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The number of compensating conductors/pole faces is _______ (where Z is the number of active armature conductors/pole; A is number of parallel paths; Ia is the armature current).

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The number of compensating conductors/pole faces is _______ (where Z is the number of active armature conductors/pole; A is number of parallel paths; Ia is the armature current).

(a) Z/A*Ia

(b) 2*A*Ia/Z

(c) Z*Ia/A

(d) Z/2A*Ia

I got this question during a job interview.

My question is from Effect of Brush Shift and Compensation Windings in section DC Machines of Electrical Machines

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Correct choice is (a) Z/A*Ia

Explanation: Compensating conductors per pole face is Z/A*Ia.

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