Theory of Machine
Critical damping is a function of

Damping coefficient and natural frequency
Mass and stiffness
Mass and natural frequency
Mass and damping coefficient

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Theory of Machine
Power of a governor is the

None of these
Mean force exerted at the sleeve for a given percentage change of speed
Mean force exerted at the sleeve for maximum equilibrium speed
Work-done at the sleeve for maximum equilibrium speed

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Theory of Machine
In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

Because of loose contact of follower with cam surface
In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
Because of difficulty in manufacturing cam profile
Because the uniform velocity motion is a partial parabolic motion

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