Question

In a dc machine if p is the number of poles, n is the armature speed in rpm, then the frequency of magnetic reversal will be

Answer 1

The dc machine usually has a dc winding or a set of permanent magnets on the .... To generalize, there may be P poles. Then: (4.25) E a = p 2 ⋅ 2 π 

Answer 2

Answer:

p 2.2π is your answer.....