Theory of Machine
The driving and driven shafts connected by a Hooke's joint will have equal speeds, if

cotθ = cosα
cosθ = sinα
tanθ = ± cosα
sinθ = ± tanα

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Theory of Machine
Effort of a governor is the

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

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