Aviation World (www.dgcaquestionpapers.in)

Aviation World (www.dgcaquestionpapers.in)

Heavy Aero plane OCT 20141. Metal fasteners used with carbon/Graphite composite structuresa) May be constructed of any of the metals commonly used in aircraft fastenersb) Must be constructed of materials such as titanium/CRSc) Must be constructed of high strength Al-Lithium alloy.

2. Which method may be used to inspect fiberglass/honeycomb structure for entrapped water?1. Acoustic emission2. X-ray3. Back lightinga) 1 and 2b) 1 and 3c) 2 and 3

3. One method of inspecting a laminated fiberglass structure that has been subjected to damage is toa) Strip the damaged area of all paint and show a strong back light through structure.b) Use dye-penetrant inspectionc) Use eddy current probe on both sides of damage.

4. What is the material layer used within the vaccum bag pressure system to absorb excess resin during curing called?a) Release b) Bleederc) Breather

5. The preferred way to make permanent repairs on composites bya) Bonding on metal or cured patchesb) Riveting on metal or cured patchesc) Laminating on new repair plies.

6. Same question (5) repeated with an extra option.7. Which of the following are generally characteristic of aramid fiber (kevlar) composites?a) High tensile strengthb) Flexibilityc) Both a and b

8. Which is considered good practice about installation of acrylics plastics?a) When rivets are used, adequate spacer or other means to prevent excessive tighting to the frame to the plastics should be avoided.

9. Which is the most common method of cementing transparent plastics?a) Heat methodb) Soak methodc) Bevel method

10. When holes are drilled completely through Plexiglas,a) Specially modified twist drill should be used.

11. Black smoky residue streaming back from rivetsa) Fretting corrosion is occurring between rivets and skin.

12. An airplane has good longitudinal stability. It should have min.tendency to a) Pitch b)Roll c) yaw

13. Angle of incidence definition a) A line parallel to the wing chord and a line parallel to the longitudinal axis of the aircraft.

14. The elevators of a conventional airplane are used to provide rotation abouta) Longitudinal axis b) lateral axis c) vertical axis

15. If the wing of a monoplane is improperly rigged to a greater angle of incidence than designed ,it will causea) Airplane to be off balance both laterally and directionally.b) Airplane to pitch and roll about lateral axisc) Right wing to have both increased lift and drag.

16. The purpose of wing slata) Reduce stalling speedb) Decrease dragc) Increase speed on takeoffd) Both a and c

17. When used near magnetic compass, cotter pins are made ofa) Anodized Al alloy b) Corrosion resistance steel c) Cd plated low carbon steel

18. A tension regulator in the flight control cable system of large all metal aircraft is toa) Provide a means of changing cable tension in flightb) Retain a set tensionc) Increase a cable tension in cold weather.

19. where is fuselage station 183 locateda) 183 cm aft of zero datumb) 183 inch aft of zero datum/reference linec) 18.3 inch aft of zero datum

20. Yaw damper controls the adverse yaw by movinga) Rudder in the direction same as that of pedal movementb) Opposite to the direction of movement of rudder movement.c) In the direction of control stick movement.

21. During weight and balance check of heavy airplane the most adverse condition can be achieved by loading the aircraft in a) Max.gross weightb) Forward adverse conditionc) Rearward adverse conditiond) All the above.

22. Oxygen plumbing tubes will havea) Green bands at specified intervals throughout plumbingb) Blue bands at specified intervals throughout plumbingc) Green and yellow bands at specified intervals throughout plumbing

23. What precautions should be taken during inflating aircraft tires?a) Use tire cage guard to avoid possible in possible injuriesb) Always inflate aircraft tires with Nitrogenc) When HP regulator is used, practice safety precautions.d) All the above

24. The preload pressure of the accumulator will be ______ as the system pressurea) Same b)twice c)One third d)half

25. Among the following , which one is correct sequence of bonding a) Ground or bond the aircraft together then ground to aircraft and truck to ground

26. The crack detection method which is used to find the defects developed in such parts as turbine shaft, vanesetca) Magnetic inspectionb) Liquid penetration methodc) Eddy current methodd) Ultra sonic test27. In vapor cycle system, cabin air loses heat and get cooled when passing through a) Evaporatorb) Condenserc) Expansion valve

28. In heavy aero plane, Engine mounts are made up ofa) chromium molebdenum steelb) nickel- chrome steelc) forging of chrome-molebdenum steeld) All the above

29. MTCS regarding Sweep back winga) Angle between a line perpendicular to the fuselage center line and quarter chord of each wing aerofoil sectionb) Sweep back in combination with dihedral causes the dihedral effect to be excessive.c) Reduced sweep of wing into wind results in increased lift.d) All the above.

30. Maneuverability is thea) Ability of an aircraft to be directed along a desired flight path and to withstand the stresses imposed.

