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Theory of Machine

Theory of Machine
The lead screw of a lathe with nut forms a

Sliding pair
Rolling pair
Turning pair
Screw pair

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Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.6253/ √δS
0.5615/ √δS
0.571/ √δS
0.4985/ √δS

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Theory of Machine
The indicator using Watt mechanism is known as

Thomson indicator
Thompson indicator
Richard indicator
Simplex indicator

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

(3/4) μ W R cosecα
μ W R cosecα
(1/2) μ W R cosecα
(2/3) μ W R cosecα

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

None of these
Unpredictable
Same
Different

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Theory of Machine
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Equal to
None of these
Greater than
Less than

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