According to Principle of Conservation of Energy,

8/12/2019 According to Principle of Conservation of Energy,

1/100

According to principle of conservation of energy,

the totalmomentum of a system of masses in anydirection remains constant unless acted upon by

an external force in that direction

A. True B. False


2/100

A. True B. False


3/100

The friction experienced by a body,

when in motion , is known as

A, rolling friction

B, dynamic frictionC, limiting friction

D, static friction


4/100

A, rolling frictionB, dynamic friction

C, limiting friction

D, static friction


5/100

The term force may be defined as

an agent which produces or tends to

produce, destroys or tends to

destroy motion.A. Agree

B. Disagree


6/100

A. Agree

B. Disagree


7/100

The coefficient of restitution for

elastic bodies is one

A. CorrectB. Incorrect


8/100

A. Correct

B. Incorrect


9/100

The angle of inclination of a

vehicle when moving along a

circular path_____upon its mass

A. dependsB. does not depends


10/100

A. depends

B. does not depends


11/100

The point, through which the whole

weight of the body acts, irrespective

of its position, is known as

A. moment of inertia

B. centre of ravityC. centre of percussion

D. centr of mass


12/100

A. moment of inertiaB. centre of gravity

C. centre of percussion

D. centre of mass


13/100

The loss of kinetic energy during

elastic impact is zero

A. AgreeB.Disagree


14/100

A. Agree

B.Disagree


15/100

Which of the following is a scalar

quantity?

A. Force

B. SpeedC. Velocity

D. Accelration


16/100

A. Force

B. Speed

C. VelocityD. Accelration


17/100

When a train is rounding a curve,

the side thrust on the wheel flangesis prevented by raising the outer

edge of the rail.

A. Yes

B. No


18/100

A. Yes

B. No


19/100

Frequency of vibration means the

number of cycles per second

A. YesB. No


20/100

A. Yes

B. No


21/100

The diesel engines are also known as

A. compression ignition

B. spark ignition


22/100


23/100

In a four stroke cycle, the minimum

temperature inside the enginecylinder occurs at the

A. beginning of suction stroke

B. end of suction stroke

C. beginning of exhaust stroke

B. end of exhaust stroke


24/100

In a four stroke cycle, the minimum

temperature inside the enginecylinder occurs at the

A. beginning of suction stroke

B. end of suction stroke

C. beginning of exhaust stroke

B. end of exhaust stroke


25/100

In hit and miss governing , the fuelsupply is cut-off completely during

one or more number of cycles

A. Yes

B. No


26/100

In hit and miss governing , the fuelsupply is cut-off completely during

one or more number of cycles

A. Yes

B. No


27/100

The thermal efficiency of a standard

Otto cycle for a compression ratio of5.5 will be

A.25%

B.50%

C.75%

D. 100%


28/100

The thermal efficiency of a standard

Otto cycle for a compression ratio of5.5 will be

A.25%

B.50%

C.75%

D. 100%


29/100

Theoretically, a four stroke cycle

engine should develop ____ poweras that of a two stroke cycle engine.

A. half

B. same

C. double

D. four times


30/100

Theoretically, a four stroke cycle

engine should develop ____ poweras that of a two stroke cycle engine.

A. half

B. same

C. double

D. four times


31/100


32/100

Light Weight substances can be

effective moderators.

A. TrueB. False


33/100

The higher combustion chamber

wall temperature in compressionignition engines will _____ knocking

tendency.

A. increase

B. reduce

C. not effect


34/100

The higher combustion chamber

wall temperature in compressionignition engines will _____ knocking

tendency.

