The Mechanical efficiency of i.c. engine is defined as

     

MCQ  

The Mechanical efficiency of i.c. engine is defined as



Options 

A) IHP ÷ BHP

B) BHP ÷ IHP

C) IHP - BHP

D) BHP - IHP


Correct answer : option B ( solution discussed below)



Solution

Diesel  mechanical efficiency is a ratio of brake power per unit indicated power is known as mechanical efficiency.

Mechanical efficiency 
    =   brake power   
       Indicated power 

    = BHP ÷ IHP

Where 
BHP = Brake power 
IHP = indicated power

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