Question

In very large d.c. motors with severe heavy duty, armature reaction effects are corrected by______

(1) using interpoles only (ii) using compensatory windings in

addition to interpoles

(ii) shifting the brush position.

(iv) none of the above​

Answer 1

1 is correct option...

Explanation:

In DC machine One way to reduce the effects of armature reaction is to place small auxiliary poles called “interpoles” between the main field poles. he interpoles have a few turns of large wire and are connected in series with the armature.

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