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The ratio of the height of a Porter governor (when the length of arms and links are equal) to the height of a Watt’s governor is

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in Machine Dynamics by (34.3k points)
The ratio of the height of a Porter governor (when the length of arms and links are equal) to the height of a Watt’s governor is

(a) m/m+M

(b) M/m+M

(c) m + M/m

(d) m + M/M

I have been asked this question in an interview for internship.

This intriguing question comes from Governors in chapter Governors of Machine Dynamics

1 Answer

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by (38.6k points)
The correct choice is (c) m + M/m

The explanation is: Mass of the central load (M) increases the height of governor in the ratio m + M/m

where m = Mass of the ball, and

M = Mass of the load on the sleeve.

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