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A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? A. 96 percent B. 97 percent C. 92 percent D. 94 percent
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A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?

A. 96 percent
B. 97 percent
C. 92 percent
D. 94 percent

User Ghillie
by
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2 Answers

4 votes

Answer:94 precent

Explanation: took test

User Xolani
by
9.1k points
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D) 94 percent is your answer. To find the efficiency you divide the amount of useful work by the amount of energy supplied.
3,760/4000 = .94 or 94%
User Olivier C
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7.9k points
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