(a) difference of pressure (b) difference of temperature(c) difference of grade of fuel used (d) difference in mass fuel
482. A device which gives latest control and is mounted at the opposite surface of wing(a) spoiler (b) vertex generator (c) tab (d) flap
483. The percentage of water can be detected by(a) USI (b) DPI (c) Endoscope (d) Radiography
484. Aircraft bolts are generally manufactured with a(a) Class – 1 fit for the threads (b) Class – 2 fit for the threads(c) Class – 3 fit for the threads (d) Class – 4 fit for the threads
485. The Hose of 100LL AVGAS dispenser is(a) red (b) (c) black (d) green
486. Which is low energy logic circuit(a) TTL (b) ECL (c) Both a & b (d) none
SET 37 (JUNE – 2002) 487. Color of the fire, protection fluid line is
(a) red (b) brown (c) green (d) brown & orange
488. A/c bolts are manufactured with always(a) class 1 fit (b) class 2 fit (c) class 3 fir (d) class 4 fit
489. Which of the following precision instrument issued for lightening the nut on bolt with proper torque is(a) socker wrench (b) torque wrench (c) ratchet wrench
490. For repairing the oversize hole with sleeve, the hole must be drilled oversized by(a) 3/16 (b) 1/32 (c) 1/64 (d) 3/64
491. 7 X 19 size of cable indicates(a) 7 wires of 19 strand (b) 7 strand of 13 wire (c) 7 strand of 19 wires (d) none
492. Clevis bolt used in fork end of cable fitting(a) AN – CRS bolts (b) NAS – CRS bolts (c) – (d) –
493. Intergranular corrosion is normally caused by(a) internal stresses (b) improper heat treatment (c) electrolyte (d) all of the above
494. Spilled electrolyte of lead – acid battery is neutralized by(a) ammonia (b) baking soda (c) vinegar (d) both a & b
495. What type of battery charger is recommended for final charging of a Ni – cad battery(a) constant current charger (b) constant voltage charger (c) both a & b (d) any one of the above
496. Corrosion product in magnesium is removed by
(a) steel wire brush (b) carborundum abrasive (c) stiff hog bristle brush (d) all of the above
497. Purpose of heat treatment of titanium is(a) thermal hardening to improve strength (b) annealing for subsequent working(c) relieve stresses (d) all of the above
498. The process capacity of a computer is determined by(a) MHZ (b) KHZ (c) RAM (d) frequency
499. Hardness testing method of steel is(a) brinell or barcol (b) bracol or Rockwell (c) brinell or Rockwell (d) none of these
500. T6 indicates(a) artificially aged only (b) SHT and cold worked(c) SHT and their artificially aged (d) Solution heat treated
501. Mental fatigue of human is caused by(a) long period of duty (b) emotional stress (c) noise (d) all of the above
502. A micro switch will open or close a circuit with the movement of(a) 1/16 or less (b) 1/16 or more (c) both (d) none
503. Range of ammeter is extended by connecting a resistor with moving coil in(a) parallel (b) series (c) any one of the above (d) none
504. Capacitance of a capacitor is directly proportional to(a) plate area and distance is directly proportional to(b) plate area and inversely proportional to distance between the plates(c) distance between the plates and inversely proportional to plate area (d) both a & b
505. Calculate the power when E = 28volts and R = 10(a) 78.4 watts (b) 7.84 watts (c) 2.8 watts (d) 280 watts
506. If Z is impedance, r is internal resistance and R is external resistance, then(a) Z = R + r (b) Z2 = R2 + r2 (c) Z = R2 + r2 (d) none
507. Unit of radioactivity is(a) Rutherford scane (b) Bequirel (c) Both a & b (d) None
508. Mark the correct statement(a) straight fluted, reamer prevents chattering (b) spiral fluted reamer is tapered to acid in starting(c) bottoming reamer is tapered to aid in staring (d) none of the above
509. (110)2 is the binary of decimal(a) 3 (b) 5 (c) 6 (d) 7
510. Instrument panels are usually shock mounted to absoro ------ shock(a) low frequency, high amplitude (b) high frequency, high amplitude(c) low frequency, low amplitude (d) high frequency, low amplitude
511. Piston engine is depends on
(a) charle’s law (b) brayton cycle (c) boyle’s law (d) both a & c
512. End of steel bar sometimes painted in various colors and color combination as a mean of identifying different grade of steel(a) solid colors identify the alloy and strips identify the carbon contents(b) strips identify the alloy and solid colors identify the carbon content(c) both a & b (d) none of the above
513. Which gage is used to measure the backlash between gears(a) filler gage (b) screw pitch gage (c) fillet gage (d) DTI
514. Accuracy of a finished screw thread is determined by(a) screw pitch gauge (b) ring thread gauge (c) thread gauge (d) plug thread gauge
515. Highest size of drill is(a) No. 80(0.0135) (b) 3/16 (0.1875) (c) 3.75 mm (0.1475) (d) E (0.2500)
516. Schematic diagrams are used mainly for(a) a/c maintenance and repair (b) trouble shooting (c) installation of parts (d) all of the above
517. Mark the correct statement(a) turboprop engine requires lengthy runway than piston engine of same power(b) turbojet has more weight than piston engine of same power(c) turbofan required short runway as compare to turbojet (d) all of the above
518. In towing the a/c (light) mark the correct statement(a) all tail wheel a/c towing towards backward (b) all nose wheel a/c towing towards backward(c) if steerable nose wheel a/c, locking scissors are set to full swivel position(d) none of the above
519. While starting the piston engine, which type of fire extinguisher is permitted(a) water and water based agent (b) Co2 + 516 capacity(c) Dry chemical (d) CC14 (halon gas)
520. Which core material gives deflection in composite(a) honey comb (b) synthetic resin (c) foam (d) all
521. Paraketone used on(a) cable (b) iron (c) conduit (d) none
522. Interpretation analysis of defeat in PFD indicates(a) extent of staining (b) – (c) – (d) –
523. In PFD, when used fluorescent, material color of defective part and sound part is(a) brilliant yellow – green and blue violet (b) brilliant yellow – green and bright red(c) bright red and blue violet (d) none of the above
524. ATA – 100 code of hydraulic power, pneumatic, fire and engine oil is(a) 36,26,79,83 (b) 29,36,26,78 (c) 29,36,26,79 (d) 79,36,29,26
525. ATA – 37 indicates
(a) vacuum / pressure (b) water / waste (c) pneumatic (d) none of the above
526. Needle bearing is used where movement is(a) oscillatory rather than rotary (b) rotary rather than oscillatory(c) both a & b (d) none of the above
527. Embrittlement in steel is reduced by(a) heating the steel at 1500 – 2000C (tempering) (b) increasing the carbon percentage(c) by annealing (d) none
528. Pressure of gas on acetylene welding is depend upon(a) area of welding surface (b) type of material being welded(c) as the welder will want (d) none
529. Mark the correct statement regarding monel(a) it can not hardened by heat treatment (b) it can be hardened by heat treatment(c) either a & b (d) none of the above
530. Mark the incorrect statement
(a) ultrasonic inspection _______________ piezo electric effect (radiography)(b) MPI ___________ skin effect (ultrasonic)(c) Eddy current ____________ current acceptance(d) PED ___________ capillary action
531. If no marking of drill, identification of drill can be measured by drill gauge having(a) fraction on right and no on left (b) fraction on left and no on right(c) both a & b (d) none of the above
532. Dia of rivet is(a) 2 times of thickness of sheets (b) 3 times of thickness of thickest sheet(c) 3 times of thickness of joint sheets (d) equal to grip length
533. Extension tap is used for(a) cut full threads in blind hole to bottom (b) cut the thread in deep hole(c) thread cuts on long shaft (d) all of the above
534. Lift and drag depends upon(a) more cambered area of upper side and less of lower side of wing(b) more cambered area of lower side and less on upper side(c) both a& b (d) all of the above
535. Gear rack is used for(a) change rotary motion to reciprocating motion (b) change reciprocating motion to rotary motion(c) transmit motion to parallel with it (d) none of the above
536. Indication of Class – B fire is(a) Red (b) Yellow (c) Green (d) Brown
537. Color of extruded bar of aluminum alloy in 5 inches is(a) red marking near the end of each length (b) blue marking near the end of each length(c) stamp of blue and white color (d) none of the above
538. What size of the hole should be bored before cutting a 2.5” internal acme thread having 3 thread per inch(a) 2.5” (b) 2.1667” (c) 3.5” (d) 2.75”
539. Mark the correct statement(a) light a/c is tied down after every flight (b) light a/c is not required tied down(c) only when strong air being to flow then tie down (d) both a & c
540. Dis – integrator is used to(a) making hole in conductive metal (b) making hole in non – conductive job(c) making hole clearly and fairly (d) both a & c are correct
541. Fuse large station is(a) The distance to a given prist is required in inches 11 to centre live extendil through(b) the A/C from the nose through the centre of the tail cone
542. MTCS in (Light emitting diode)(a) It emits more light with increase in (b) The crpstal emits lights with increase in (c) light remains cons tut with increase in
543. Repair of crack by welding(a) Bolt welding (b) (c) (d)
544. Seam welding is a continuous spot welding (a) in which copper is used (b) (c) (d)
545. Aluminum welding(a) Neutral flame slightly carbolic (b) (c) (d)
546. Ultra sonic solder component(a) Aluminum is used (b) (c) (d)
547. Flex is used for(a) cleaning (b) (c) (d)
548. Temperature of silver soldering(a) 505 to 850 (b) (c) (d)
549. Aviation snip having yellow handle(a) Straight handle cut (b) (c) (d)
550. For finding the centre of circular object (a) combination set is used (b) Contra square used
551. Speed of Hack Saw(a) 50 to 60 stroke / minute (b) (c) (d)
552. Peening is(a) clogging of particular file teeth (b) (c) (d)
553. The bottom surface joint the flank(a) Rool (b) (c) (d)
554. Circulation is 40 teeth x 60 rpm = 20 teeth x RPM = 40 x 60 = 120 RPM
20
555. Screw drivers must fill at least(a) 75% of screw slot (b) (c) (d)
556. A hole i.e. to be removed to exact size must be drilled(a) 0.003 to 0.007” under size (b) (c) (d)
557. Matrix micro meter pitch screw(a) 0.5 mm (b) (c) (d)
558. Least count of vermier calliper(a) Smallest division in main scale divide by no. of _ _ _ _ _ _ _ by venire scale
559. Head less screw turned with (grob screw)(a) Allen key (b) (c) (d)
560. Identification marking of Nut is(a) The marking of mating part (b) (c) (d)
561. Marking on swaged terminal by (a) Rolling method, chemical etching (b) (c) (d)
562. Marking on part subjected to stress(a) electrical etching (b) chemical etching (c) engraving
563. Self plugging Rivet(a) Replacement of hollow rivet one size larger
564. A/C skin damage by sand or water jet(a) At high speed formation of crack filli form corrosion
565. Corrosion cleaning from Magnesium(a) 10% of cromic acid of 0.1% H2So4
566. Brake water test oil, qrese, detection
567. A/C interior cleaning by(a) Vacuum cleaner (b) (c) (d)
568. Channels, Angle, T – section are formed by(a) Extruding process (Extruding) (b) (c) (d)
569. Temperature of furnace measured by(a) pyrometer (b) (c) (d)
570. Brinell measured(a) Dia meter of impression (b) (c) (d)
571. Rock well measured
(a) Depth of penetration (b) (c) (d)
572. If volume of confined vassal is doubled(a) then pressure will ½ (b) (c) (d)
573. Boiling point is α to(a) Atmospheric pressure (b) (c) (d)
574. If length of Heater Wire Reduce then(a) Wattape increases (Power) (b) (c) (d)
575. If there are n no. of cells each having voltage of Є then total voltage is(a) Є (b) (c) (d)
576. Vicious cycling associated with(a) Battery (b) (c) (d)
577. Current limiter stand a considerable(a) Over load (b) (c) (d)
578. A piece of crystal vibrates at(a) one Natural frequency (b) (c) (d)
579. Continuity test is done by(a) Ohm meter / megger (b) (c) (d)
580. Full wave D. C. used (a) 2 or 4 Diode (b) (c) (d)
581. Alternate frequency is (a) 4 hole, 1800 R.P.M. (b) (c) (d)
582. Machine language (a) low level language (b) (c) (d)
583. In 4 stroke engine spark once in(a) 2 Revolution of crank shaft (b) (c) (d)
584. Stud part used with Non ferrous(a) Cadmium plated (b) (c) (d)
585. Electric spark (a) Salphuric Acid (b) Nitric acid (c) Ozone (d)
586. Kevlar Structural qrade(a) Kevlar 49 (b) (c) (d)
587. Four basic forces act on flight (a) Lift, drag, thrust, weight (b) (c) (d)
588. Aviation snip used for heat treat(a) Al. alloy & stainless steel (b) (c) (d)
589. Back lash in micrometer is(a) Manufacture of defect (b) Due to wear & tear(c) Due to slippage in Nut & stud (d)
590. Simple logic circuit(a) one I/P & one O/P (b) (c) (d)
591. Drilling(a) Harder material first (b) (c) (d)
592. Radio graphy not detect(a) porosing (b) Defect detect to beam (c) Defect normal to beam (d)
593. A/C tied down in its wind(a) Elevater is in full up position (b) (c) (d)
594. MTCS(a) Lift is α to wing area (b) (c) (d)
595. Drawing is (a) Auxiliary view (b) (c) (d)
596. 100 LL low lead(a) died blue (b) (c) (d)
597. Tube bending by hand(a) Fusible alloy or sand is used (b) (c) (d)
598. Gyro free in 3 - axis (a) Space or free gyro (b) (c) (d)
599. Tide Gyro(a) free in 3 – axis & control by external mean (b)(c) (d)
600. Static flat plate located at position (a) To reduce position error (b) (c) (d)
601. MTCS(a) Aluminum oxide porous & iron oxide unbroken (b)(c) (d)
602. Anti static addition for(a) lowering the freezing point of water in fuel (b)(c) (d)
603. Analog computer is less accurate(a) than digital computer (b) (c) (d)
604. Aviation strips or Dutch man snip(a) yellow handle cut straight strip (b) green handle cut right hand strip(c) red handle cut left hand strip (d)
605. Grub screw are locked by(a) peering (b) (c) (d)
606. Threaded metal fasteners locked using liquid sealant(a) loctite (b) (c) (d)
607. Crinkle washer used in(a) Electrical installations (b) small instruments (c) (d)
608. Turnbuckle has(a) Brass (b) One end has LH threads and other R. H. thread(c) Not more than 3 threads should be exposed (d)
609. High speed bearing lubricating by(a) oil (b) (c) (d)
610. Low speed bearing lubricating by (a) grease (b) (c) (d)
SET 12 (JUNE – 2002) 611. In 7075 0 indicates
(a) Annealed (b) (c) (d)
612. One r is dash on bolt head indicates(a) CRS bolt (b) (c) (d)
613. The line used for reference of part is (a) Phantom line (b) (c) (d)
614. The color of 6053 Al – alloy is (a) (b) black (c) (d)
615. Lock bolt, which indicates flat head is (a) ALSF (b) (c) (d)
616. In flexible hoses slack is given(a) 5 of 8% of total length (b) (c) (d)
617. When tightening of nut is highest strength (a) (b) (c) 2024 - T (d)
618. Al –alloy is not heat treated properly to have uniform grain boundaries it has(a) (b) (c) Intergranular corrosion (d)
619. Which one is unpaired(a) Battery - accumulator (b) Diode - NRV (c) Ac generator – vortex generator (d) ENF - MMF
620. Which is used to transfer rivet size from template to new sheet is(a) (b) (c) (d) Transfer punch
621. Aside clearance between piston ring and cylinder wall is measured by
(a) (b) Thickness (DOUBT) (c) (d)
622. When base circuit is open at R then(a) (b) Bulb can be turn off (c) (d)
623. The resistance of conductor depends on(a) Temperature (b) Length and material (c) Cross – section area (d)
624. In on inductive circuit (DOUBT)(a) Current lags behind voltage by 900 (b) (c) (d)
625. In magnetic particles inspection, Nickel plating does not given indication of(a) (b) Discontinuities (c) (d)
626. In dye pnentrate inspection the defects under while light appears(a) (b) (c) Red (d)
627. Which is unpaired(a) (b) Ultrasonic test – peizo electricity (c) (d)
628. Dye penetrant inspection is applicable to(a) Ferrous Alloys only (b) Plastic and non metal (c) Non furious alloys metal
629. In ultrasonic test, when mechanical stress vibration is applied to crystal quartz then these are(a) (b) (c) As in (a) and caries with the thickness of crystal (DOUBT)
630. Forms of corrosion which occurs between metal and non metal is(a) (b) Crevice corrosion (c) (d)
631. Normalizing is applicable to (a) (b) (c) Ferrous alloy only
632. Main content of 5056 Al – alloy is(a) (b) Mg (c) (d)
633. Treating the parts in anhydrous ammonia is(a) (b) Nitriding (c) (d)
634. For maximum elongation ductility tensile strength and impact resistance Mg – alloy is(a) Solution heat treatment (b) (c) (d)
635. Which one is not primary cell(a) (b) Lead acid cell (c) (d)
