Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Magnitude of the forces on journal
Radius of journal
Angular velocity of journal
Clearance between journal and bearing

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Theory of Machine
Effort of a governor is the

None of these
Work-done at the sleeve for maximum equilibrium speed
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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Theory of Machine
The maximum fluctuation of speed is the

Difference of the maximum and minimum speeds
Variations of speed above and below the mean resisting torque line
Difference of minimum fluctuation of speed and the mean speed
Sum of maximum and minimum speeds

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