## Theory of Machine

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Theory of Machine

The instantaneous centers which vary with the configuration of mechanism are called

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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.

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Theory of Machine

The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)

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Theory of Machine

The total number of instantaneous centers for a mechanism consisting of n links are

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Theory of Machine

Crowning on pulleys helps

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