636. Ni – cd battery is charged with(a) (b) Constant voltage varying current (c) (d)
637. An ac circuit consists of inductance of 10 capacitance 4 & resistance 8 the impedance of the circuit isZ = R2 + (XL – XC)2
(a) (b) 10 (c) (d)
638. Glider has lift due to(a) High aspect ratio (s/c) (b) (c) (d)
639. I flight extending flaps(a) (b) (c) (d) Reduce stalling speed
640. Which has increasing order of strength(a) (b) (c) 2S, 17ST, 24ST (d)
641. Composite has(a) Resistance to wear (b) High strength to weight ratio (c) Resistance to corrosion (d) All
642. The static vents with the flat surface plate at two position to(a) (b) (c) Both (a) & (b) (DOUBT) (d)
643. Heat treated defect in metal is detected by(a) (b) Eddy current testing (c) (d)
644. An ac circuit has inductance 3 and resistance of 4, then impedance of the circuit is(a) (b) (c) 5 (d)
645. The maximum radius for bending of Al –alloy should be(a) 3 times the sheet thickness (DOUBT) (b) (c) (d)
646. The truth table is for(a) (b) (c) XOR gate (d)
647. Beryllium copper has greater advantage of(a) (b) High strength and uniform properties (c) (d)
648. Mg is ____________(a) Susceptible to corrosion (b) Has tendency to crack (d) Both a & b
649. For most metals, which oxy – acetylene flame is used(a) Neutral flame (b) (c) (d)
650. Which one is heat treatable alloy(a) (b) (c) (d) Any Al – cu alloy
651. Rack is mesh with a gear, it is used to change (the purpose of rack and pinion is to change)(a) Rotary motion to reciprocating motion (b) (c) (d)
652. Lift depends upon(a) Velocity of relative wind (b) Density of air (c) Wing span (area) (d) All
653. Metal matrix composite is a recent conception material in which(a) (b) (c) Fibers are reinforced with metal during molten stage
654. In SAE – 1030, carbon percentage is(a) 30% (b) (c) (d)
655. To roll a pure Al – sheet over Al – alloy is called(a) Al - clad (b) Pure - clad (c) (d) Both a & b
656. Magnetic particle inspection (MPI) can be done when flow is
(a) At or near the surface (b) (c) (d)
657. CD – plating is done on steel parts (DOUBT)(a) To prevent corrosion (b) On or in depth of surface(c) Near or in depth of surface (d) All
658. Heated – treated and non – het treated metal 25, distinguished by(a) (b) Eddy current test (c) (d)
659. Titanium is heat treated by(a) (b) Full annealing (c) (d)
660. Maximum bending in case of copper tubing is (DOUBT)(a) Three times to internal diameter (b) (c) (d)
661. Picking of steel is carried out in(a) H2SO4 (b) (c) (d)
662. Peizo electric effect is(a) If mechanical stresses applied to a quartz crystal, then voltage is induced(b) Frequency depends on the thickness (c) Both a & b
663. Electroplating provides(a) Corrosion resistance surface (b) Wear resistant surface (c) Both a & b
664. Re – heating is done to(a) (b) (c) Remove hardness and brittleness
665. In cable strand, the wires are performed to provide(a) Corrosion resistant (b) Flexibility (c) (d) Both a & b
666. The piston engine work on(a) Boyle’s law (b) (c) Charle’s law & otto cycle (d) Both a & c
667. The mechanical efficiency of piston engine is determined by(a) (b) (c) Mean effective pressure (d)
668. The main alloying elements 7075 Al – alloy is(a) (b) (c) Zn (d)
669. The tubes are sized by (metal)(a) (b) (c) Out side diameter in increment of 1/16” (d)
670. Flared tube fitting used is a/c are made of(a) Al – alloy (b) Cu (c) Steel (d) All are correct
671. Muntz metal consists of(a) 60% of Cu and 40% of Zn (b) (c) As in (a) and basically brass (d)
672. Steel has fine grain stricture, when(a) when heated above the critical temperature (b)(c) (d)
673. The soldering of Al – alloy differs from other metals due to(a) (b) Greater heat input (c) (d)
674. Kirchhoff’s law is applicable is(a) (b) (c) (d) Ac & Dc
675. In modulation, the available band is(a) (b) (c) (d) Many band
676. The modulation in which, amplitude is kept constant and frequency is changed is called(a) (b) (c) Frequency modulation (d)
677. The angle of attack is the (a)(b) Horizontal acute angle between the chord of the wing and wind direction from which it touched the aircraft(c) (d)
678. In NDT of material by Dye penetrant inspection (DPI) the volume of defect is interpreted by(a) (b) (c) Staining extent (d)
679. In UST, scanning is carried out by moving both probed simultaneously is opposite direction for(a) Flash butt joint (weld) (b) (c) (d)
680. During fuelling, the most necessary precaution to be observed(a)(b) Grounding connection first made to fuelling vehicle and then the aircraft(c) (d)
681. The fluid use for all types aircraft engine except rocket is(a) (b) Air (c) (d)
682. In composites, the strength is provided by (DOUBT)(a) (b) (c) (d) (a) and fiber
683. In hardness testing of composite the hardness is measured(a) Resin (b) (c) (d)
684. In composites, repair, the part steeped rather than to be scrafed for(a) Uniform shear stress (b) (c) Smoothness (d)
685. After honeycomb repair, the moisture entrapment is inspected by(a) Radiography (b) Ammeter (c) Laser holography (d) All
686. In uniform fluid flow, the fluid is made to flow through a tube and the pressure exerted by the fluid is measured by(a) Dynamic pressure (b) (c) (d)
687. PARKETON is used for protection of(a) Steel (b) (c) (d) As in (a) and cable
688. The rust and corrosion is removed from highly stressed steel parts by(a) (b) Fine buffing cloth on buffing wheel (c) (d)
689. Centre drill is used to produce(a) Short hole and CSK hole (countersunk) (b) (c) (d)
690. During repair procedure of composite part treatment is done for(a) (b) Restore surface protection (c) (d)
691. Synthetic rubber used in the aircraft is designed GRM as(a) (b)(c) (d) Government rubber mono – vinyl acetylene or neoprene
692. The neutralize the surface of Ni – cad battery compartment(a) Boric acid or ammonia (b) (c) (d)
693. Close tolerance bolt is identified by(a) (b) Crossed triangle marking on head (c) (d)
694. While jacking the approved procedure is(a) Both wheels are raised together (b) (c) (d)
695. The class of fit required for a right drive fit is or close drive.(a) (b) (c) (d) Class – 4
696. Piston engine’s mechanical efficiency differs due to(a) (b) (c) (d) Difference of grade of fuel used
697. A device which gives lateral control and is mounted at the opposite surface of wing(a) spoiler (b) (c) (d)
698. The pressure of water can be detected by (water inside honeycomb corecell)(a) (b) (c) (d) Radiography
699. Aircraft bolts are generally manufactured with a(a) (b) (c) (d)
SET 34 (OCT – 2001) 700. fitting consists of following parts
(a) body, sleeve, flared tube and nut (b) body, sleeve and nut(c) sleeve, nut and end terminals (d) sleeve, shoulder, beaded tube, and nut
701. Color of fire extinguisher fluid line is(a) yellow (b) brown or yellow (c) red (d) maroon or red
702. If two end terminals of PN junction is connected through a conducting wire than(a) a steady current flows from P – type to n – type material(b) no steady current flows from wire(c) steady current flows from n – type material to p – type material through wire(d) any one of the above
703. A prime limitation with directly heated cathode is due to(a) low frequency (b) voltage fluctuation (c) high frequency (d) phase
704. Bottle jack is used for(a) removing a wheel or complete single wheel assembly form one landing gear(b) only removing brake unit (c) only removing single unit (d) all of the above
705. During jacking the a/c outside the hanger(a) face the a/c tail to wing (b) can be jacked in any direction(c) surface should be hard and level (d) none
706. Mark the correct statement(a) straight flute reamer has a tendency to reduce chatter(b) buttoning reamer is tapped at bottom for starting aid (c) spiral flute reamer is tapped at bottom for aid in starting (d) none
707. In a PNP transistor application, a solid state device is turned on when the(a) base is negative w.r.t. the emitter (b) base is positive w.r.t. the emitter(c) emitter is negative w.r.t. base (d) any of the above
708. Where is an AN – clevis bolt used in an airplane(a) for tension and shear load conditions (b) where external tension load are applied(c) only for shear load application (d) only for taking radial loads
709. To detect a minute crack using dye penetrant inspection usually requires(a) That a developer is applied to flat surface (b) A longer than normal penetrating time(c) The surface to be highly polished (d) Do not require excessive surface preparation
710. CPCP refers to(a) control processing of computer programme (b) corrosion prevention and control programme(c) corrosion prevention and caused detection programme (d) corroded parts corrugation programme
711. Mark the correct statement(a) ATA – code 30 indicates, light (b) ATA – 61 code indicates propeller(c) ATA – 29 indicates power plant (d) All are correct
712. When capacitive reactance becomes equal to inductive reactance of a circuit it is called (a) phase - in (b) phase – out (c) resonant (d) impedance matching
713. DPI in reference to NDT means(a) Ultrasonic flow detection (b) Dye penetrant inspection(c) Anodic detection inspection (d) Eddy current testing
714. When a lead – acid battery is charged by constant current method, then its full charge can be detected as(a) Three testing of electricity gives same specific gravity value (b) Voltage stops rising(c) Gassing will occurs rapidly (d) All above are wrong
715. What should be the first step of the procedure in sketching an a/c wing skin repair(a) draw heavy guideness (b) may out the repairs (c) block in the views (d) draw extension lines
716. A cathode (election emitter) used in thermionic emission must have following characteristics(a) high matching point (b) high matching strength (c) low work function (d) all above are correct
717. When bolts and rivets are used to joint the metal sheets, then both should be protected from corrosion by (a) applying grease on both (b) by plating bolt and rivets (c) by painting bolt and rivets (d) they must be placed separately approximately, 2 – times than the thickness of the metal being joined
718. Denting in metal tube is acceptable if(a) not more than 10% of tune diameter (b) less than 20% of tube dia(c) not more than 40% of tube dia (d) must be rejected if dent occurs
719. Primary control surfaces are(a) elevator rudder, aileron and leading edge flap (b) elevator, rudder, aileron and trailing edge flap(c) elevator, slots, spoiler and flaps (d) elevator, rudder and aileron
720. Crazing in plastics occurs due to(a) manganese (b) phosphorus (c) silicon (d) sulphur
721. Mark the correct statement(a) single needle pointed end scriber should be sharp and surface should be checked for flatness with straight edge(b) single needle pointed end scriber should be sharp(c) 900 bend, scribe should not be sued as far as possible (d) all of the above
722. If a line is divided into 25 division so that 25 divisions of this line is equal to 24 division of another line so that minimum distance that can be measured is equal to difference between the value of each division, it is the principle of(a) DTI (b) Micrometer (c) Venire scale (d) Rules
723. Magnesium surface should be cleaned with(a) stiff – hog bristle (b) steel wool (c) crocus cloth (d) steel wire brush
724. Which of the following frequency is sued space propagation(a) 2 KHZ (b) 20 MHZ and above (c) up to 30 MHZ (d) 200 KHZ - 250 MHZ
725. Fusible metals are used for tube bending has(a) low melting point and ductile (b) hard and high melting point(c) should expand on solidifying (d) both a & b are correct
726. For very accurate readings during such calibrations the thimble may be viewed under a microscope of(a) low magnification (b) medium magnification (c) high magnification
727. When hydraulic fluid lines and electrical line is passing through same portion of a/c. then(a) Hoses should be fitted above the wires and should be secured to a/c structure(b) Electrical wire should be fitted above and to secure to a/c structure(c) A minimum of 4 – distance should be maintained between two and any of two can be unstable above(d) Either of wire can be installed above and a minimum of
728. In straight and level flight(a) lift = drag and thrust = weight (b) lift = thrust and drag = weight(c) lift = weight and drag = thrust (d) none of the above
729. Black smith anvil is made by(a) machining (b) forging (c) extrusion (d) both a & b
730. Crevice corrosion caused due to(a) metal and non – metal comes in contact and oil is present between them(b) contact between metal and non metal(c) plastic and metal contact (d) due to improper heat treatment
731. Modern computer consists of(a) hard - ware (b) soft ware (c) CPU, Input/Output (d) ROM, software and logic gates
732. Fretting corrosion occurs due to(a) Stationary parts are subjected to relative motion to each other(b) Direct contact with caustic liquid and battery fumes(c) Improper heat treatment (d) Combination of tensile stress and corrosive environment
733. Amount of Electricity that can be stored on capacitor is proportional to Electrolyte
(a) both plate area and distance between them(b) plate area and does not depend upon distance between them(c) plate area and inversely proportional to distance(d) distance between plates and inversely proportional to area
734. Resistance for a straight conductor does not depends upon(a) length (b) shape of cross section (c) temperature (d) material
735. Working voltage of capacitor should be(a) at least 20% higher than applied (b) al least 50% higher than applied(c) equal to applied voltage (d) less than 50% than applied voltage
736. Mark the correct statement(a) Philips screw driver has sharp end (b) Reed and prince screw driver has blunt end(c) Reed and prince screw has larger area in center (d) Both are interchangeable
737. For high speed a/c, it has wing(a) thicker than low speed a/c (b) thinner than low speed a/c and thick wing tip(c) equal to low speed a/c (d) any of the above
738. Digital system of computer is working on(a) decimal (b) binary (c) hexagonal (d) octagonal
739. Close tolerance bolts(a) can be used in machined parts (b) corrosion resistance area(c) tight fit is permissible (d) both a & b
740. Mark the correct statement(a) Prick punch is used to mark center mark for drilling purpose(b) Center punch is used for removing binded rivets, bolts (c) Prick punch is used for making reference marks on sheet metal (d) All are correct
741. If the thimble scale zero mark is above the zero mark of barrel mark in micrometer, it indicates(a) positive error (b) negative error (c) zero error (d) none
742. Mark the correct statement(a) turbo jet engine require shorter runway length than turbofan engine(b) turbo fan engines require lesser runway length for take off than turbo jet engine(c) turbo jet engine produces more thrust than turbo fan (d) both b & c are correct
743. After welding of butt joint(a) heat treatment is required as cold working to be done(b) heat treatment is not necessary as no cold working is to be performed(c) with torch heat, heating the welded area only slightly (d) it is not necessary
744. Mark the correct statement in respect to fuelling(a) a/c can be grounded with carbon cabin(b) refueling van can be grounded with metal chain discharge behind the van(c) both a/c and van are kept at equal potential with a wire (d) all of the above
745. How many terminals can be taken out from stud(a) one terminal per stud (b) two terminal per stud(c) four terminal per stud (d) any no. of terminals can be taken out from one stud
746. While defueling the sweep back wing a/c(a) outboard wing fuel tanks should be emptied first (b) inboard wing fuel tanks should be emptied first (c) empennage fuel tanks should be emptied first (d) any one of the above
747. Mark the correct statement(a) brinell hardness tester measure depth of penetration and reading is directly indicated on dial(b) barcol is sued for testing steel (c) Rockwell tester measure dia of penetration (d) None of the above
748. Depth of screw thread is(a) distance between root and creast measured (b) distance between creast of one thread and creast of adjacent thread(c) equal to line joining creast and root (d) none of the above
749. The ability to detect minute crack with radio graphy is called(a) radio graph resolution (b) radio graph sensitivity (c) radio graph processing(d) radiography density (e) all
750. In plastics, minute crack occurring at weaker area due, to applied load and extends both sides(a) crazing (b) creeping (c) fatiguing (d) crevice corrosion
