A 4 pole DC machine has 36 number of armature conductors. What

a-4-pole-dc-machine-has-36-number-of-armature-conductors-what

A 4 pole DC machine has 36 number of armature conductors. What is the pole pitch?

A. 9

B. 1/9

C. 9^2

D. 1/9^2

I had been asked this question in homework.

My question is taken from Design of Armature in section Thermal Design Aspects of Electrical Machines & D.C of Design of Electrical Machines

The correct choice is A. 9

Easy explanation: Pole pitch = Number of armature slots/pole

Pole Pitch = 36/4 = 9.