+1 vote
in Machine Dynamics by (34.3k points)
A shaft fitted with a flywheel rotates at 250 r.p.m. and drives a machine, the torque fluctuated about 18750 N-m, find the power required to drive the machine.

(a) 49.125 kW

(b) 24.56 kW

(c) 12.28 kW

(d) 6.14 kW

I got this question in an internship interview.

Question is from Coefficient of Fluctuation of Energy in section Turning Moment Diagrams and Flywheel of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Right answer is (a) 49.125 kW

Easy explanation: ω = 2π × 250/60 = 26.2 rad/s,

P = Tmean ×ω

   = 1875 x 26.2

 = 49.125 kW.

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