751. Turn buckle consists of(a) brass barrel with left and right hand thread(b) stainless barrel with either left hand or right hand thread (c) only cadmium plated steel barrel and end fitting (d) none of the above
752. In selecting rivets(a) no type, and size depends on shear stress(b) as in (a) and tensile strength and does not depends on bearing strength (c) rivet dia should be twice the thickness of metal being joined (d) none of the above
753. If 1 cm of main scale is divided in 20 equal division 24 division of main scale is divided in 25 equal division of vernier scale, least count is(a) 0.0002 cm (b) 0.002 cm (c) 0.2 cm (d) 2.0 cm
754. Backlash in the gear can be measured by(a) D.T.I. (b) Micro meter (c) Thread gauge (filler gauge) (d) Telescoping gauge
755. Nomex and Kevlar are used for making composites as(a) they are used interchangeably (b) both have some molecular size(c) both have same internal structure (d) both have same strength
756. Ballst is used for(a) bringing the c.g. within c.g. ppoints (b) leveling the lateral arm on central point(c) both a & b (d) none
757. Leveling of a/c(a) lateral leveling of H/A is more critical than L/A(b) jacking points are located on longitudinal axis (c) leveling is always done on longitudinal axis(d) leveling of lateral point is always done on longitudinal axis
758. Annealing is done on heat treatable parts to (a) relief internal stresses set up during cold working (b) as in (a) and harden the metal(c) as in (a) and soften the metal (d) none of the above
759. Surface plate is checked for accuracy by(a) thickness gauge (b) surface gauge (c) DTI (d) None
760. A micro switch will close or open a circuit with the movement of(a) 1/16” or more (b) 1/16” or less (c) both a & b (d) none
761. Capacitance of a capacitor is directly proportional to(a) plate area and distance between plates(b) plate area and inversely proportional to distance between plates (c) distance between plates and inversely proportional to plate area (d) none
762. The dynamic pre at the tip of A/C nose(a) max (b) min (c) zero (d) greater than static pitot pressure
763. Drag independent of lift(a) Parasite drag (b) induced drag (c) Turbo tank drag (d) wave drag
764. Angle of incidence is given by(a) Relation of chord line & direction of relative wind (b) (c) (d)
765. Elevator is used for(a) Stabilize the lateral axis (b) (c) (d)
766. Voltage of a capacitor is 100 C & 1F find the voltage(a) =c = 10 (b) (c) (d)
767. Unit of power or energy(a) watt & joule (b) (c) (d)
768. When length & no. of turns doubled inductance is(a) Doubled (b) guadrapled (c) un affected (d) halfed
769. Shunt compound motor is used in(a) Landing gear (b) Hydraulic pump (c) gyro & servo motor (d) wing flaps
770. Capacitance of capacitor depends upon(a) Thickness (b) Plate area (c) Di electric constant (d) Separation of particle
771. The secondary of T/F depends upon(a) No. of turns (b) flux linkage (c) Flux no. of turns
772. The em. f produced in a capacitor depends upon(a) Rate of charge flux linkage (b) No. of turns (c) flux linkage
773. Two batteries A is big & B is small are in same potential, the internal resistance of A(a) A less (b) less than (c) un effected (d) equal
774. 7 x 19 indicates(a) 7 strand & 19 wires (b) (c) (d)
775. The resistance of conductor does not depends(a) Shape of cross - section (b) (c) (d)
776. When resistance is 4, if we double the resistance will be (a) 8 (b) 2 (c) 16
777. In electrolyte battery, if electrolyte (pbor) is spilled out, then cleaned(a) Bicarbonate of soda & water (b) (c) (d)
778. P.N. junction not used in-(a) Rectifier (b) Detection of light (c) For A.C.
779. Reck wel Hardness test measures (a) Depth of penetration (b) (c) (d)
780. When time between soaking & quenching increases(a) Re – precipitation takes place (b) (c) (d)
781. Light A/C tied down(a) after every flight (b) (c) (d)
782. if size of drill does not marked(a) frond by drill gage, no right, fraction left (b) (c) (d)
783. Barcol tester measures(a) Al alloy & copper (b) (c) (d)
784. Which of the following precession tool is used for fighter the Nut or bolt with proper torque (a) Torque wrench (b) (c) (d)
785. Inter granular corrosion caused by(a) improper heat treatment (b) (c) (d)
786. End of steel bar some times painted some times various colors & color identify if differ at grade of steel(a) Solid color identify the alloy & strips identify the (b) (c) (d)
787. Schematic diagram are mainly used for(a) Trouble shooting (b) (c) (d)
788. Al. alloy which flames are used(a) Neutral (b) oxidizing (c) (d)
789. Kirchhoff’s law applicable to(a) Both AC & DC (b) (c) (d)
790. The rust of corrosion is removed from highly stressed steel(a) fine buffeling cloth or buffeling wheel (b) wire brush (c) abrasion
791. Which one is without doubt wrought alloy(a) Al clad (b) piston (c) crank alloy
792. Universal building block gate(a) NAND gate (b) (c) (d)
793. The dimensional inspection of bearing in rocker arm can be accompanied by(a) Tele scoping gage & micro meter (b)(c) (d)
794. Bevel gear is used to(a) Transmit motion at an angle (b) (c) (d)
795. While changing one wheel(a) Remained wheel should be choked (b)(c) (d)
796. Annealing metal is(a) Soft (b) Ductile (c) Relieve internal stress (d) All
797. The color mainly fuel lines are (a) Red / Maroon (b) (c) (d)
798. A generator having 8 – pole runs at 6000 rpm find the freq.(a) 400 C/S (b) (c) (d)
799. Brazing welding
(a) Also called bronzed welding (b) It is used to solder metal have greater strength(c) (d)
800. Main memory of computer(a) ROM (CPU) (b) RAM (c) (d)
801. Identify the figure(a) Half round file (b) (c) (d)
802. Identify the figure(a) Spline & shaft (b) Gear & pinion (c) roller bearing
803. Identify the figure(a) Single pole double throw (b) Double pole double throw (c)
804. In case of Jet fuel(a) The water sediments in upper or lower portion of fuel (b) Micro biological growth seen in hydrocarbon(c) Water content appear as smoky (d) Both a & b
805. Internal & external threads made(a) Taps & die (b) Lathe M/C (c) both a & b
806. An A.C. motor is used more because (a) Does not have brush & commutator (b)(c) (d)
807. Buckling bar not in proportion (In case of Rivet)(a) improper upset (b) (c) (d)
808. Brake fluid should have(a) High flash print (b) Low B. P. (c) High freezing point (d) All
809. Commercial annealing cooling is done of(a) Air (b) Water (c) Mica
810. Which of the following has –ve co efficient of resistance (a) Thermistor (b) Semi conductor (c) Transistor (d) Resistor
811. Pulley are used to drive motor(a) Cross band strip to higher speed (b) Single band strip to higher speed(c) Both single & cross band used for high speed
812. Fatige crack is detected by(a) Ultra sonic (b) Radio graphy (c) Eddy current (d) All
813. To prevent solder from rum of away from the surface to be joined(a) Clef is commonly used to surround the area to be joined (b) (c) (d)
814. Meashing gear have same(a) Pitch no. of same teeth (b) Teeth (c) Dendum (d) All
815. If copper bar is used in AC motor to improve
(a) Power factor (b) Cu. Losses decreases (c) efficiency (d) Torque
816. Proof load up of cable(a) British 50% of min. strength (b) USA 60% of min. strength
817. Bearing clearance taken by(a) DTI (Dial Test indicator) (b) (c) (d)
818. Or gate works as a(a) Parallel circuit (b) (c) (d)
819. AND gate works as(a) Series circuit (b) (c) (d)
SET 35 (OCT – 2002) 820. Ohm’s Law does not hold for
(a) Diode (b) mercury (c) P-N emulsion (d) Both a & c
821. Speed of motor increases, when load decreases current decreases because of(a) frictional loss b/w motor moving parts (b) frictional loss b/w field winding and other parts(c) included back emf increases (d) none
822. During inspection after swaging if it is found that(a) shank dia is too large that means it is over swaged(b) shank dia is too small that means it is over swaged it should be rejected(c) shank dia too small it means under swaged(d) shank dia is too large it means under swaged and it should be rejected
823. Flap tab is(a) balance tab (b) trim tab (c) servo tab (d) none
824. Geiger counter is used(a) to check the condition of a/c after heave landing(b) to check the condition of a/c after flight through turbulence(c) to check penetration of a/c by ultraviolet rays (d) none
825. Lift depends on(a) wing area (b) wing shape (c) square of velocity and density of air (d) All of above
826. Mark the correct statements(a) lateral leveling in heavy airplane is more critical (b) leveling lateral point always on longitudinal axis (c) leveling is always done in longitudinal axis (d) none
827. Which of the epoxy resin is fire resistant(a) DGEBA (b) Flexible (c) Telogeneted (d) Cyclo aliphatic
828. Marking of fluid line is given by(a) color and geometrical shape (b) show the function and direction of fluid flow(c) color and wards (d) all of the above
829. Mark the correct statement(a) carbon graphite has more compressive strength (b) Kevlar graphic has more compressive strength
(c) carbon graphite less more tensile strength than Kevlar (d) Carbon graphite has low compressive strength
830. Identify the figure(a) lead & zinc (b) rubber
831. Stress corrosion is likely to occur is(a) Al (b) Mg (c) Stainless steel (d) Al & Stainless steel
832. Counter sinking is the operation of(a) producing an angular surface at the end of hole (b) made in many diameter sizes and angles(c) making screws and bolt to flush with the surface (d) all
833. Shear nut thickness depends on(a) as per the dia of nut (b) half of the usual nut (c) as per the location of nut (d) none
834. When re – torquing is required for a nut(a) retightened the nut w/o backing off the nut (b) retighten the nut with backing of one turn of nut (c) retighten nut with backing of two turn of nut (d) never retighten the nut
835. Which fire extinguisher is best for e4lectrical fires(a) water (b) CO2 (c) Foam (d) All
836. In a transformer is primary frequency changes from 50Hz to 60Hz, keep the pick voltage constant then frequency(a) increases in secondary by ratio 60/50 (b) decreases in secondary by ratio 50/60(c) both 1 & 2 (d) none
837. While riveting hole center can be marked by(a) center punch (b) template (c) hole finder
838. When in a/c is required, embossing, etching and marking the electrical etching done by(a) electrical etching pencil if applied lightly (b) electrical etching pencil but only for CRS(c) electrical etching pencil is prohibited in a/c (d) both b & c
839. No of threads per inch can be checked by(a) scale (b) screw pitch gage (c) center gage (d) all
840. In oxy – acetylene welding to extinguish the flame(a) first close O2 then acetylene (b) first close acetylene the O2 (c) close both at a time (d) none
841. Hydrogen gas emits in the battery(a) during all phase in lead acid battery servicing (b) in Ni – Cad battery at the end of charging(c) when battery is overcharged (d) both a & b & c
842. When coil of wire is placed horizontal to the earth surface, and a bar magnet dropped from the top(a) fall with acceleration equal to ‘g’ (b) fall with acceleration less than ‘g’
843. For reaming hole should be undersized(a) ‘200’ to ‘500’ undersized (b) ‘003’ to ‘.007’ undersized (c) undersized (d) none
844. In ATA – 100 specification of cable, electrical wire are designated by(a) as prefix and suffix (b) at the end (c) in the middle (d) none
845. (1010101)2
(a) (85)10 (b) (58)10 (c) (64)10 (d) none
846. Die is made used for(a) cutting internal threads (b) cutting external threads(c) As in b, made of steel, hardened and tempered (d) as in a and made of steel
847. In florescent insp. Defect show as(a) green in black light (b) red stain (c) green in white light (d) blue
848. X – ray equipments are rated by(a) current (b) voltage (c) power (d) none
849. If size is not marked on drill(a) it can be find by sharpening drill gage(b) by center gage(c) found by drill size gage – no of left, fraction on right(d) found by drill size gage – no of right, fraction left
850. Every third tooth of Hacksaw is made straight(a) for sawing clearance (b) raker (c) ripsaw (d) none
851. Coller pin for castellected nut is made of(a) Steel (b) Cadmium plated low carbon steel (c) Stainless steel (d) Carbon steel
852. Vent plug of Ni – cad battery should be cleaned by(a) de – mineralized water (b) distilled water(c) warm water and distilled water (d) detergent
853. To improve tensile strength, ductility, shock resistance Mg. casting are normally(a) SHT (b) PHT (c) Annealing (d) none
854. A magnetic force always exert on(a) a charged particle (b) an uncharged particle (c) charged particle parallel to magnetic flux
855. Grub screw is used for(a) for locking threaded fasteners (b) by soldering(c) by peening (d) Both a & c are correct
856. Bearing strength is the force resist the(a) stretching & lengthening (b) sliding (c) all the point of tearing (d) none
857. In square thread(a) depth & width and space is equal (b) strong (c) all
858. O – ring can be checked by(a) 4 X magnification (b) by rolling the ring on a dowel – inner dia, can be checked(c) by rolling the ring on insp. Cone inner dia can be checked (d) all
859. Metalizing is the process of(a) rolling pure al, layer on al, alloy surface (b) Ni, and cad plating on steel(c) By spraying Ni, Cad, on steel with oxy – acetylene torch (d) All
860. Hollow propeller thickness can be checked by(a) eddy current insp (b) eddy current by opening it(c) UFD and can be also detect detamination (d) None
861. Eddy current inspection is a(a) Insp. For sub surface defects only (b) Insp for surface defects only(c) Insp by comparative test (d) Open defects
862. Which of the following are universal gate(a) NAND & AND (b) NOR & OR (c) NAND & NOR (d) None
863. Combination set can be used as(a) vernier caliper (b) depth gauge, height gage, normal trisqure & scriber(c) micrometer (d) all
864. What is the speed ‘B’ gear(a) 200 rpm (b) 600 rpm (c) 300 rpm (d) 166.3 rpm
865. When a component exceed the alert value(a) it should be rejected before the flight X (b) it should continue in flight(c) it can replace in flight or 10 hrs which is earlier (d) none
866. Mark the correct statement(a) brinell hardness is the dia of ball (b) lesser the rock well No. softer the material(c) more the Rockwell No. softer the material (d) none
867. Mark the correct statement(a) thrust bearing can take radial load (b) radial bearing are used in gears, shaft etc(c) roller bearing can take less radial load (d) all
868. Alert value for a component(a) recalculated ate every 3 years (b) recalculated at every 1 month(c) recalculated if it found unreliable (d) as in c & it should be less than original alert value
869. When the time b/w soaking and quenching increases(a) hardness increases (b) softer the material (c) Re - precipitation (d)
870. In 1 to 10 major data, the structure control of comp(a) sequence (b) selection (c) a & repetition (d) b & repetition
871. In P.N.P. transistor holes diffuse from pregion to N region able of(a) higher level of energy (b) thrillision (c) higher concentration of holes in pregion (d) none
872. Chemically transfer of metal from one to another is done to(a) corrosion resistances (b) build up (c) resistance to tarnish (d) all
873. Mark the correct statement(a) tubing size and specification stamped on it (b) small tubing by color code and marking
(c) both a & b (d) none
874. AN12H5 - indicates(a) dia 3/5 and head is not drilled (b) dia 6/8 and head is not drilled(c) dia 6/8 and head is drilled (d) dia 6/8 head and shank is drilled
875. Engine fires once in(a) one Rev. of crankshaft (b) two Rev. of crankshaft(c) 3600 Rev. of crankshaft (d) none of the above
876. Mark the correct statement(a) The thickness of the laminate and depth of discontinuity does not impose any problem in ‘C’ scan method(b) The pulse feathers of acoustic emission is analyzed to detect microscopic defect in acoustic emission method(c) Thermoscopy is most difficult method since it require material with high terminal conductivity(d) All of the above
877. Mark the correct statement(a) On a/c with a steer able nose wheel, the locking scissors are set to full swivel for towing(b) Tail wheel a/c should always towel backward(c) Release all the hydraulic charge before towing (d) All of the above
SUBJECTIVE QUESTIONS:
878. a) Orthographic projection N.D. BHATT page no. 470 diagram [fig 20.36] b) How many flating are used in a/c plumbing explain them.
