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In dc machines, the interpoles are prorided | |
A. | for mechanical balancing of machines. [Wrong Answer] |
B. | to counteractthe demagnetizing effect of armature mmf in the commutating zone. [Wrong Answer] |
C. | to counteract the reactance voltage and the cross-magnetizing effect of armature mmf in the commutating zone. [Wrong Answer] |
D. | to make commutation sparkless. [Wrong Answer] |
E. | both (e) and (d). [Correct Answer] |