31. In Power brake systems, brake bleeding method used isa) Gravity bleedingb) Pressure bleedingc) Top-up bleedingd) Pot bleeding

32. Which is the direct factor of stallinga) Angle of attackb) Angle of speedc) Aerofoil speedd) All the above

33. The deformation on an object due to stress is calleda) Strain b) compression c) loop stress

34. When the aircraft is on ground, all positive pressure in the cabin is discharged out bya) Outflow value b) positive pressure valve c) Dump valve d) safety valve

35. The design which allows the operation of a component when one member of a complex structure fails, some other member would assume the load of the failed component is calleda) Fail safe b) safe life c) Damage tolerant

36. MS20426AD-4-4 specificationa) Universal head 2017, 1/8 D,1/4 Lb) 100degree countersunk ,2117, 1/8 D, Lc) Both a and b

37. Depth of a scratch found on a windshield is measured bya) Optical micrometer

38. The check carried out to determine whether the aircraft components are properly aligned or nota) Rigging check b) Alignment check c) Symmetry check

39. The ground power unit providesa) Constant current, varying voltage DC supplyb) Constant voltage DC supply & Direct currentc) 400 Hz,3 phase , 115V AC supplyd) All the above

40. If the aircraft accelerates to eastern heading, compass will indicate a) Apparent turn towards eastb) Apparent turn towards Northc) Apparent turn towards south

41. Which valve installed in hydraulic system will have the highest pressure settinga) Thermal relief valve b) pressure relief valve c) Main relief valve

42. A hydraulic pump is a constant displacement type pump if ita) Provide an unregulated constant pressureb) Provides a continuous positive pressurec) Delivers a uniform rate of fluid flow

43. A pressure operated flow control valve in hydraulic system which is used to operate two components in a sequence after completing one component actuation.a) Priority valveb) Sequence valvec) Orifice check valve

44. In an aircraft all three hydraulic system pressure became low in flight due to engine failure. Emergency pressure is supplied to the system automatically bya) Electric Motor driven pumpb) EDPc) Accumulator pressure

45. In tri-cycle landing gear system , aircraft is towed bya) Towed forward by connecting tow bar in Nose wheel

46. Static friction test is related toa) Aircraft electrical systemb) Landing gear systemc) Nose wheel steering system.

47. MTCS regarding Distance Measuring equipment (DME)a) Provide a constant visual indication of the distance of the aircraft from a ground station.b) Operated in UHF range of radio frequency spectrumc) .d) All the above

48. The point in a boundary layer at which laminar airflow changes to turbulent flow is known as a) Transition Point

49. For fast detection of fires, which fire detector(s) is/are useda) Rate of rise typeb) Radiation typec) Overheat detectorsd) All the above

50. The semi-monocoque fuselage is constructed primarily of the alloys ofa) Duralumin b) Aluminum C) Aluminum and magnesium d) titanium

51. After welding steel tubes, it is heated above its upper critical point and allowed to cool in air to relieve internal stress. This process is called?a) Tempering b) Hardening c) Annealing d) Normalizing

52. In subsonic flow, when passes through a convergent duct, its Pressure_________ Velocity ______ and density _________ a) Increases, decreases, remains sameb) Decreases, increases, remains samec) Decreases, increases, decrease.

53. Seals used in Oil hose, tank linings for aromatic aviation gasoline, gaskets..etc are made up ofa) Buna-N b) neoprene c) Thiokol

54. Corrosion treatment in Aluminum to improve paint bonding quality a) Alodizing b) Anodizing c) Alclad d) All the above

55. Which valve is used to isolate normal hydraulic power and allow emergency pneumatic power to operate brakes?a) Shuttle valve b)isolation valve c) check valve

56. In capacitance type fuel quantity gauge, capacitance of fuel dependence upona) Area of platesb) Length of the platesc) Area of the tankd) All the above

57. Aircraft that has flown through severe turbulence should be inspected forA) Wing to fuselage joint, tail to fuselage joint, engine mountings and all areas which are expected to have bending loads.

58. Same question (57) but different set of optionsa ) Inspect for Wrinkles in aircraft skin

59. Steer damper is used apart from Steering a) shimmy dampening

60. To prevent rapid extension of an oleo shock strut, after initial compression resulting from landing impact

a) Various types of valves or orifices are used to restrict the reverse fluid flowb) the air is forced through a restricted orifice in reverse directionc) The metering pin gradually reduces the size of the orifice as the shock strut extends.

61. Power boost brake systems are used on aircraft that have a) High landing speedsb) Low normal hydraulic system pressurec) More than one brake assembly per axle.62. An automatic dampening action occurs at the steer damper if for any reason the flow of high-pressure fluid is removed from thea) outlet of the steer damperb) inlet of the steer damperc) Replenishing check valve.63. If the extended longitudinal axis of the main landing gear wheel assemblies intersects aft of the aircraft, the wheels can be termed as havinga) Toe-Inb) Toe-Outc) Negative camber

64. The rubber seals used in a landing gear shock strut a) Are generally designed to be compatible with more than one type of fluid.b) Are kept from direct contact with fluid by Teflon or back up ringsc) May be used only with a specific type of fluid.

65. Chines are used on some aircraft nose wheel tires to a) Help nose gear extension at higher air speedsb) Help reduce the possibility of hydroplaningc) Help deflect water away from the fuselage.

