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A DC Shunt motor takes a current of 50A on a 440V supply runs at a...

A DC Shunt motor takes a current of 50A on a 440V supply runs at a speed of 1000rpm, with an armature resistance of 0.5Ω and a filed resistance of 100Ω.A Chopper is used to control the speed of motor in the range of 400-800rpm having constant torque. The on period of chopper is 2ms, with field supply voltage from 440V.Determine range of Frequencies of Chopper.
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