+1 vote
in Machine Dynamics by (34.3k points)
If the mean effort is doubled and the sleeve lift is halved, If P was the original power then what will be the power post the changes?

(a) 2P

(b) P

(c) 4P

(d) P/2

This question was addressed to me in examination.

This key question is from Effort and Power of a Governor topic in division Governors of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
The correct answer is (b) P

The best I can explain: Power is given by:

mean effort x sleeve lift

since power is directly proportional to the sleeve lift and mean effort, hence doubling one factor and reducing the other to half has no effect on the power.

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