879. a) What is the purpose of circuit breakers & lines? What is the property of fuse? b) What is the purpose of self locking nut? Describe any three types of self locking nut. c) What are the chemical treatment applicable for Aluminum.
880. a) What are constant voltage & current charging method? Why they are used? b) Write down truth table for NAND & NOR gates along with a neat sketch? Why they are called
universal gates? c) What are the methods to control fuel contamination.
881. a) What is corrosion? Describe its control and types. b) What are the inspections to be carried out on turnbuckle & what is the precautioduring trunbuck
installation? c) Describe various types of calipers. d) What are the different types of turbine engines used in a/c.
882. a) What do you mean by impendance. Calculate the impendance of the given circuit and current flow in the given circuit.
b) What are the six special inspections to be carried out on airframe as well as engine. c) Show with a neat diagram, flexible, extra flexible and non flexible cables.
883. a) Name the various parts of the micrometer & calculate its least count in inch. b) What is the angle of attack and what are its effects on lift and drag. c) Name the various instruments used for checking the performance of piston engine. d) Describe the principle of NDT by ECI.
884. Al – alloy Rivet 2024 can be used(a) used on A/C immediately after heat treatment (b) (c) (d)
885. Circular pitch (C.P) of gears(a) Distance between corresponding points on adjacent teeth at bitch circle.(b) (c) (d)
886. Bottoming TAPS are used for(a) To make thread property as the bottom of holes & not tapered.(b) (c) (d)
887. Hand Held Reamers have(a) Straight & taper stank (b) (c) (d)
888. How angle of object measured(a) Bevel protection & Sine Rule Method (b) Bevel protection only(c) Bevel protection & Cas Rule Method (d) Bevel protection & Sin Cas Rule Method
889. How the gear teeth size measured(a) Measured at the chord thickness where pitch circle crosses at points(b) (c) (d)
890. MTCS(a) Ball peen Hammer is used where bent is sharp (b) (c) (d)
891. Identify the bolt
(a) Re worked Bold (b) (c) (d)
892. Measure the reading (Refer shop theory) 140 20’(a) 14.20’ (b) 20.11’ (c) 30.10’
893. MTCS(a) Bolt has right hand threads except in special cases (b) (c) (d)
894. part No. AN 320 – 10 NoIr, 10 is(a) Dia of NUT 5/8” (b) (c) (d)
895. Identify the Bolt ALPPH - 88(a) Poll thro lock Rivet (b) (c) (d)
896. Primary control surface are(a) Aileron, elevator, Rudder (b) (c) (d)
897.Wings of High speed A/C are(a) Thinner in cross – section than L. A. (b) Thicker in cross – section than L. A.(c) Same as cross – section than L. A. (d) It is thicker toward the wing tip
898. Straight & Level flight(a) Thrust = Drag & Lift = Weight (b) (c) (d)
899. Stability of A/C around longitudinal Axis is(a) Lateral stability (b) (c) (d)
900. When A/C speed increases, there is a change (a) Dynamic pressure (b) (c) (d)
901. Inductance which offers change to current is (a) In A. C. circuit, inductance reactance (b) (c) (d)
902. In An A.C. circuit, inductance causes current to(a) Log the voltage (b) Lead the voltage (c) 180 out of phase (d) Phase with voltage
903. A wire of Resistance 4 stretches to twice its original length, Resistance is(a) 8 (b) 4 (c) 2 (d) 16
904. 7 Resistor connected of 20 each in 11 voltage 2 ammeter connected across the Ckt. measure(a) 7/10 Amp (b) 1/10 Amp (c) 2/10 A (d) 20/10 A
905. Speed of light energy is 3 lakes KM & freq. is 100 MHz, its wave length is (a) 3 meters or 9.27 H (b) (c) (d)
906. Convert 296 into binary(a) 100101000 (b) (c) (d)
907. To prevent corrosion Al. alloy sheets. How they are stored(a) only the coat of Linced/oil is sufficient (b) use of plastic cover without oil coating(c) Use of oil coating in addition to plastic cover
908. What causes De – lamination of composite layer(a) In adequate application of heat on pressure during process(b) (c) (d)
909. How the composites are electrical bonding(a) Al. metal is bounded to the composite to the adjacent metal to dissipate charger (b) (c) (d)
910. The triode grid purpose is(a) Reduces space charge (b) (c) (d)
911. Zener diode acts as a voltage regulator(a) To control the over voltage in transistorize voltage regulator(b) (c) (d)
912. P – N junction can not be used as(a) Rectifier (b) Amplifier (c) Transistor
913. When PN junction start conducting(a) When the plate is more + ve than the cathode (b) When the cathode is more + ve than the plate(c) When the cathode & plate is at same potential
914. The advantage of connecting cell in battery(a) in series when external voltage is equal to the total internal resistance of cell(b) (c) (d)
915. MTCS in case of Bearing(a) Taper Roller bearing takes simultaneously radial & axial load in one direction(b) (c) (d)
916. MUNTZ metal is(a) it is brass & made for manufacturing of bolts & nuts & excellent resistant to saline water (b) (c) haft (d)
917. Speed of computer is calculated by(a) Neno second (10-9)(b) (c) (d)
918. Brinelling is(a) Indentation framed during a Brinell Hardness test (b) (c) (d)
919. Elastometer in Bearing is(a) Layers of rubber impregnated in layers of metal (b) (c) (d)
920. Algorithm(a) has infinite (finite) inputs but definite output (b) (c) (d)
921. Computer can process at a time(a) one instruction (b) (c) (d)
922. In case of hydraulic seals color indicates(a) green color for sky drol fluid (b) (c) (d)
923. The thickness of electroploing is checked (a) By eddy current method (b) By BFD Test (c) By measuring with caliper
924. Magnetic particle inspection circular Magnetization show(a) Lateral crack (b) Longitudinal crack (c) 450 crack (d) Both b & c
925. The Magnetic field around current carrying conductor is(a) Concentric circle of magnetic field around conductor (b)(c) (d)
926. In Dye penetrant process developers fn is(a) React with penetrant to show cracks (b)(c) (d)
927. In Dye penetrant process How the parts are cleaned before process(a) Petrolium base process (b) Kerosene (c) Water & Volatile solvent
928. In Modern A/C & Jet A/C Titanium is used for(a) High strength to weight ratio, Heat resistance corrosion resistance, very hard fatigue resistance(b) (c) (d)
929. How the Fatigue Failure is indicated(a) 450 to the crack propagation (b) (c) (d)
930. Millibars is the units of Borometric P/R then standard pressure is shown by(a) 14.7 inches of mercury (b) (c) (d)
931. Theory of wt. & Balance, the distance between fulcrum & the object is(a) Lever Arm (b) (c) (d)
932. Which Material the Magnetic lines of force can pass very easily (a) Iron (b) (c) (d)
933. For Drilling Holes in plexi glass(a) Standard twist drills are used (b) (c) (d)
934. MTCS IN OR Gate(a) OR gate is energized when any one I/P is energized (b)(c) (d)
935. In electric Arc welding How the effective welding is ensure(a) By the penetration of filler Rod (b)(c) (d)
936. What information are necessary on blue print, while with threads on shaft(a) Major dia, TPI, Type of thread (b)(c) (d)
937. To prevent corrosion interior should be cleaned by(a) Vacuum pressure (b) (c) (d)
938. Grey color corrosion product is form in(a) Al. or Mg. alloy (b) Copper alloy (c) Steel alloy
939. Fully charged Lead acid battery have(a) 30% acid & 70% water by volume (b)
(c) (d)
940. For De Magnetization (a) AC decreasing correct is used gradually zero (b)(c) (d)
941. Range of Ammeter can be increased by(a) Shunt (b) (c) (d)
942. Pure Semi Conductor diode at 00C Has(a) Resistance decrease with temperature (b) Resistance increase with temperature(c) infinite resistance at 00C
943. Machine Screw should never used in(a) Stressed Area (b) (c) (d)
944. To locate the sub surface defect
(a) Eddy current & X – Ray is used (b) (c) (d)
945. Which metal Render steel Brittle at Rolling or Forg temp(a) Sulphur (b) (c) (d)
946. The Drawing in which objects are shown as TOP view, Front view, Bottom view(a) Orthographic Drawing (b) (c) (d)
947. In isometric Drawing lines are drawn(a) Vertical lines are drawn for & Horizontal line 11 to centre line(b) (c) (d)
948. Diameter of Dzus fastener measured in(a) 1/1.6 inch (b) (c) (d)
949. In a cell P. D. will be calibrated w.r. to(a) To the other electrode (b) The S.G. of electrode ceases to raise & remains constay(c) both sets of pintes releases gases freely (d) All the above
950. MTCS(a) Al base material are created with & coating, it will form a thin oxide film on the surface of the metal is exposed to air, it is prevent for there oxidation of the metal(b) Al base metal are coated with anoding coating it will lead to the corrosion(c) Cadmium plating of Al. will protect against corrosion(d) None of the above
SET 40 (JUNE – 2001) 951. In modern a/c the thrust is generated on the principal of
(a) Boilzman’s principal (b) Avogadro’s principal (c) Newton law (d) Bernoulli’s principal
952. Sudden apparent loss of capacity of battery is due to(a) Low electrolyte level (b) Show rate of charging (c) Internally open cells (d) Both a & b
953. Annealing of steel will caused(a) It will be difficult to machine (b) It will have internal stresses & strain(c) It will be soft, fine grain structure & easily workable (d) None of the above is correct
954. A substance in which chemical composition does not change but have different physical properties are called(a) Isotropic (b) Allotropic (c) Crystallization (d) Hygroscopic
955. Material with which aircraft structure is made is(a) 6061 – T6 (b) 2024 – T6 (c) 2121 – T4 (d) 3024 – T4
956. Which of the following statement is true, regarding the inspection of a stressed skin metal wing assembly known to have been critically loaded(a) If the rivet shows no visible distortion further investigation is unnecessary(b) If bearing failure occurred, the rivet shank will be fogged(c) If genuine rivet tipping has occurred, groups of consecutive rivet heads will be tipped in the same direction(d) If shaft failure has occurred, the sheet will be distorted from the rivet hole, out to the edge of the joint
957. What is the recommended practice for cleaning a Fuel Tank before welding?(a) Steam cleans the tank interior (b) Purge the tank with clean water(c) Oxygen comes through pressure regulator & shut – off value (d) All the above are correct
958. Aircraft parts which require more strength and little forming are made of Al - Alloy(a) 6061 (b) 7075 (c) 2117 (d) 5052
959. The aircraft fluid hoses which offer minimum resistance to fluid flow & long service life are made of(a) Teflon (b) Neoprene (c) Buna – N (d) Butyl
960. Shot – preening of surface of aircraft parts is carried out to-(a) Prevent stress corrosion (b) Prevent filliorm corrosion(c) Obtain a good surface finish (d) Obtain a rough surface for a better paint adherence quality
961. Carburizing flame is generally prevented during steel welding(a) It reduces carbon content (b) Penetrates the surface (c) It hardens the steel
962. Sherardizing is-(a) Heating metals in atmosphere of zinc (b) Heating metals in atmosphere of magnesium(c) Spraying molten zinc over metal (d) None of the above is correct
963. Aircraft upper fuselage skin is made of -(a) Lower gauge material (b) Heavier gauge material than the skin of lower fuselage(c) Same material as that of lower (d) None
964. Mark the correct statement(a) Aircraft seats & seat tracks must be serviceable without which the aircraft cannot be flown(b) Wing tips must be serviceable, without which the aircraft cannot be flown(c) Nose cone must be serviceable, without which the aircraft cannot be flown(d) None of the above are correct
965. Intergrannular corrosion is due to(a) Attack of chemical on the material surface (b) Attack in the crystalline layer of the material
(c) Attack in the area of contact of differential material (d) All the above are correct
966. Mark the correct statement(a) If bearing failure has occurred, the rivet shank will be joggled(b) If genuine rivet tipping has occurred group of consecutive rivet used will be tipped in same direction(c) If rivets show no visible distortion, investigation is unnecessary(d) If shear failure has occurred the sheet will be distorted from rivet hole to the edge of sheet
967. Mild steel rivet used for riveting(a) Nickel steel parts (b) Al. Alloy parts (c) Steel parts (d) Mg – Alloy
968. Useful load is(a) Weight of passenger and cargo(b) The difference between max. Gross operating wt and empty wt(c) The difference between max. Gross operating wt and zero fuel wt(d) The difference between auw & zero fuel wt
969. Thermister have(a) + ve coefficient of resistance (b) – ve coefficient of resistance(c) (d)
970. Condition monitoring maint. is(a) The item should be inspected regularly and replaced before fails(b) (c) (d)
971. Iron is heated above AC3(a) Grains become coarse (b) Grains become finer
972. Regarding heat treatment, correct statement is(a) Hardness incuses by the increase in % of carbon, after a limit if we increase carbon % hardness decreases (b) (c) (d)
973. Tempering is done to make steel(a) tough with strain (b) to make steel soft & ductile (c) to change in mar tensile structure (d) All
974. Strain is defined as(a) Deformed length/original length (b) unit deformation of body (c) both a & b (d) none
975. Mark the correct statement(a) Phosphate coating is used for steel and give good base for point(b) achromatizing is chrome plating (c) both a & b
976. Eddy current testing is used for(a) wing, turbine, welding, wheel bolt hole (b) (c) (d)
977. Materials are to be case hardened very effectively up to 0.040” by which of the following method(a) Induction Hardening (b) Liquid carburizing (c) Pack carburizing (d) Shot preening
978. Material heated up to lower temp. of higher critical temp. that is called(a) Eutectoid (b) Ferrite (c) Austenite (d) Hypo eutectoid
979. High speed steel content(a) Chrome - Vanadium (b) Chrome Cobalt Molybdenum(c) Cobalt tungsten Vanadium (d) Tungsten Chromium
980. After machining, welding, casting, or forming operation of steel part which heat treatment is carried out toRemove internal stresses(a) Normalizing (b) Annealing (c) Hardening (d) Tempering
981. Preload applied to a bolt during tightening should be(a) More than the highest stress taken by the bolts (b) Equal to 1.5 times of yield to relieve from stress(c) Equal to yield point to assure stress
982. Tapered bolt holes bearing surface should be checked by(a) Cannot be checked because of taperness(b) Applying engineers blue to the hole and lightly rotating the bolt
983. The most common method of preloading a bolt(a) Applying a specified torque to the nut during tightening(b) Appropriate torque is obtained by using torque wrench (c) Both a & b
984. Which of the following is Nitra alloys(a) Al (b) Ti (c) Ni (d) All of the above
985. Al clad Al alloy is used in a/c(a) Al clad has an advantage over painted alloys that corrosion resistance properties are maintained after several years of service(b) Al clad retains most of its original strength after several year of service(c) Attack in the area of contact of differential material (d) All of above