66. on most aircraft, the oil level of an air and oil shock strut is checked bya) Removing the oil filler plug and inserting a gauge.b) Measuring the length of the strut extension with a certain air pressure in the strut.c) Releasing the air and seeing that the oil is to the level of the filler plug.

67. An aircraft pneumatic system, which incorporates an engine driven multistage reciprocating compressor, also requiresa) An oil separatorb) A surge chamberc) A moisture separator.

68. In an air cycle machine, moisture and water in the bleed air is collected after downstream of the expansion turbine a) Water separator

69. Engine bleed air is conditioned before entering to aircraft cabin by____________ machinea) Air cycle b) Vapor cyclec) Otto cycle

70. Phosphate ester base hydraulic fluid is very susceptible to contamination froma) Teflon seal materialb) Ethylene-elastomersc) Water in atmosphere

71. Which of the following lists only desirable properties of a good hydraulic fluid?a) Low viscosity, chemical stability, high flash point, high fire point

72. The primary function of the flap overload valvea) Prevent flap from being lowered at airspeeds which would impose excessive structural loads.

73. If an a/c constant pressure hydraulic system cycles more frequently than usual and no fluid leakage can be detected, the most probable cause isa) A too high relief valve setting c) low accumulator preload b) A pump volume output too high

74. In an aircraft, thermal relief valve is set to open at aa) Higher pressure setting than pressure relief valve

75. Most variable displacement hydraulic pumps of current designa) Contain a built-in means of regulating system pressure.

76. The air that is expended and no longer needed when an actuating unit is operated in a pneumatic system isa) Exhausted or dumped, usually overboard.

77. In a typical high pressure pneumatic system, if the moisture separator does not vent accumulated water when the compressor shuts down, a likely cause is a a) Saturated chemical dryer b) Malfunctioning pressure transmitter b) Malfunctioning solenoid dump valve.

78. Which is generally used in pressurized aircraft as an emergency back up of Oxygen that is efficient and require least maintenance?a) Chemical oxygen candle c) high pressure O2 systemb) Low pressure O2 system

79. The condition of the refrigerant as it enters the condenser of a vapor cycle system will be of _______pressure_________?a) High, liquid c) High, vaporb) Low, liquid

80. The electronic type fuel quantity indicating system consists of a bridge cicuita) An amplifier, an indicator, and a tank unitb) A tank, an amplifier, an indicatorc) A tank unit, a tank, an amplifier

81. What will be the indication in cockpit during landing gear operation?a) Red for unsafe gear, green for down and locked, No light for up & locked

82. In a brake antiskid system, when an approaching skid is sensed, an electrical signal is sent to the skid control valve whicha) Relieves hyd.pressure from brakesb) Acts as a bypass for the de-booster cylinders c) Equalize the hyd.pressure in adjacent brakes.

83. An antiskid braking systems are generally armed bya) A centrifugal switch b) a switch in the cockpit

84. A typical take off warning indication system, in addition to throttle setting, monitors the position of a) Elevators, speed brakes, flaps, horizontal stabilizer trim.

85. In antiskid system, wheel skid is detected bya) A sudden rise in brake pressure c) a discriminatorb) An electrical sensor

86. When an airplanes primary flight control surfaces are set for a particular phase of flight, such as landing or take off, the corresponding control-surface indicating system will showa) Trim position

87. When a landing gear safety switch on a main strut closes at lift off, which system is deactivateda) Landing gear position system c) Antiskid systemb) Aural warning system

88. What maintains normal windshield temperature control in an electrically heated windshield system?a) Thermistors

89. MTCSa) Horizon bar is below the miniature aircraft during climb

90. When the movable horizontal stabilizer moves upward, aircrafta) Nose up b) Nose down c)straight path

91. Elevator is moved up with the help of trim tab for Nose up, trailing edge of the tab will bea) Upwards relative to the surface.

92. Regarding engine nacellea) Is used to enclose the engine in a streamlined housing to improve the aerodynamics of the aircraft, to support and protect engine.b) Some aircraft have landing gears which retracts into engine nacellec) .d) All the above.

93. In semi-monocoque construction , primary bending loads are taken bya) Longerons

94. When the rivet is excessively strong in shear, what occurs in the sheet metal at the edge of the rivet hole?a) Bearing failure

95. During high speeds, in large transport aircraft a) Outboard ailerons are locked, only inboard ailerons operates.

96. Lightening protection in compositesa) If it is not there, resin will evaporate from core.

97. A tab which does not move along with flight control surfaces on flighta) Trim tab c) servo tabb) Balance tab d)spring tab

98. In a turn buckleA) Wrap the remaining length of safety wire min. four turns around the shank. (AC-9A page 149 )

99. Brake venting

Reference1. Jeppsen airframe text book2. Jeppesen test guide3. AC 65-15A4. AC 65-9A5. AMR6. Aircraft basic scienceShare your documents with us at (aviatorslinks@gmail.com) DownloadOur Mobile App For Recent PapersPage 1