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.