Question

The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)

a.

I.P/B.P.

b.

B.P/I.P.

c.

B.P/F.P

d.

F.P./B.P.

Posted under Mechanical Engineering

Answer: (b).B.P/I.P.

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Q. The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)

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