Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

cotα = c/2b
sinα = b/c
tanα = c/2b
cosα = c/b

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Theory of Machine
Power 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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