986. Anodizing provides(a) An oxide film over Al (b) Inferior to paint base (c) Both a & b
987. Exhaust collectors are made up of(a) Monel (b) Titanium (c) Inconel (may be 18 – 8 steel, c – steel) (d) K - monel
988. Strain hardened Al alloy is usually used in construction of skin, cowlings, and fuel tanks(a) Strain hardened Al alloy has better strength than heat treated Al alloy(b) Corrosion resistant and easily bent, welded etc. (c) As in a & b(d) Strain hardened Al alloy does not require heat treatment after structure is made
989. Which of the following is correct in case of tempering, higher the temp during tempering?(a) Lower the strength & hardness but grater the ductility (b) Higher the hardness as well as ductility(c) Increase strength, hardness & lower ductility (d) Decreases both ductility and strength
990. A metal is mechanically and thermally damaged, that can be detected by(a) C - scan (b) Radiography (c) Acoustic emission (d) Thermograph
991. A dubblers is applied on structure having 3 rows of rivet & rivet dia is given D (a) Minimum edge distance is 2D & rivet pitch minimum is 3D(b) Edge distance is 2D and minimum spacing is 5D (c)
992. Corrosion is removed from parts& bow is developed can be detected by(a) If the stressed skin fatigue corrosion is removed the bow is measured by DTI(b) Bow in a/c parts are measured by DTI (c) Both a & b
993. Dzus turn lock fastener dia. is measured in (a) 1/16th of an inch (b) 1/8th of an inch (c) 1/100th of an inch (d) 1/1000th of an inch
994. MTCS(a) Plastic should be installed tightly so that it is not loose(b) Plastic have greater coefficient of expansion that metal(c) When installing plastics the plastic and metal should have similar expansion characteristics
995. Transverse pitch in rivet layout is(a) Distance between centers of rivets in same row(b) perpendicular distance between adjacent rivet row(c) as in (a) & should be half of the head dia (d) as in (a) & should double of the head dia
996. False brinelling is(a) When dissimilar metal rub each other (b) Sharp deep grove in bearing(c) When dissimilar metals rub each other & movement is limited
997. MTCS(a) a/c should be always jacked during leveling (b) may not be required to be jacked during leveling(c) (d) All
998. Rivet layouts is determining(a) type of head & size (b) no of rivets(c) as in a & b (d) as in c & material temper condn. & strength
999. When battery master switch is ON no response(a) s/w defective (b) open cell (c) battery defective (d) all
1000. Borsical is(a) silicon coated boron laminated (b) thermo set & polyester epoxy(c) thermoplastic matrix (d) metal matrix
1001. Plastics should be cleaned by(a) Mild soap & water & grit free cloth (b) Acetone
1002. Fluid lines are identified by(a) color code, words & geometric symbol(b) identification markers are placed immediately adjacent to each valve, regulator, filter or other accessories within line(c) The markers identify each lines function, content & primary hazard & direction of fluid flow(d) All of above
1003. Load is applied & removed and load direction is also reversed that is called(a) fatigue set in (b) (c) (d)
1004. What is a cause of generate brush arcing?(a) Sealing brushes with no. 000 sandpaper (b) carbon dust particular
(c) low spring tension (d) high spring tension
1005. What type of instrument is used for measuring very high values of resistance?(a) Meg ohmmeter (b) Shunt – type elements (c) Multimeter
1006. What is indicated by a black smoky residence streaming back from some of the rivets on an a/c?(a) The rivets were excessively work hardened during installation(b) Exfoliation corrosion is occurring inside the structure(c) Fretting corrosion is occurring inside the structure
1007. In bending neutral axis – [ISA – 146](a) Neither stretches nor compresses (b) Stretches but not compresses(c) Compresses but not stretches
1008. Induction motor has advantage over other motors(a) It requires less cooling (b) It contains no brushes and commentator(c) It operates either on ac or on dc
1009. Before welding fuel tanks should be – [AL/3-15](a) purged with stream (b) washed with water (c) both a & b
1010. Magnaglow is(a) Similar to MPI(b) dissimilar to MPI & the indication is taken under black light(c) similar to MPI & the indication is taken under black light
1011. Eddy current is used for flow detection for(a) Shafts, turbines, wheels (b) (c) (d)
1012. Thiokol is(a) Polysulfide polymer (b) (c) (d)
1013. Reflector is used for -(a) Internal inspection of turbine (b) Inclusion and cracks in metals
1014. Barcol tester is used for testing(a) steel & other hard metals (b) Al alloys, cu, brass & other soft metals
1015. Battery shows less than 80% capacity(a) recycling is required (b) cell balancing required (c) all
1016. Load current in each phase is misused by(a) ammeters in each phase (b) current transforms(c) single ammeter fitted with a smites to select the please
1017. Engine mounts are made of(a) Heat treated Al – alloy forgiving to get high strength to weight ratio(b) Cr – Mo steel tubing (c) Ni – Cr – Mo forgiving
1018. Dzus fastener steel diameter is measured in [8049] (a) eighths of an inch (b) sixteenths of an inch
(c) tenths of an inch (d) thousands of an inch
1019. What is indicated by a black “smoky” residence streaming back from same of the rivets on an a/c?(a) The rivets were excessively work hardened during installation(b) Exfoliation corrosion is occurring inside the structure(c) Fretting corrosion is occurring inside the structure
1020. If it is determined that spongy brake action is not caused by air in the brake system what is the next most Likely cause?(a) Worn brake living (b) Internal leakage in the made cylinder (c) Deteriorated flexible looses
1021. Stress is(a) Internal force that resists deformation (b) Dependant on strain(c) Tension, Compression & torsion
1022. Hidden damage may extend beyond the area of visible deformation(a) Rivet head will be tapped (b) Rivet head should be tapped with cape chisel(c) Tap Blow the manufactured heads and the shop heads on the rivets and try to slip a piece of 0.020” feeler Gauge under the heads
1023. MTCS (a) The softer the material the more is the bend allowance(b) The harden material the more is the bend allowance(c) Both a & b (d) Bend allowance is similar irrespective of bend radius
1024. Curving of formed or extruded angles are done in the (a) V – block and mallet (b) (c) (d)
1025. A little movement between the tightly joined surfaces causes(a) Exfoliation corrosion (b) False brine ling (c) Stress corrosion
1026. NACA riveting (a) The rivet is installed from the inside of the structure so its shank sticks out through the counter sunk hole and the shop head will be flushed with the outside skin and the protruding manufactured head will be on the inside of the structure
1027. A substance in which chemical comport doesn’t change out & have different physical properties-(a) Isotropic (b) Hygroscopic (c) Allotropic (d) Crystallization
1028. When repairing a small hole on a metal stressed skin, the major consideration in the design of patch must be :-(a) Shear strength of riveted joint (b) use rivet spacing similar to a seam in skin(c) the bond b/w patch skin be sufficient to prevent dissimilar possession(d) both a & b
1029. Capacitance depends are (a) Area of the plates (b) Thickness of dielectric material(c) Dielectric coeff. Of material b/w plates (d) all
1030. When carburizing flame is used to wild steel
(a) Carbon content will continue to harden the steel throughout(b) Carbon content will continue to harden the steel to a specified(c) done on wrought steel (d) all
1031. Starter generator can be cooled by (a) Bleed air (b) Integral fans & rain air(c) Quaint air (environmental system cooled air) (d) Ext. motor driven for
1032. A/c hoses are (a) Pressure tested (b) Electricity tested (c) Hyd. tested (d) None
1033. Ale lad is used as:-(a) No need of treating it further (Corrosion resistant) (b) Can be h/t.(c) Not better than pure aluminum (d) None
1034. What is the principal adv.? Of series wound d.c. motor(a) High starting torque (b) Low starting torque(c) suitable for constant speed use (d) speed slightly higher when unloaded
1035. Copper wire is to be replaced by Al. wire then -(a) Al. wire should be greater by 2 gauges (b) Al. wires should be greater ½ the gauge(c) None (d) All
1036. How many cycles of a6 voltage are produced in a 6 pole alternation of revolving field type for each revolution of rotor?
(a) 4 (b) 5 (c) 3 (d) 6
1037. Filliform corrosion occurs (a) Near rivets causing bulging of the skin (b) Beneath paint causing bulging or flaking(c) both a & b are correct (d) On metal surface which have protective film
1038. Which treatment is given to copper alloy, to give a good bearing surface:-(a) Anodising (b) Hardness (c) Pickling (d) Case hardening
1039. Annealing of steel will cause (a) It to be difficult to machine (b) It to have internal stresses and strain(c) It to be soft ductile and have fine grain structure
1040. A pure metal can’t be hardened because:- (a) There is little or no structure change (b) Grains become coarse
1041. If aluminum strip is heated and suddenly quenched in cold water it is said to be - (a) Normalized (b) Tempered (c) Solution heat treated (d) Precipitation heat treated
1042. Nicote is used:-(a) As sealant in crack in fuel tanks (b) As corrosion preventive compound
1043. CRS best welded by:- (a) Spot welding (b) Insert arc welding
1044. When testing OVHT system, press tests S/W:-(a) OVHT illuminates ON illuminates (b) OVHT illuminates and there is smoke in cockpit
(c) OFF illuminates OVHT goes off (d) OVHT illuminates & ON light goes off
1045. Below 0.85% of carbon in steel, higher the carbon:-(a) Greater the harden ability (b) Lesser the harden ability(c) More the cooling rate (d) Less the cooling rate
1046. Mg alloy solution heat treated for enhancing:-(a) Harden ability, ductility (b) Tensile strength ductility and shock resistance(c) Toughness yield point corrosion resistance (d) Tensile strength corrosion resistance
1047. Rivet coding or diagram indicates:-(a) Rivet type and location (b) Rivet type material (c) Rivet type location material
1048. Hose identification marking indicates:-(a) Manufacture manufacturing date Expiry date(b) Manufacturer, manufacturing date, Pr., temp., Limitation material(c) Mat., manufacture and pr. only (d) ATA
1049. Carbon in steel at room temperature exist in form of:-(a) Iron carbon (b) Cementite (c) Free carbon (d) Mechanical mixture of cementite and ferrite
1050. Strain in apart is calculated by:-(a) force divided by area (b) original length plus extensions in length(c) Total length divided by extensions in length (d) Unit distortion
1051. Un - cona (a) When a component is allowed in (b) service dill if insitu, without distant(c) When inspection of components are displeased (d) When components can be easily replaced
1052. The indication of loose/claneage rivet on a/c structure is by (a) grey (b) white (c) green (d) either a or b
1053. In case hardening process(a) All metals can be case hardened (b) steel can’t be case hardened(c) steel can be case hardened to a certain parentage of carbon(d) The process does not depend upon the type of steel
1054. MTCS(a) When swaging the terminal in the cable, the terminal is soldered to the cable to hold it in correct position before savaging(b) before swaging preservative compound is not applied on the cable (c) cut the length of cable
1055. MTCS(a) while inspecting a part by x – ray method defect is detester absorbing the x – ray photon or photon penetrate the part
1056. While inspection the part with magnetic particle in to show all the discontinuities/ electrets.(a) Make longitudinal and circular magnetization (b) Only longitudinal magnetization is done(c) Linear magnetization is done (d) all the above correct
1057. Mark the correct statement
(a) The term ac plumbing refers not only to the hose, tubing’s, fitting and connectors used in the a/c, but also to the process of forming and installing then.(b) A/c plumbing lines usually made of metal tubing and fitting or flexible here (c) Both a & b
1058. Mark the correct statement- (a) High fatigue factor cu – tubing is chief reason for its replacement. It becomes hard & brittle from vibration and finally breaks.b) In some special high pr. (3000 psi) hud. Installations, c.r.s. stel tubing either annealed or hard is used.(c) c.r.s. tubing does not have to be annealed for flaring or from because flashed section is some what strain Hardened during flaring process.(d) higher tensile of c.r.s. permits the use of tubing with
1059. Mark the correct statement :- (a) stress corrosion is combination of residual tensile stress in the part & corrosive environment(b) When two prate are lightly fastened together and have slight movement between than educes galvanic corrosion(c) Intergranular corrosion occurs along grain boundaries of the metal (d) Both a & c
1060. Mark the correct statement (a) an direct chemical attack anodic & catholic change takes piece at the same point simultaneously. Whill in electrochemical attack anodic & catholic changes takes place a distance apart.(b) In electri chemical attack anodic & catholic changes takes place at the same point. While in ethnical
attack theca takes place at a distance apart(c) In both direct chemical attack & electrochemical attack the anodic & catholic changes takes place at
same point.
1061. Mark the correct statement- (a) When mg – part protective crating is damaged. It should be rest erect promptly by allowing chromic acid To remain in place for 5 to 15 minutes.
1062. Mark the correct statement(a) A/c nuts are coupe is left & flight handed treads.(b) can be identified only by characteristic culture of Al and brass
1063. 2117-t rivet is-(a) called field rivet (b) used as received from manufacturer no need treatment before driving(c) high corrosion resistance (d) All
1064. During Annealing after poat has been culled at 900f of full nonce the alternate method of this slow cooling is
(a) cooling in water (b) cooling in air (c) by barging the points in Ash/lime (d) All
1065. sheardizing is treatment(a) heat the metal in ZNO atm. (b) heat the metal in phosphate atm.(c) applying with chromate treatment (d) All
1066. in p – n junction of LED, light is emitted by - electrons(a) player (b) nlayer (c) Either p or n layer (d) None
1067. In LED green color is produced by -(a) Gallium Arsenide (b) Gallium phosphide (c) gallium arsenide (d) None of the above
1068. In CRT display, coatings for collecting secondary electrons are connected to - (a) Grid potential (b) 1st accelerating anode (c) 2nd accelerating anode (d) focusing anode
1069. Hard landing of an aircraft requires inspection off(a) wing centre section (b) Balancing of flight centrals (c) (d) All the above are correct
1070. For modern jet aircraft, to ensure continuous airworthiness & inspection programmer for all structure to(a) damage tolerant rating. (DTR) (b) Accidental damage rating (ADR)(c) Environmental detection rating (EDR) (d) crack growth.
