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Theory of Machine

Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

D₂/D₁
D₁
D₁/D₂
D₁.D₂

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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
Same
Unpredictable
Different

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Theory of Machine
The dynamic friction is the friction experienced by a body, when the body

None of these
Is at rest
Is in motion
Just begins to slide over the surface of the other body

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Theory of Machine
Cam size depends upon

Pitch circle
Prime circle
Outer circle
Base circle

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Theory of Machine
An exact straight line motion mechanism is a

Peaucellier's mechanism
Scott-Russell's mechanism
All of these
Hart's mechanism

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Theory of Machine
The purpose of a link is to

All of these
Guide other links
Act as a support
Transmit motion

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