A. increase

B. reduce

C. not effect


35/100

The nuclear radiators produced in areactor which must be sheilded are

A. electrons

B. neutron and gamma rays

C. none of these


36/100

The nuclear radiators produced in areactor which must be sheilded are

A. electrons

B. neutron and gamma rays

C. none of these


37/100

If the speed of the engine isincreased, the indicated power will

A. increase

B. decrease

C. remain same


38/100

If the speed of the engine isincreased, the indicated power will

A. increase

B. decrease

C. remain same


39/100

Number of working strokes per min.

for a two stroke cycle engine are

____ the speed of the engine in

r.p.m

A. equal toB. one-half

C. twice

D. four-times


40/100

Number of working strokes per min.

for a two stroke cycle engine are

____ the speed of the engine in

r.p.m

A. equal toB. one-half

C. twice

D. four-times


41/100

Segmental chips are formed duringmachiningA. mild steel

B. cast ironC. high speed steel

D. high carbon steel


42/100

Segmental chips are formed during

machining

A. mild steel

B. cast ironC. high speed steel

D. high carbon steel


43/100

Internal gears can be made byA. hobbing

B. shaping with pinion cutter

C. shaping with rack cutter

D. milling


44/100

Internal gears can be made byA. hobbing

B. shaping with pinion cutter

C. shaping with rack cutter

D. milling


45/100

Drilling is an examble ofA. orthogonal cutting

B. oblique cutting

C. simple cuttingD. uniform cutting


46/100

Drilling is an examble ofA. orthogonal cutting

B. oblique cutting

C. simple cuttingD. uniform cutting


47/100

The lathe spindles are usually made

hollow and provided with

A. internal taper

B. external taperC. internal and external taper

D. no taper


48/100


49/100

Crater wear is usually found while

machining brittle materials.



50/100

Crater wear is usually found while

machining brittle materials.



51/100

In electro-discharge machining, tool

is made ofA. brass

B. copper

C. copper tungsten alloy

D. all of these


52/100

In electro-discharge machining, tool

is made ofA. brass

B. copper

C. copper tungsten alloy

D. all of these


53/100


54/100

Ceramic tools has greater tool life

than carbide tools.

A. trueB. false


55/100

The cutting fluid mostly used for

machining steel is

A. water

B. soluble oilC. dry

D. heavy oils


56/100

The cutting fluid mostly used for

machining steel is

A. water

B. soluble oilC. dry

D. heavy oils


57/100

As the cutting speed increases, the

tool cutting forces

A. remain constant

B. increasesC. decreases


58/100

As the cutting speed increases, the

tool cutting forces

A. remain constant

B. increasesC. decreases


59/100

Soft materials can not be

economically ground due to

A. high temperature involved

B. frequent wheel cloggingC. rapid wheel wear

D. low work piece stiffness


60/100

Soft materials can not be

economically ground due to

A. high temperature involved

B. frequent wheel cloggingC. rapid wheel wear

D. low work piece stiffness


61/100

The neutral axis of the cross-section

a beam is that axis at which thebending stress is

A. zero

B. minimumC. maximum

D. infinity


62/100


63/100

Eulers formula holds good only forA. short columns

B. long columns

C. both short and long columnsD. weak columns


64/100

Eulers formula holds good only forA. short columns

B. long columns

C. both short and long columnsD. weak columns


65/100

Compression members tend to

buckle in the direction of theA. axis of load

B. perpendicular to the axis of load

C. minimum cross sectionD. least radius of gyration


66/100

Compression members tend to

buckle in the direction of theA. axis of load

B. perpendicular to the axis of load

C. minimum cross sectionD. least radius of gyration


67/100

The maximum tangential stress in a

thickcylindrical shell is always ____ the

internal pressure acting on the shell.

A. equal toB. less than

C. greater than


68/100

The maximum tangential stress in a

thickcylindrical shell is always ____ the

internal pressure acting on the shell.

