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Theory of Machine

Theory of Machine
In an ideal machine, the output as compared to input is

Equal
More
Less
May be less or more depending on efficiency

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Theory of Machine
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

ω² × OQ cosθ
ω² × OQ
ω² × OQ sinθ
ω² × OQ tanθ

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Theory of Machine
In higher pair, the relative motion is

Purely turning
Combination of sliding and turning
Purely sliding
Purely rotary

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Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

Involute
A circle
A straight line
Cycloidal

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Theory of Machine
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Inversely proportional to
Directly proportional to
Independent of
Equal to

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Theory of Machine
For a kinematic chain to be considered as mechanism

There is no such criterion
None of the links should be fixed
One link should be fixed
Two links should be fixed

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