In dc machines, the interpoles are provided
A. for mechanical balancing of machines.
B. to counteract the demagnetizing effect of armature mmf in the commutating zone.
C. to counteract the reactance voltage and the cross-magnetizing effect of armature mmf in the commutating zone.
D. to make commutation sparkless.
E. both (C) and (D).
Show Answer
Answer: E
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