Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Remains constant for all radii of rotation
Increases as the radius of rotation decreases
Decreases as the radius of rotation increases
Increases as the radius of rotation increases

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Theory of Machine
Effort of a governor is the

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

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