Question

The brake power is the power available ____________

(a) in the engine cylinder

(b) at the crank shaft

(c) at the crank pin

(d) none of the mentioned

This question was addressed to me in exam.

I'm obligated to ask this question of Engine Power in portion Measurements and Testing/Performance Parameters and Characteristics of IC Engine

Answer 1

The correct answer is:

(b) at the crank shaft

Explanation:

Brake power (BP) refers to the power delivered at the crankshaft of an engine. It is the actual mechanical output power available to do useful work, such as driving a vehicle or generating electricity, after losses due to friction in the engine components. It is measured using a brake dynamometer attached to the crankshaft.