1071. Corrosion on metal is of direct corrosion & electron chemical corrosion. It terms as anodic direct chemical attack is occurring simultaneously at the same point.
(a) Electrochemical corrosion taking place at measurable distance apart, the change in direct chemical attack is occurring simultaneously at the same point.(b) Electrochemical attack is occurring simultaneously at the same point where as the direct chemical attack occurring at a measurable distance apart.(c) Both are occurring at the same point (d) Both are occurring at a measurable point.
1072. If the surface of anodic treated Al. allow is corroded, the corroded the corrosion is removed by corrosion(a) severe abrasive material (b) Al. wool (c) steel wool (d) wire brush
1073. Why are the iron cores of most of the induction coils laminated:-(a) To reduce the core reluctance (b) To increase the core permeability(c) To reduce the effects of eddy current(d) To reduce the production of weak areas & strong areas on the core faces
1074. The voltage in an A.C. Transformer secondary that contains twice as many loops as the primary will be:-(a) Greater & the amperage less than in primary (b) Greater & the amperage more than in primary(c) Less & the amperage less than in primary (d) Less & the amperage greater than in primary
1075. Which is the method used for restoring generator field resident magnetism:-(a) flash the field (b) demagnetize the commutator (c) reset the brushes (d) energize the armature
1076. the inductor type inverter output is controlled by the -(a) No. of poles & the speed of the motor (b) voltage regulator(c) D.C. stator field current (d) A.C. armature coils
1077. MTCS(a) corrosion develops in thicker metal faster than the thinner metal(b) corrosion develops in thicker metal faster than the thinner metal(c) corrosion develops in both the metal in same way(d) heat treatment can change the corrosive property of the material
1078. when the electrolyte is spilled & is cleaned with(a) sodium bi carbonate only (b) acidic electrolyte by sodium carbonate(c) potassium hydro – oxide can be cleaned with vinegar (d) both a & c
1079. MTCS(a) lead acid batteries exposed to cold temp. are subjected to plate damage due to freezing of the electrolyte(b) to prevent the freeze damage, maintain the sp. Gravity at reasonable high level bearing in mind that lead acid battery are subjected to a constant discharge due to the internal chemical action(c) Ni – Cd battery, the electrolyte will freeze at approx. – 150 F to 750 F (d) All
1080. If battery falls to give 80% capacity test -(a) cell balancing check will be done (b) (c) (d)
1081. current in alternator phase can be sensed by(a) current transformer (b) (c) (d)
1082. MTCS(a) intergranular corrosion may exist without visible surface evidence
1083. When repairing a small hole on a metal stressed skin, the mazor consideration on the design of the patch should be
(a) shear strength of a riveted joint
1084. clad Al – alloys the are used in a/c because they -(a) are less susceptible to corrosion than uncoated Al – alloys
SET 07 (FEBRUARY – 2004) 1085. What is the difference between bolt and screw
(a) screw is made of lesser strength material (b) screw having no defined grip length(c) screw differ from bolt only in heads style (d) all the above
1086. In case of the bolt grip length(a) It should be equal to thickness of mat generally(b) At may be slighter longer grip length should be used with washer(c) Must not be longer than mat thickness (d) None
1087. “Furring” occurs in MPI when(a) insufficient magnetization (b) excessive magnetization(c) mishandling or cordessness atten/during magnetizing part (d) all the above
1088. Mark the correct statement, when securing Al and Mg alloy structure(a) Al – washer should be used under steel bolt head (b) Al – washer used under nut of steel(c) Any corrosion attacks washer rather than structure (d) All of the above
1089. Linseed oil used as:-(a) cleaner salvent (b) paint removal (c) both a & b(d) to prevent deterioration of protective treatment and used inside the tube
1090. Lapse rate is:-(a) rate of decrease of volume as per rise in altitude(b) rate of decrease of temp. at rate of 1.98 degree C/1000th feet rise in high(c) Decrease in rate of Pr. with rise in altitude (d) None
1091. Degreasing agent is kept at temp(a) 60 degree – 70 degree C (b) 70 degree – 80 degree C(c) 70 degree – 90 degree C (d) none
1092. Clogging of metal particle in the gullet of file teeth is known as:(a) peening (b) pinning (c) clogging (d) stretching
1093. Spreading & stretching of metal by hammering is known as:-(a) peening (b) swaging & peening (c)
1094. Proper indication in DPI is not obtained because:-(a) more dye is applied (b) penetration is not proper(c) improper surface cleaning (d) Dye used is less in quantity
1095. Stress/unit strain is called(a) proof stress (b) proper final limit (c) modulus of elasticity (d) elastic limit
1096. Load is applied per square inch a material can with stand without resulting in a permanent elongation more Than 0.0001” per inch of gage length after complete release of stress is known as:-
(a) Elastic limit (b) proof stress (c) Proportional limit (d) Yield strength
1097. Pin is used:-(a) in non load carrying part (b) in shear application (c) is not reused (d) both b & c
1098. Flat head pin used:-(a) in tie rod terminal (b) secondary control systems which are not subjected to continuous operation(c) both a & b
1099. Clevis bolt installed(a) with caste nut (b) with shear nut(c) as in a & locked by cotter pin (d) as in b & locked by cotter pin
1100. In no pact of self nut mark the correct statement:-(a) It is used whole rotation is involved (b) It is used in vibration(c) It is not used in vibration (d) It is used in light connection
1101. Tolerance means:-(a) positive allowance & negative allowance (b) positive allowance(c) In orthography not more than 3 views are possible (d) Both a & c
1102. Fit is defined as(a) involved between bolt shank and hole when pushed(b) In term of dia of bolt & hole (c) both a & b (d) all are correct
1003. Special, screw is built(a) for close tolerance application (b) for shear load application(c) for heat treated part (d) all the above
1104. In respect ring which is correct(a) used in Pr. then 1500 (b) a back up used in high pressure application in actuator cylinder(c) Same size shape should be replaced (d) All the above
1105. The purpoot accumulator is:-(a) It maintain the system pressure (b) It provide rational pressure when engine is not running(c) as in a compensate the small leakage (d) as in b
1106. Post emulsitiable dye is removed in ‘in – situ” position by(a) whip pining clean rag damaged with dye solvent followed by cleaning by dry rag
(b) carbon chloride and clean with clean rag(c) no requeaning or removal (d) as requn manufacture’s instruction
1107. Lock bi combination of (a) rivet + (b) lock bolt (c) bolt + (d) rivet +
1108. Grindiack indicates as:-(a) sharp line (b) irregunes over the affected area(c) indicates in magnetic writing (d) as bulb into a ridge which stands proud of the induced
1109. Satistary magnetic flux in specimen is known by (a) thin slot material in which crack has been artificially induced (b) by amter(c) by volater (d) none
1110. About AND gate which is correct:-(a) when inputs are given there will be an output(b) when any of the input is not given output will be given(c) more than one output may be obtained but only one input is required(d) all of the above
1111. Galvanometer can be used as voltmeter by:-(a) connecting low resistance in series (b) connecting high resistance in parallel(c) connecting high resistance in series (d) connecting low resistance in parallel
1112. Purpose of tempering is:-(a) to reduce strength (b) to reduce ductility and increase brittleness(c) to reduce hardness and reduce brittleness (d) to increase hardness and reduce brittleness
1113. About anneling which is correct during and after anneling(a) high role of cooling fine grain (b) slow cooling, low strength(c) slow cooling, high strength (d) none
1114. Spherodising is done in:-(a) prolonged heating just above critical temp. (b) prolonged cooling just below critical temp.(c) prolonged heating just below critical temp. (d) smaller timer heating below critical temp.
1115. Mark the correct statement about cable:(a) on diameter of wire, length is dependent (b) strands are laid to build up a cable(c) sized by no of stands multiplied by no of wires in each strand (d) all of the above
1116. Paint is combination of(a) Enemet = pigment (b) Vernish + Enamel (c) Pigment + vehicle (d) Pigment + vernish
1117. Paint removal is necessary from component, structure when(a) corrosion is suspected forun between the paint(b) if paint is not compatible with repair scheme then touch up (c) if paint finish is destroyed (d) all the above
1118. Plastic stored(a) horizontally one over another and height should not be more than 18”(b) horizontally with a protective barner plastic between two sheets(c) as in a + smaller sheet should be stored over the larger sheet to avoid unsupported over hang
(d) as in a + larger sheet should be stored above smallest sheet for proper distribution load
1119. Buckling of plastic during storing prevented by(a) Strong tilted 10 degree from vertical in a proper bin with the wrapping with masking tape(b) strong horizontally with masking paper tape as protective means with high not exceeding 18”(c) (d) all the above
1120. Wrong drawing:-(a) give rough idea about the component, system drawn(b) it includes assembly drawing (c) as in b + includes installation drawing (d) all the above
1121. Mark the correct statement:-(a) leader line is used to put the dimension over(b) phantom lines used to indicate the portion of part not shown on drawing(c) break – in – line indicates the alternative position part (d) none
1122. Drag which don’t contribute to the Int of a/c is:-(a) skin friction drag (b) parasite drag (c) wing drag (d) profile drag
1123. Due to presence of bacteria in fuel tank which is likely to occur:-(a) craves corrosion (b) fretting corrosion (c) microbial corrosion (d) galvanic corrosion
1124. if any of the winding in transformer is sorted then:(a) it is easily can be detected by ohmmeter (b) transform will be heated up(c) output will be higher (d) output remains const of can be checked by mugger
1125. Mark the correct statement regarding Ni – Cd battery(a) Stated charge know by s. g. at electrolyte (b) Electron flows from – ve and O2 evolved from + ve plate(c) Electrical leakage can be known by milli – voltmeter test between plate and container(d) Both a & c
1126. Brinell no indicated by(a) Weight applied in lbs divided inch sq impression(b) Weight applied in kgs and divided by mm sq. impression(c) Weight applied in kgs and divided m2 impression(d) With applied in lbs and divided by clia – at impression
1127. Find out the total equivalent resistance(a) 3r (b) 2.5r (c) 1.5r (d) 1r
1128. Which gears tooth cut parallel to the axis of rotation(a) Spur gear (b) herringbone gear (c) Worm gear (d) Bevel gear
1129. Which of the followings having – ve coefficient of resistance with increase in temp.(a) Conductor (b) Thermistor (c) Transistor (d) Relay
1130. The property of fluid of giving off vapour in sufficient quantity so as to ignite momentarily when flame is applied is known as.
(a) Fine point (b) Flash point (c) Vapour point (d) Burning point
1131. High pr O2 cyl. For breathings purposes is identified by:-(a) Green color with the letter “BREATHING OXYGEN” stendled while letter with I” height
(b) Yellow color with letter AVIATOR’S BREATHING oxygen with yellow color I” height(c) Green color with letter in white with I” height AVIATOR’S BREATHING OXYGEN(d) Yellow color with letter stenciled aviator’s breathing oxygen
1132. When towing a tail – wheel a/c then mark the correct statement(a) Tail wheel must be locked (b) Tail wheel must be unlocked(c) As in a + by attaching a suitable rope (d) As in b + a suitable skid attachment and lifted upward little
1133. Anchor point of a/c on ground is known as:-(a) screw picket (b) pad eyes (c) stakes (d) spike
1134. Light a/c is parked by:-(a) cable (b) chains (c) manila rope with I” slackness (d) with any rope
1135. Before jacking an a/c few steps are taken regarding this mark the correct statement:-(a) for heavy a/c and smaller a/c same procedure & precaution should be observed(b) jack must be of capacity 20% more than the weight to be lifted(c) for proper capacity, condition of locking pin or arm, proper functioning (d) all of the above
1136. Resistance depends on:-(a) length, material, temp, cross, section (b) length of temp(c) mat of cross section (d) mat of emp of length
1137. Mark the correct statement:-(a) theosat used to vary voltage in the circuit (b) potent – meter used to vary the voltage in circuit(c) potenaometer is a terminal device (d) none
1138. For tempering condition which is correct:-(a) T2 indicates s.h.t. + cold worked (b) T3 indicates sal. H. treated(c) T6 indicates s.h.t. + o.h.t. (d) all the above
1139. Regarding check nut which is correct:-(a) it having right hand thread & left hand thread (b) as in (a) & used under plain nut(c) having left hand thread (d) as in (c) & used under plain nut
1140. Two stoke actuating cylinder is operated by:-(a) two way selector valve (b) four way selector valve(c) pneumatically operated and also which provide returning force (d) all of the above
1141. Mark the correct statement:-(a) shunt type ohmmeter is used to measure lower resistance(b) meggar is used for very higher resistance(c) Multimeter is sensitive more to A.C. than D.C. (d) All the above
1142. BASIC if expanded gives:-(a) Beginner All Purpose Symbolic Instruction Code(b) Beginner All Purpose Symbolic Information Code(c) Beginner All Purpose System Indian Code(d) Beginner All Purpose System Instrument Code
1143. SCR is:-(a) two junction diode (b) three junction diode(c) two junction are forward biased, two are reverse biased (d) all of the above
1144. Mark the correct statement regarding reamer(a) it is made of high carbon steel or HSS (b) it roughens the drill hole to large size(c) as in 1 +enlarge the drill hole to close tolerance and smoothness(d) all the above
1145. Current from emitter to collector flows when:-(a) Emitter base function is forward biased & base collector junction is reversed biased.(b) Emitter base junction is reverse biased & collector base junction is forward biased.(c) Base collector is close (d) None
1146. Mark correct statement regarding punch:-(a) It is used to locate centre to be drilled (b) pin punch is a tapered type punch(c) Another name for drift punch is drive punch (d) all the above
1147. Files are:-(a) annealed & tempered (b) made of high grade tool steel(c) Hardend & tempered (d) Both ‘b’ & ‘c’
1148. Alodine is applied by(a) cladding (b) dipping (c) priming (d) as per manufacture’s diagnosis
1149. For safe balance while jacking:-(a) weight added forward & rearward of fuselage (b) must not be jacked on single wheel(c) always jacked inside the hanger (d) all the above
1150. Force acting around a charged body is:-(a) Electromagnetic field (b) electrostatic field (c) magneto motive field (d) induction field
1151. Unit of magnetic flux is:-(a) weber (b) weber / minimum (c) gauge (d) tesla
1152. Which of the following having lowest fusing temperature:-(a) eutectoid (b) hypo eutectoid (c) hypereutectoid (d) electectoid
1153. The chemical mixture of Fe & carbon is:-(a) cementite (b) pearlite (c) eutectoid (d) austentite
1154. Shake proof washer used where:-(a) self locking nut not recommended(b) castle, sheer nut not recommended where locking facility not available(c) where frequent removal & installation not desired (d) all of the above
1155. Indication voltage is dependent in case of thermocouple on:-(a) material & length of the thermocouple (b) difference in temp. between hot & cold junction(c) resistively of thermocouple material (d) All of the above
1156. Characteristic of diaphragm or capsule dependent on:
(a) Thickness of material (b) corrugation depth and number of corrugation(c) Capsule area (d) All of the above
1157. Mark the correct statement regarding fire detection sys:-(a) thermal switches connected in work each other & parallel with indicating light(b) thermocouple element works on rate of temperature rise(c) probes are connected in series between two circuit loop in fenwal spot detection system(d) all the above
1158. If aluminum part is not quenched within recommended time after heating then:-(a) corrosion may occur (b) aluminum will be excessive brittle(c) repreceipitation will occur (d) Both ‘a’ & ‘c’
1159. Improved quenching can be obtained by, in case of ferrous:-(a) suitable quenching media (b) time gap between soaking & quenching(c) (d) all the above
1160. During refueling chock is set at little distance from wheel because:-(a) to absorb shock when tire is set (b) electro static generated(c) chock may be trapped into the fire (d) chock can be applied if a/c moves during refueling
1161. Close tolerance bolts are:-(a) pushed into the hole by hand pressure(b) it is machined accurately than general purpose bolt and installed by hammering(c) used where light drive fit is required (d) all of the above
1162. Mark the correct statement:-(a) ½ “ or less dia hole can be drilled by hand drill(b) hole drilled undersized enlarged and smoothened by reamer(c) as in ‘b’ + reamer is made of HSS & carbon steel (d) all the above
1163. Mark the correct statement regarding washer:-(a) Al washer is used with both Al & mg structure(b) As in ‘a’ and where dissimilar metal corrosion is a factor(c) Generally ‘cd’ plated washer is used (d) all the above
1164. In digital multi meter, setting is:-(a) Low (b) Shunt is used (c) Zero (d) High resistance
1165. Changes according range of switch(a) No need of zero adjustment (b) (c) (d)
1166. To increase range of Ohm – meter to measure high voltage required internal N resistance to be:-(a) Low (b) High (c) Constant (d) Balance with defection of probes
1167. Advantages of A.C. over D.C. for use on long r – range transmission is:-(a) State and easy to generate (b) It is easy to rectify A.C.(c) Thinners conductors are used (d) All above are correct
1168. In capacitor charging, if key is open and if distance R betn plates is increased, then(a) Capacitance decreases (b) Capacitance increases
(c) P.D. increases (d) P. D. decreases and stored
1169. E.M.F. induced in the generator is:-(a) Lenz’s law (b) Electromagnetic induction(c) Flemings right hand rule (d) Kirchhoff’s law
1170. Oil temp. measured with:-(a) Thernustors (b) Thermocouple (c) Diodes (d) Temp. indicator
1171. MCS:-(a) Zener diod used for as amplifier (b) Tunnel diode used for voltage regulator(c) As in ‘b’ and as an oscillator(d) Varactor diode is used for skitching circuit of electronic tunner
1172. Conversion of (4D)16 to binary(a) (01001101)2
1173. Conversion of (37)10 to binary:-(a) (100101)2
1174. Oil temp. measured with:-(a) Thernustors (b) Thermocouple (c) Diodes (d) Temp. indicator
1175. MTCS:-(a) Zener diode used for as amplifier (b) Funnel diode used top voltage regulator(c) As in (b) and as an oscillator(d) Varactor diode is used for sketching circuits of electronic tunner
1176. Conversion of (4D)16 to binary:-(a) (01001101)2 (b) (c) (d)
1177. Conversion of (37)10 to binary:-(a) (100101)2 (b) (c) (d)
1178. MODEM is:-(a) Modulator/Demodulator (b) Software programme(c) Operating device (d) Input / Output Characteristics
1179. Pilot hole to be drilled in Plexiglas, bit used:-(a) Ordinary drill bit can used (b) Specially designed drill bit should used(c) Twist drill to be used (d) Wood bit can be used
1180. Filler material added to risen:-(a) To increase pat life (b) No improve viscosity(c) Increases strength (d) All of the above
1181. Drift induced angle:-(a) 300 (b) 450 (c) 600 (d) 900
1182. MCS:-(a) Cold Water quenching minimize distortion & cracks(b) Hot water quenching minimizes distortion & alienates cracks
(c) Spray quenching reduces the wear and corrosion(d) Quenching process not has considerable effects.
