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MakcuM [25]
3 years ago
10

A machine is supplied Energy at a rate of 4000 W and does useful work at a rate of 3760 W. What is the efficiency of the machine

?
Physics
2 answers:
ICE Princess25 [194]3 years ago
6 0
The efficiency of a machine is the ratio between the output power and the power in input:
\epsilon =  \frac{P_{out}}{P_{in}}
in our problem, the output power is 3760 W while the input power is 4000 W, so the efficiency is
\epsilon =  \frac{3760 W}{4000 W} =0.94
So the efficiency of the machine is 94%.
Alex17521 [72]3 years ago
5 0

Answer:

94%

Explanation:

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