Question: A 1 0 kW , 2 5 0 V DC shunt motor has an armature resistance of 0 . 5 and a field resistance of

A 10 kW,250 V DC shunt motor has an armature resistance of 0.5 and a field resistance of 200 N. No load and at rated voltage, the speed is 1200 rpm and the armature current is 3 A. At full load and at nominal voltage, the line current is 47 A and, due to the armature reaction, the flux is 4% lower than its no-load value. a What is the speed at full load? b What is the torque developed at full load?

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