Question: Consider a 1 0 0 - hp , 2 5 0 - V , 1 2 0 0 rpm separately excited DC motor with an

Consider a 100-hp,250-V,1200 rpm separately excited DC motor with an armature resistance of 0.0352 and a field resistance of 41.675. The motor is initially running
with VA =250 V, Is =120 A, and n =1103 rpm, while supplying a constant-torque
load. Find the motor speed when Vs is reduced to 200 V.

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