Ratio of indicated h.p. to shaft h.p. in known as

Ratio of indicated h.p. to shaft h.p. in known as Correct Answer Mechanical efficiency

The ratio of the air-indicated horsepower to the indicated horsepower in a power cylinder, in the case of compression driven by steam or internal-combustion engines, and to the brake horsepower delivered to the shaft in the case of a power-driven machine.
Bissoy MCQ

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