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A winding of 20 full pitched series turns, distributed over a band of 60° under each pole, carries a current of 3A. The winding produces a uniform current sheet of density (in AT’s per electrical radiangs) of ___________

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A winding of 20 full pitched series turns, distributed over a band of 60° under each pole, carries a current of 3A. The winding produces a uniform current sheet of density (in AT’s per electrical radiangs) of ___________

(a) 180/Π

(b) 120/Π

(c) 90/Π

(d) 60/Π

This question was addressed to me in exam.

I would like to ask this question from MMF Produced by Distributed Windings topic in division Synchronous Machines of Electrical Machines

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Correct option is (a) 180/Π

The explanation is: Uniform current density J=(20∗3)/(Π/3)=180/Π.

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