Question

For a four pole, 16 slot armature with two coil-side/slot having wave connected progressive winding has single turn coils. The commutator pitch for the machine should be ________

(a) 1

(b) -1

(c) +1 and 1

(d) none of the mentioned

I got this question in examination.

Question is taken from Action of Commutator in chapter Electrical Machine Applications/Armature Reaction and Commutation of Electrical Machines

Answer 1

Correct choice is (a) 1

The explanation is: Commutator pitch for the wave connected progressive winding should be 1.