8. The ratio of output power to input power, in percent?A. work. B. efficiency. C. horsepower. D. conductivity.
2 answers:
That ratio is the efficiency of whatever the power went into and came out of. There's no reason the efficiency has to be expressed as a percentage.
The ratio of output power to input power, expressed as a percentage is B. efficiency.
Efficiency is expressed as a percentage less than 100%, as a machine could never be completely efficient.
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