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Theory of Machine

Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosφ
cosecφ
sinφ
secφ

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Theory of Machine
The unbalanced primary forces in a reciprocating engine are

Not balanced
Balanced by secondary forces
Balanced completely
Balanced partially

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Theory of Machine
Longitudinal vibrations are said to occur when the particles of a body moves

Parallel to its axis
In a circle about its axis
None of these
Perpendicular to its axis

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

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

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Theory of Machine
In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

None of these
Equal to
Greater than
Less than

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Theory of Machine
If the damping factor for a vibrating system is unity, then the system will be

Under damped
Over damped
Critically damped
Without vibrations

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