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Answer :

In a D.C. generator, the iron losses mainly take place in armature rotor.

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Answer : Iron losses in a D.C. machine are independent of variations in load.

Answer : The total losses in a well designed D.C. generator of 10 kW will be nearly 500 W.

Description : In DC motor iron losses are occurred in?

Answer : In DC motor iron losses are occurred in the armature.

Answer : The critical resistance of the D.C. generator is the resistance of field.

Description : If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be?

Answer : If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be zero.