+1 vote
in Machine Dynamics by (34.3k points)
Flywheel diameter 1.2 m; diameter of the rope 12.5 mm; engine speed 400 r.p.m.; dead load on the brake 600 N; spring balance reading 150 N. Using this data, calculate the brake power of the engine in kW.

(a) 12.82

(b) 11.43

(c) 13.64

(d) 10.22

I had been asked this question by my college director while I was bunking the class.

I want to ask this question from Dynamometer in section Brakes and Dynamometers of Machine Dynamics

1 Answer

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by (38.6k points)
Right answer is (b) 11.43

Easiest explanation: The brake power of an engine is given by the relation:

B.P = [(W-S)π (D+d)N]/60

      = 11430 W.

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