Q. The periphery of the armature divided by the number of poles of the machine is called :

A
Front pitch
B
Pole pitch
C
Back pitch
D
Commutator pitch
Solution:

The pole pitch is defined as peripheral distance between center of two adjacent poles in dc machine. This distance is measured in term of armature slots or armature conductor come between two adjacent pole centers. This is naturally equal to the total number of armature slots divided by number of poles in the machine.

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