Theory of Machine
In a gear having involute teeth, the normal to the involute is a tangent to the

Pitch circle
Dedendum circle
Base circle
Addendum circle

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Theory of Machine
Effort of a governor is the

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

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