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A 400-V, 1000-A, lap wound dc machine has 10 poles, 860 armature conductors. The number of conductors in the pole face to give full compensation if pole face covers 70% of pole span is?

A 400-V, 1000-A, lap wound dc machine has 10 poles, 860 armature conductors. The number of conductors in the pole face to give full compensation if pole face covers 70% of pole span is? Correct Answer 3010

AT/pole for the compensating winding = 0.7*(Z*I/2P) = 0.7*(860*100/2*10) = 3010 AT.

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