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With a P-pole DC machine with armature current Ia, the current per brush arm for a lap connected windings is?

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With a P-pole DC machine with armature current Ia, the current per brush arm for a lap connected windings is?

(a) Ia/P

(b) Ia/2P

(c) 2Ia/P

(d) Ia/4P

I have been asked this question during an interview.

My enquiry is from Armature Windings in chapter Armature Windings of Electrical Machines

1 Answer

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Best answer
Correct choice is (c) 2Ia/P

Best explanation: Current per brush (lap winding) = total armature current/Number of pole pairs.

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