Theory of Machine - Mechanical Engineering Questions and Answers

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A very sensitive governor will cause hunting.

True

False

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In a radial cam, the follower moves

in a direction perpendicular to the cam axis

in a direction parallel to the cam axis

in any direction irrespective of the cam axis

along the cam axis

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The piston slide valve is an inside admission valve.

Yes

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The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

same

different

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Which of the following is a turning pair?

Piston and cylinder of a reciprocating steam engine

Shaft with collars at both ends fitted into a circular hole

Lead screw of a lathe with nut

Ball and a socket joint

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In a simple train of wheels, the velocity ratio __________ the intermediate wheels.

depends upon

is independent of

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The two elements of a pair are said to form a higher pair, when they

have a surface contact when in motion

have a line or point contact when in motion

are kept in contact by the action of external forces, when in motion

permit relative motion

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The maximum fluctuation of energy is the

difference between the maximum and minimum energies

sum of the maximum and minimum energies

variations of energy above and below the mean resisting torque line

ratio of the mean resisting torque to the workdone per cycle

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The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

structure

machine

inversion

compound mechanism