. Commutation in a dc machine may be hnprovedby Options: A . &nbspreducing to number of turns in the armature and segments of commutator B . &nbspincreasing the resistances of brushes C . &nbspneutralizing the reactance voltage by producing a reverse emf in the coil undergoing commutation D . &nbspall of these

. Commutation in a dc machine may be hnprovedby

Question - . Commutation in a dc machine may be hnprovedby

Options:

A . reducing to number of turns in the armature and segments of commutator

B . increasing the resistances of brushes

C . neutralizing the reactance voltage by producing a reverse emf in the coil undergoing commutation

D . all of these

Answer: Option D

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