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Question

A porter governor has a maximum and minimum
equilibrium speeds of 250 rpm and 200 rpm respectively. If effective load on the sleeve is 400 N, the governor effort would be

A
250 N
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B
200 N
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C
400 N
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D
100 N
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Solution

The correct option is D 100 N
Effort is mean force exerted at sleeve for a given percentage change in speed
Effort=400×(250200200)=100 N

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