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A 250-kw 230-volt compound generator is delivering 80 amp at 230 volts. The shunt-field current is 12 amp. The armature resistance is 0.007 ohm, and

A 250-kw 230-volt compound generator is delivering 80 amp at 230 volts. The shunt-field current is 12 amp. The armature resistance is 0.007 ohm, and the series-field resistance is 0.002 ohm. The stray power at this load is 5,500 watts. The generator is connected long-shunt. Determine generator efficiency at this load

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