Question: A 2 2 0 V , 1 5 kW , 1 0 0 0 rpm shunt motor with armature resistance of 0 . 2 5

A 220 V,15 kW,1000 rpm shunt motor with armature resistance of 0.25 has a rated line current of 68 A and a rated field current of 2.2 A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A is

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