Virtual Labs

a: mean force exerted at the sleeve for a given percentage change of speed b: work done at the sleeve for maximum equilibrium speed c: means force exerted at the sleeve for maximum equilibrium speed d: none of the mentioned

The controlling force diagram for a spring-controlled governor is

a: Not continuous b: Curve c: Straight line d: None of these

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

a: increases as the radius of rotation decreases b: decreases as the radius of rotation decreases c: increases as the radius of rotation increases d: remains constant for all radii of rotation

In a spring-controlled governor, when the controlling force _____________ as the radius of rotation increases, it is said to be a stable governor.

a: remains constant b: decreases c: increases d: none of the mentioned

A spring controlled governor is said to be isochronous when the controlling force

a: increases as the radius of rotation decreases b: increases as the radius of rotation increases c: decreases as the radius of rotation decreases d: remains constant for all radii of rotation

A spring controlled governor is found unstable. It can be made stable by

a: increasing the spring stiffness b: decreasing the spring stiffness c: increasing the ball mass d: decreasing the ball mass

A Hartnell governor is a governor of the

a: inertia type b: pendulum type c: spring-controlled type d: dead weight type

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