Question

A motor equipped with a fly wheel is to supply a load torque of 1000 N-m for 10 sec
followed by a light load period of 200 N-m long enough for a fly wheel to regain its steady
state period. It is desired to limit the motor torque to 700 N-m. What should be the moment
of inertia of the fly wheel? Motor has an inertia of 10 kg-m
2
. Its no load speed is 500 rpm
and the slip at a torque of 500 N-m is 5 %. Assume speed-torque characteristics of motor to
be straight line in the region of interest.

Answer 1

Answer:

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