1183. Heat treatment of Al – alloys and after it allowed to cool for 4 to 5 days is:-(a) Natural ageing (b) Artificial ageing (c) Both ‘a’ & ‘b’ (d) Room temp of alloys
1184. In series of drill size, most accurate drill is:-(a) A to Z (b) Fractional (c) No. 80 to No. 1 (d) Any one above
1185. What size of hole to be drilled, worm thread, have 2TPI:-(a) 2.334 (2.3134) (b) 2.3144 (c) 2.3212 (d) 1.564
1186. Most important factor which affects the indication of dye – penetrate inspection check is:-(a) Not proper application of Dye (b) Not proper application of penetrate(c) Parts are not thoroughly degaussed & cleaned (d) All of the above
1187. Hooks panner used for:-(a) Round nuts and having notches on outer edge(b) Square nuts and having of hole on outer periphery(c) Hexagonal nuts having holes (d) None of the above
1188. In hardness testing, Barcol tester used for:-(a) Stainless steel (b) Magnesium (c) Cu & Brass & Al alloy (d) Hard materials
1189. Which of the following is primary cell:-(a) Lead acid (b) Silver zinc (c) Carbon zinc (d) Nickel cadmium
1190. Negative plate of Ni – Cd battery is:-(a) KOH, hydroxide (b) Cadmium sulphate (c) Cadmium hydroxide (d) Nickel chloride
1191. Which of the following is incorrect:-(a) Wings slanted with lateral axis is dihedral angle(b) Chord of the wing to relative wind is called angle of attack(c) Longitudinal axis of a/c & chord of aerofoil is angle of incidence(d) Angle of attack is angle between chord & speed of a/c(e) All are incorrect
1192. Wing aspect ratio is:-(a) Wing span/ Average chord (b) b2/areas (c) b2/area2 (d) All of the above
1193. Rubber hose are identified by:-(a) Inside dia (b) outside dia (c) outside dia and its length (d) Its size and dia
1194. AN steel flared tube end fittings:-(a) Black (b) Red (c) Brown (d) Blue
1195. Double flared end fittings is for:-(a) Ease of construction (b) To resist shearing effect imparted on tubes(c) To resist for concentric on the tube flares (d) To take and withstand shock load on tubes
1196. Taper pin used for:-(a) Shear pad (b) For good play between joints
(c) For flexibility (d) Good rigidity and slackness
1197. In treatment on metals, metalizing is the process(a) Anodizing of the surface to protect (b) Layer of pure Al on steel(c) Al, Cu, Zn sprayed from pistol on the metal surfaces (d) All of the above
1198. Flap tab is:-(a) Servo tab (b) Balance tab (c) Trim tab (d) None above
1199. Removal by water washing of water should dye penetrate is:-(a) Spraying of water jet directly (b) Cleaned with wet cloth(c) Dye penetrate process involves (d)
1200. Crinkle washer used for:-(a) Where continuous vibration load (b) Lightly load application and for electrical use(c) Where wear of metals is the factor (d)
1201. MCS, related to ATA 100 code:-(a) No – 30, is light (b) No – 33, is hydraulic(c) No. 61, propeller (d) Both ‘a’ & ‘c’ are correct
1202. Which is important factor related fuel jettison of a/c:-(a) Fuelling accomplished at the end through of wing tip(b) Fuelling accomplished at outer board of wing side(c) Fuelling jettison should be accomplished within 10 minutes(d) Make precaution that there is no fine hazard
1203. Important consideration regarding pressure fuelling of a/c(a) minimizes the time required for fuelling (b) Keeps the a/c weight within limit(c) Minimizes the chances of fuel contamination (d) Reduces the chances of radio hazard (skin effect)
1204. Pressure fuelling method, important precaution should be taken:-(a) The pump pressure must be minimum (b) The pump pressure should be correct(c) The a/c elect. System must indicate the gauge reading (d) The a/c should be grounded
1205. MCS related to thickness of sheets:-(a) No. 1 SWG is smaller than 9 No. SWG (b) Thickness of 18 SWG is smaller than 16 SWG(c) Thickness of 14 SWG is more than 18 SWG (d) Thickness of 18 SWG is smaller than 14 SWG
1206. Term CPCP means:-(a) Corrosion prevention and control programme (b) Corrosion programme and control programme(c) Corrosion prevention and corrosion problem (d) Control programme and corrosion prevention
1207. Fuel designation above grade – 100 is:-(a) It is iso – heptanes rating in fuel (b) by performance number(c) (d) Its performance numbers
1208. MCS related to Bearings:-(a) Bearing should stored horizontally & re protected once in a year(b) Slight corrosion on outer race of bearing is allowed(c) Shielded bearing should be inspected for corrosion (d) All are correct
1209. MCS(a) Roller bearings takes thrust (b) Radial bearings are used for shaft gears etc.(c) Ball bearings withstand heavy radial loads (d) All above correct
1210. While demagnetize the parts:-(a) By passing sufficient A.C. into the field (b) By passing a.c. slowing out to the magnetic field(c) By repeatedly apply a.c. over the part (d) Increasing the strength of magnet then cutout a.c.
1211. Repair of the crack in the weld is done by(a) Butt weld (b) Edge joint (c) Lap joint (d) Roselle Weld
1212. Blacksmith anvil is made up by:-(a) Casting and machining (b) Extrusion (c) Forging (d) Both ‘b’ & ‘c’ correct
1213. For soft metals, drill angle is:-(a) angle may increased (b) angle may decreased(c) angle will be more than the normal (d) angle is more or less
1214. The hole drilled have rough surface cause is:(a) The drill will be dull (b) The drill speed is slow, as large heat produced(c) the drill speed is higher (d) Both ‘a’ & ‘b’ above
1215. Plain washers are used for:-(a) For gripping (b) For torquing(c) For insertion of cutter pin in hole (d) All are incorrect
1216. MCS:-(a) Corrosion on Al, have etching and pitting (b) Corrosion on Cu, have greenish film(c) Corrosion on Mg, have etching and pitting (d) All are correct
1217. Which is correct (a) Pitot pressure fed to the interior of capsule(b) Static pressure fed directly to outside of the capsule(c) Pitot & static pressure difference directly measured on the gauge(d) All above correct
1218. Smallest reading of micrometer is Nickled with(a) Low magnification (b) High magnification(c) High or low magnification (d) can easily readable
1219. Un doubtfully wrought alloys:-(a) Cylinder head (b) Crank shaft (c) Cam head (d) Al clad sheet
1220. Mark correct statement, at time of fuelling of a/c:-(a) Aircraft should be grounded through lines by carbon embedded in tire(b) Drag chain connected to fuel truck(c) Bonding is connected between a/c, fuel truck to the fuel filter (d) All of the above
1221. Dies are used for:-(a) Cut external threads – on round stock(b) made-up of hard tempered steel & ground to exact size(c) Both ‘a’ & ‘b’ are correct (d) To cut internal threads
1222. MCS:-(a) QNF, atmospheric pressure reads zero(b) QNH, bar metric pressure above elevation at meansealve(c) QNE, barometric pressure at altitude (d) Both ‘b’ & ‘c’ are correct
1223. Schematic diagram:-(a) Individual component do not locate in the a/c (b) Individual component to locate in the system(c) do not locate component in the system(d) are use to locate parts & assembles of parts to installation in a/c
1224. Tolerance is:-(a) Permissible variation in the mating parts (b) Variation of dimensions (c) Difference between upper & lower dimensions (d) It is clearance between the hole and bolt
1225. Fretting corrosion:-(a) Between skin & rivet around a hole (b) Black pits of deposits(c) Both ‘a’ and ‘b’ above (d) It is not visible around the cracks & holes
1226. Quality and quantity of X – rays is:-(a) Intensity and penetrating power (b) Frequency and intensity(c) There is no quality but intensity is there (d) Brightness and penetrating power
1227. MCS, relative to jacking of a/c:-(a) Nose of a/c to direction of Wind (b) Tall of a/c should be backward direction of wind(c) as in ‘a’, the surface should be level & concreate (d)
SET 30 1228. Which is unpaired?