A. equal toB. less than

C. greater than


69/100

Principle plane is a plane on whichthe shear stress is

A. zero



70/100

Principle plane is a plane on whichthe shear stress is

A. zero


Th h f d b di


71/100

The shear force and bending

moment are zero at the free end of

a cantilever beam, if it carries aA. point load at the free end

B. point load at the middle of its length

C. uniformly distributed load over the whole

length

D. none of the above


72/100

The shear force and bending

moment are zero at the free end of

a cantilever beam, if it carries aA. point load at the free end

B. point load at the middle of its length

C. uniformly distributed load over the whole

length

D. none of the above

A rod of enclosed centrally in a tube and


73/100

y

the assembly is tightened by rigid

washers, if the assembly is subjected to

a compressive load then

A. rod is under compression

B. tube is under compressionC. both rod and tube are under

compression

D. tube is under tension and rod is undercompression

A rod of enclosed centrally in a tube


74/100

y

and the assembly is tightened by

rigid washers, if the assembly issubjected to a compressive load

then

A. rod is under compressionB. tube is under compression

C. both rod and tube are under

compression

D. tube is under tension and rod is

under compression


75/100

The unit of modulus of elasticity issame as those ofA. stress, strain and pressure

B. stress, force and modulus of rigidityC. strain, force and pressure

D. stress, pressure and modulus of rigidity


76/100

The unit of modulus of elasticity issame as those ofA. stress, strain and pressure

B. stress, force and modulus of rigidityC. strain, force and pressure

D. stress, pressure and modulus of rigidity


77/100

A pressure vessel is said to be a thin

shell when it is made of thin sheets.

A. agreeB. disagree


78/100

A pressure vessel is said to be a thin

shell when it is made of thin sheets.

A. agreeB. disagree


79/100

When a shaft is subjected to a twisting

moment, every cross-section of theshaft will be under

A. tensile stress

B. compressive stressC. shear stress

D. bending stress


80/100

When a shaft is subjected to a

twisting moment, every cross-section of the shaft will be under

A. tensile stress

B. compressive stressC. shear stress

D. bending stress


81/100

Power required to drive a centrifugal

pump is directly proportional to____of its impeller

A. diameter

B. square of diameterC. cube of diameter

D. fourth power of diameter


82/100

Power required to drive a centrifugal

pump is directly proportional to____of its impeller

A. diameter

B. square of diameterC. cube of diameter

D. fourth power of diameter


83/100

The sleeve or muff coupling is

designed as a

A. dun cylinder

B. thick cylinderC. solid shaft

D. hollow shaft


84/100

The sleeve or muff coupling is

designed as a

A. dun cylinder

B. thick cylinderC. solid shaft

D. hollow shaft


85/100

Screws used for power transmission

should have

A. sow efficiency

B. high efficiencyC. very fine threads

D. strong teeth


86/100

Screws used for power transmission

should have

A. sow efficiency

B. high efficiencyC. very fine threads

D. strong teeth


87/100

The rolling contact bearings are

known as

A. thick lubricated bearings

B. plastic bearingsC. thin lubricated bearings

D. antifriction bearings


88/100

The rolling contact bearings are

known as

A. thick lubricated bearings

B. plastic bearingsC. thin lubricated bearings

D. antifriction bearings


89/100

The size of the gear is specified byA. pressure angle

B. pitch circle diameter

C. circular pitchD. diameter pitch


90/100

The size of the gear is specified byA. pressure angle

B. pitch circle diameter

C. circular pitchD. diameter pitch


91/100

The ratio of endurance limit in shear

to the endurance limit in flexure is

A. 0.25

B. 0.40C. 0.55

D. 0.70


92/100

The ratio of endurance limit in shear

to the endurance limit in flexure is

A. 0.25

B. 0.40C. 0.55

D. 0.70


93/100

When plates are fastened by a rivet,the holes in the plates should be

made by punching and reaming

A. correctB. Incorrect


94/100

When plates are fastened by a rivet,the holes in the plates should be

made by punching and reaming

A. correctB. Incorrect


95/100

A shoe brake is commonly used in

railway trains

A. yesB. no


96/100

A shoe brake is commonly used in

railway trains

A. yesB. no


97/100


98/100


99/100

Oldham coupling is used to transmitpower between two parallel shaft

are slightly offset.A. True

B. false


100/100

Oldham coupling is used to transmitpower between two parallel shaft

are slightly offset.A. True

B. false

According to Principle of Conservation of Energy,

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