Question: 1 5 - 7 A separately - excited shunt generator is operating at 1 5 0 0 rpm and a shaft torque of 1 7

15-7 A separately-excited shunt generator is operating at 1500 rpm and a shaft torque of 17.72ft-lb. The field voltage is 140 V dc and the field current is 775 mA . If the generator is delivering 18 A at 145 V dc, what is the overall efficiency?
1 5 - 7 A separately - excited shunt generator is

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