Theory of Machine
Effort of a governor is the

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

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Theory of Machine
Crowning on pulleys helps

In increasing velocity ratio
In decreasing the slip of the belt
Increase belt and pulley life
For automatic adjustment of belt position so that belt runs centrally

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Theory of Machine
Hammer blow

Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.
Varies as the square root of the speed
Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses
Varies inversely with the square of the speed

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