Production Engineering - Mechanical Engineering Questions and Answers

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

I.P/B.P.

B.P/I.P.

B.P/F.P

F.P./B.P.

Answer : Option B

Explanation :

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