Question

For an electrical machine with C number of coils and P poles, the distance between the coils connected by an equalizer ring is?

(a) C/P

(b) C/2

(c) 2C/P

(d) C/2P

This question was addressed to me in quiz.

My question comes from Armature Windings topic in division Armature Windings of Electrical Machines

Answer 1

Correct answer is (c) 2C/P

To elaborate: Backward pitch for an equalizer ring = number of coils/pole pairs = C/P/2 = 2C/P.