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

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+1 vote
in Machine Dynamics by (34.3k points)
A spring controlled governor is said to be unstable 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

I got this question in class test.

The query is from Hartnell Governor in section Governors of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Correct answer is (c) decreases as the radius of rotation decreases

Best explanation: If the equilibrium speed of the governor decreases with an increase of the radius of rotation of balls, then the governor is said to be unstable.

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