+1 vote
in Machine Dynamics by (34.3k points)
For a governor, the sensitivity is 0.5 and the mean speed is 20 rpm, find the minimum speed.

(a) 15 rpm

(b) 25 rpm

(c) 30 rpm

(d) 40 rpm

The question was posed to me during a job interview.

This intriguing question comes from Sensitiveness and Stability of Governors topic in chapter Governors of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
The correct answer is (a) 15 rpm

The best explanation: 20 = (N1+N2)/2 :: 40 = N1 + N2

0.5×20 = N1-N2

10 = N1-N2

therefore N1= 25 rpm

N2 = 15 rpm.

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