(a) dye penetrant – capillary acceptance (b) ultrasonic test – peizo electricity(c) eddy current test – current acceptance (d) magnetic test – skin test
1229. Which has increasing order of strength?(a) 2S, A14ST, 17ST, 24ST (b) 2S, 24ST, 17ST, A17ST(c) 2S, 17ST, 24ST (d) 2S, A17ST, 24ST, 17ST
1230. The static vents with the flat surface plate at two position to(a) minimize position error (b) have is formation freedom(c) both a & b (d) None
1231. The maximum radius for bending of Al – alloy should be(a) 3 times the sheet thickness (b) 6 times the sheet thickness(c) 9 x sheet thickness (d) 10 x sheet thickness
1232. In SAE – 1030, carbon percentage is(a) 30% (b) 9.5% (c) 10%
1233. Magnetic particle inspection (MAP) can be done when flow is(a) at or near the surface (b) one or in depth of surface(c) near or in depth of surface (d) all
1234. Electroplating provides
(a) corrosion resistant surface (b) wear resistant surface(c) both a & b (d) none
1235. Figure shows(a) NOR gate (b) OR gate (c) XOR gate (d) none
1236. Manifold pr gage shows the pr. when it is not open:(a) atmospheric pr (b) manifold pr
1237. Rockwell hardness tester measures the(a) resistance to penetration (b) dia of penetration(c) both ‘a’ & ‘b’ are correct (d) none of the above is correct
1238. Factor include in radiographic exposure
(a) material thickness and density (b) type of defect to be inspected(c) type of X – ray machine used and (a) and (b) are correct (d) only ‘a’ and ‘b’ are correct
1239. Which are used as a filler material?(a) boron (b) cellusosic material (c) polyester resin (d) epoxy resin
1240. Reinforcing fiber(a) When combined with the matrix, give primary strength to the composite structure
1241. In case hardening nitriding process:(a) With the part this heated ammonia gas is circulated within the furnace chamber
1242. In digital multi meter, setting is(a) low (b) shunt is used (c) zero (d) changes according to range of switch
1243. Conversion of (4D)16 to binary
1244. Conversion of (37)10 to binary
1245. Blacksmith anvil is made up by(a) casting and machining (b) extrusion (c) forging (d) both ‘b’ & ‘c’
1246. Identify the figure concerning a drill(a) cutting edge (b) cutting angle (c) flute (d) cutting plane
1247. Titanium is used in jet engines of high speed a/c because (a) It is ductile and wear resistant (b) It is wear resistant retains its properties below 5000C(c) It is wear & corrosion resistant and does not retain its strength above 5000C
1248. Room temp aging is otherwise known as(a)
1249. AN 121110 indicates(a) bolt with 6/8 dia & head is drilled
1250. Mark the correct statement:(a) turbo fan engine require lesser runway length for take off that jet engine(b) Jet engine, at higher altitude is efficient in comparison with piston engine(c) Jet engine has more weight to get equivalent power(d) Turbo jet engine requires longer runway
1251. The process capacity of a computer is determined by(a) MHZ (b) KHZ (c) RAM (d) Frequency
1252. T6 indicates (9A – 200)(a) artificially aged only (b) SHT and cold worked(c) SHT and their artificially aged (d) Solution heat treated
1253. If Z is impedance, r is internal resistance and R is external resistance, then(a) Z = R + r (b) Z2 = R2 + r2 (c) Z = R2 + r2 (d) None
1254. Unit of radioactivity is(a) Rutherford scan (b) Bequirel (c) Both ‘a’ & ‘b’ (d) None
1255. (110)2 is binary of decimal(a) 3 (b) 5 (c) 6 (d) 7
1256. End of steel bar sometimes painted in various colors and color combination as a mean of identifying different grade of steel
(a) Solid colors identify the alloy and strips identify the carbon contents(b) strips identify the alloy and solid colors identify the carbon content(c) both ‘a’ & ‘b’ (d) none of the above
1257. Highest size of drill is (9A – 540)(a) No. 80 (0.0135) (b) 3/16 (0.1875) (c) 3.75 mm(0.1475) (d) E (0.2500)
1258. In towing the a/c (light) mark the correct statement(a) all tail wheel a/c towing towards backward (b) all nose wheel a/c towing towards backward(c) if steerable nose wheel a/c, locking scissors are set full swivel position(d) none of the above
1259. Which core material gives deflection in composite(a) honey comb (b) synthetic resin (c) foam (d) all
1260. Interpretation analysis of defect in PFD indicates(a) extent of staining
1261. In PFD, when used fluorescent, material color of defective part and sound part is(a) brilliant yellow – green and blue violet (b) brilliant yellow – green and bright red(c) bright red and blue violet (d) none of the above
1262. Pressure of gas on acetylene welding is depend upon(a) area of welding surface (b) type of material being welded(c) as the welder will want (d) none
1263. Mark the incorrect statement(a) ultrasonic inspection …………….. piezo electric effect (radiography)(b) MPI …………………. Skin effect (ultrasonic)(c) Eddy current ……………. Current acceptance(d) PED ………………… capillary action
1264. If no marking of drill, identification of drill can be measured by drill gauge having
(a) fraction on right and no. on left (b) fraction on left and no on right(c) both ‘a’ & ‘b’ (d) none of the above
1265. Dia of rivet is (15A)(a) 2 times of thickness of sheets (b) 3 times of thickness of thickest sheet(c) 3 times of thickness of joint sheets (d) equal to grip length
1266. Extension tap is used for(a) cut full threads in blind hole to bottom (b) cut the thread in deep hole(c) thread cuts on long shaft (d) all of the above
1267. Lift and drag depends upon(a) more cambered area of upper side and less of lower side of wing(b) more cambered area of lower side and less on upper side(c) both ‘a’ & ‘b’ (d) none
1268. Color of extruded bar of aluminum alloy in 5 inches is(a) red marking near the end of each length (b) blue marking near the end of each length(c) stamp of blue and white color (d) none of the above
1269. What size of the hole should be bored before cutting a 2.5” internal acme thread having 3 thread per inch(a) 2.5” (b) 2.1667” (c) 3.5” (d) 2.75”
1270. Dis – integrator is used to(a) making hole in conductive metal (b) making hole in non – conductive job(c) making hole clearly and fairly (d) both ‘a’ & ‘c’ are correct
1271. Binary equivalent of (296)10 is:(a) (100101000)2
1272. Decimal equivalent of (111011)2 is:(a) (59)10
1273. The piston engine works on(a) Boyle’s law (b) Brayton cycle (c) Charle’s law & otto cycle (d) Both ‘a’ & ‘c’
1274. The soldering of Al – alloys differs from other metals due to(a) high heat expansion and contraction (b) greater heat input(c) uneven expansion and contraction (d) all
1275. The modulation in which, amplitude is kept constant and frequency is changed is called(a) amplitude modulation (b) space modulation(c) frequency modulation (d) phase modulation
1276. After honeycomb repair, the moisture entrapment is inspected by(a) radiography (b) ammeter (c) laser holography (d) all
1277. In uniform fluid flow, the fluid is first made to flow through a tube and the pressure exerted by the fluid is measured by(a) dynamic pressure (b) static pressure (c) reynold’s no. (d) all
1278. PARKETON is used for protection of
(a) steel (b) numinium (c) Mg (d) As in ‘a’ and cable
1279. The rust and corrosion is removed from highly stressed steel parts by(a) abrasive paper (b) fine buffling cloth on buffling wheel(c) wire brush (d) all
1280. Centre drill is used to produce(a) short hole and CSK hole (countersunk) (b) short hole and large hole(c) both ‘a’ & ‘b’ (d) none
1281. During repair procedure of composite part treatment is done for(a) small disbands (b) restore surface protection(c) seal honeycomb casting (d) none
1282. Synthetic rubber used in the aircraft is designated GRM as(a) poly sulphide polymer (b) isobutylene(c) complex of butylenes and cresylonitrile (d) government rubber mono – vinyl acetylene or neoprene
1283. Close tolerance bolt is identified by(a) triangle marking on head (b) crossed triangle marking on head(c) circle marking on head (d) triangle on head with plus marking within it
1284. Piston engine’s mechanical efficiency differs due to(a) difference of pressure (b) difference of temperature(c) difference of grade of fuel used (d) difference in mass of fuel
1285. Charge stored in capacitor varies:(a) directly with area and voltages (b) directly with area and distance between plates(c) directly with distance between plates
1286. For full power, full wave rectification:(a) Two diode are used (b) 4 diodes are used (c) either 2 or 4 diodes can be used
1287. The dimensional inspection of a bearing in rocket arm can be accomplished by:(a) depth gage and micrometer (b) telescoping gage and micrometer(c) thickness gage and push – fit arbor
1288. RAM (Random Access Memory) is:(a) non – volatile semi – conductor memory (b) read/ write volatile semi – conductor memory
1289. Which of the following rivet has no marking on its head?(a) B (b) F (c) M
1290. Lamination core of transformer provide:(a) low reductance for magnetic flux
1291. Welding tip is selected on the:(a) thickness or the metal
1292. Synchronization alternator:(a) two or more alternator to the some they must have same phase sequence as well as equal voltage and frequency
1293. Zinc primer give:(a) corrosion resistance surface and base provide
1294. Honeycomb has:(a) high strength to wt ratio
1295. Satisfactory magnetic flux in specimen is known by(a) thin soft material in which crack has been artificially induced (b) by ammeter(c) by voltmeter (d) none
1296. Mark the correct statement about cable(a) on diameter of wire, length is dependent (b) strands are laid to build up a cable(c) sized by no. of stands multiplied by no of wires in each strand (d) all of the above
1297. Buckling of plastic during stopping prevented by(a) storing titled 10 degree from vertical in proper bin with the wrapping with masking tape(b) strong horizontally with masking paper tape as protective means with height not exceeding 18”(c) all the above
1298. Red brass is used(a) for fuel and oil line fittings (b) as in ‘a’ and also called bronze(c) as in ‘b’ and poor casting and forming quality (d) none
1299. Nickel in steel increases(a) hardness (b) yield strength (c) elastic limit (d) ATA
1300. Geiger counter is used to(a) measure the radio active contamination of a/c flying above stratosphere(b) check the condition of a/c after heavy landing(c) check the penetration of a/c by ultraviolet rays above(d) NTA
1301. Stalling angle critical angle of attack is the(a) max. lift angle (b) min. lift angle(c) as in ‘a’ and at which separation of airflow takes from upper surface of wing(d) as in ‘b’ and at which separation of airflow takes from lower surface of wing
1302. Angle of ACME thread is(a) 450 (b) 380 (c) 120 (d) 290
1303. Al. alloy rivets can be heat treated(a) max. 5 times (b) max. 15 tiems (c) infinite times (d) none
1304. The type of compressor used in air cycle cooling machine is(a) axial compressor (b) inward flow compressor(c) outward flow compressor (d) none
1305. MTCS:(a) Al – alloy bolts of dia less than ¼ mm are not used in primary structure(b) All Al – alloy nuts and bolts are used where frequent removal is required
(c) Both ‘a’ & ‘b’ are correct (d) None of the above
1306. MTCS(a) lap joint is best for oxy – acetylene welding (b) single lap joint is resistance to shearing(c) single lap joint is resistance to bending (d) all of the above are wrong
1307. Aircraft structural CRS is welded by(a) butt welding (b) spot welding & sea welding(c) butt and spot welding (d) spot welding
1308. Precision wire wound resistors are wound with(a) carbon (b) copper (c) magnesium (d) all of the above
1309. Which non – ferrous metal can be case - hardened?(a) Ni (b) Ti (c) Cu (d) Al
1310. Turn buckle is(a) for minor adjustment in cable length and cable tension(b) has matching left and right hand threads(c) has internally threaded ends and externally threaded end terminals(d) all of the above
1311. Generator frequency depends on(a) no of poles (b) RPM (c) Both ‘a’ & ‘b’ (d) None
1312. In a PN junction diode, holes move from P – region to N – region because of(a) diffusion (b) pressure difference(c) higher concentration of holes in P – region (d) electrons in N – region attracts holes from P - region
1313. Pot life and shelf life(a) pot life is related to mixed resin mixture which shelf life is related to resin and hardened individually(b) if catalyst is mixed in less amount then it will increase pot life but reducing curing properties(c) both ‘a’ & ‘b’ (d) none
1314. Octal no. of 189 is(a) 235 (b) 237 (c) 265 (d) 275
1315. 10 KB – 105 rivet has(a) flat head (b) countersunk head (c) as in ‘a’ & key (d) as in ‘b’ and key
1316. 10 KB – 107 rivet has(a) flat head (b) countersunk head (c) as in ‘a’ & key (d) as in ‘b’ and key
1317. In Bristol modified method, defect occurs as(a) white line (thin) (b) green line on dark (c) red line none of the above
1318. In oil and chalk process, defect occurs of(a) dark gray line on light surface (b) dark line on red back ground(c) green line on dark background (d) none of the above
1319. Inter granular corrosion(a) occurs along grain boundaries (b) causes exploitation when it becomes severe
(c) as in ‘a’ and ‘b’ and detected by UFD (d) as in ‘c’ and detected EFD
1320. Porosity in steel castings is detected by(a) MPI (b) As in a but DPI is more efficient(c) both are equally efficient (d) none
1321. Scuttered acts in MPI indicates(a) fine porosity and pitting (b) welding cracks (c) tight crack (d) laps
1322. Variable canvery pump is used where(a) output does not change with requirement of engine (b) output varied as per engine requirement(c) as in ‘a’ and fitted with no valve(d) as in ‘c’ and fitted with compensated valve for automatic adjusted
1323. Ventral provides(a) longitudinal stability (b) longitudinal and lateral stability(c) lateral stability (d) none of the above
1324. Brinell hardness tester (9A – 218)(a) uses hardened spherical ball (b) as in ‘a’ and measure depth of impression(c) as in ‘b’ and measured dia of impression (d) none of the above
1325. Electric plating is the process of(a) provide corrosion resistance surface (b) provide good surface for further plating(c) for ??? (d) all the above
1326. Transferred metal by chemical action over a surface for
(a) provide corrosion resistance surface (b) provide base for further plating(c) forward up (d) all the above
1327. Acetylene gas is(a) colorless (b) as in ‘a’ and if stored 25 psi it becomes highly unstable(c) as in ‘b’ and produced by reaction of calcium carbide with water(d) as in ‘a’ and produces a yellow colored flame and smoky flame
1328. When a component exceeds the alert value(a) it should be subjected before flight (b) it should continue in flight and corrective action taken(c) it can be replaced in night or at 10 hrs whichever is earlier (d) none of the above
1329. An 12 H5 indicates
(a) dia 3/5 and head is not drilled (b) dia 6/8 and head is not drilled(c) dia 6/8 and head is drilled (d) dia 6/8 and shank & head is drilled
1330. Grub – screw is used for
(a) locking threaded fasteners (b) by soldering it is locked(c) locked by peening (d) both ‘a’ & ‘c’
1331. MTCS
(a) carbon graphite has more compressive strength than Kevlar(b) Kevlar has more compressive strength than carbon graphite(c) Carbon graphite has more tensile strength than Kevlar (d) all of the above
1332. When re – torqueing is required for a ???
(a) re – tighten the nut without backing off the nut
(b) re – tighten the nut with backing off the nut one turn(c) re – tighten the nut with backing off two turn (d) never re – tighten the nut
1333. When in a/c it is required embossing, etching and marking, then electrical etching is done by
(a) electrical etching pencil, if applied lightly (b) electrical etching pencil but only for CRS(c) electrical etching pencil is prohibited in a/c (d) both ‘b’ & ‘c’
1334. Choose the correct statement
(a) Oxy – acetylene flame have more heat energy than oxy – hydrogen flame(b) Oxy – hydrogen flame have more heat energy than oxy – acetylene flame(c) Both have same heat energy
1335. An altimeter consists of:
(a) Two aneroid capsules (b) Pressure setting knob for adjusting barometric pressure(c) Three aneroid capsules (d) all are correct
1336. Mark the correct statement regarding drill:
(a) No. 80 is smaller than No. 1 (b) No. 1 is smaller than No. 80(c) Letter A is bigger than letter Z and No. 80 (d) Letter A is smaller than No. 1 and Letter Z
1337. In absence of barometer, altimeter is checked by:
(a) Micro manometer (b) Vacuum chamber (c) Vacuum gauge
1338. Static vents in pitot static system are located with:(a) Free at air stream (b) To eliminate ice formation(c) Flexible (d) Both ‘a’ & ‘b’
1339. X – ray used in NDT inspection have:
(a) Short wave length and high penetrating power (b) Short wave length and short penetrating power(c) High wave length and short penetrating power (d) High wave length and high penetrating power
1340. To repair a crack, the joint to formed:
(a) Lap (b) Butt (c) Tee (d) Corner
1341. Dzus fastener identification includes: (a) Head type (b) Diameter & head style (c) Head style, dia & length (d) None
1342. Interrupt flux will cause for:
(a) Corrosion (b) Weak weld (c) Lack of penetration (d) Porosity
1343. Mark the correct statement: (a) Angle between chord line and longitudinal axis is called incidence angle(b) Angle between chord line and longitudinal axis is called angle of attack(c) Both ‘a’ & ‘b’
1344. Mark the correct statement:
(a) Output will be high if any one of the input become high for AND gate(b) Output will be high if any one or all of the input become high for OR gate(c) Output will be high if all of the input will be low for AND gate (d) None
1345. Purpose of using flux in welding is to:
(a) Reduce oxidation (b) Increase the bending (c) Provide flow to the (d) All
1346. Rockwell tester measured: (a) Resistance to penetration (b) Diameter of impression(c) Size indentation (d) None
1347. Aluminum alloys are welded with:
(a) Oxidizing flame (b) Reducing flame (c) Neutral flame(d) Reducing flame but first the flame is neutral and then reduced
1348. Which hammer is used for riveting?
(a) ball pin hammer (b) straight pin hammer (c) cross pin hammer (d) riveting hammer
1349. While jacking one wheel of an aircraft: (a) tripode – type jack is used (b) a/c should be raised 6” to 8” above the ground(c) the remaining wheel should be chocked properly (d) all are correct
1350. Choose the correct statement regarding towing:
(a) a/c equip with tail wheel and towed generally from forward(b) nose wheel a/c are generally towed from forward.(c) nose wheel steering should be set to full steer position(d) all are correct
1351. The voltage of an Ni at battery cell is
(a) - (b) -(c) -(d) -
1352. In chrome – plating process, the crisis deposited on the part from
(a) cathode (b) electrode (c) electrolyte (d) tank
1353. A gear rack when mashed issued to change (a) rotary motion to reciprocating motion (b) reciprocating motion to rotary motion(c) transmit load (d) none
1354. Metal matrix:
(a) used in a/c (b) uncommon(c) same as plastic matrix with fiber reinforecement (d) none
1355. A transfer is ________:
(a) amplify the low input signal to high output signal (b) used as a rectifier(c) used in transducer set (d) both ‘a’ & ‘c’ are correct
1356. The tool shown is
(a) flap wrench (b) die stock (c) none
1357. Barcol tester is used (a) soft material (b) steel (c) hard material (d) all
1358. Axial distance covered by a threaded fastener in one complete revolution is called:
(a) Pitch (b) Lead (c) Bolts (d) None
1359. Effect on the part by varying frequency in eddy current testing is:(a) Skin effect**************************
1360. Choose the correct statement regarding towing:
(a) a/c equip with tail wheel and towed generally from forward(b) nose wheel a/c are generally towed from forward.(c) nose wheel steering should be set to full steer position(d) all are correct