Calculate the efficiency for each machine, then answer the question. Machine A has an input work of 1,000 J and an output work of 250 J. Machine B has an input work of 500 J and an output work of 350 J. Machine C has an input work of 200 J and an output work of 150 J. Which machine is the most efficient?

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13 August, 08:03

Calculate the efficiency for each machine, then answer the question. Machine A has an input work of 1,000 J and an output work of 250 J. Machine B has an input work of 500 J and an output work of 350 J. Machine C has an input work of 200 J and an output work of 150 J. Which machine is the most efficient?

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Gaven Hatfield · Answer 1

Machine C. Machine A has an efficiency of 250/1000 = 0.25 = 25%, Machine B's efficiency is 350/500 = 0.7 = 70% and Machine C has an efficiency of 150/200 = 0.75 = 75%.