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MMF produced by one N-turn coil carrying a current i is ____________

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MMF produced by one N-turn coil carrying a current i is ____________

(a) rectangular of amplitude Ni/2

(b) trapezoidal of amplitude Ni/2

(c) rectangular of amplitude Ni

(d) trapezoidal of amplitude Ni

The question was asked in an interview.

My question is from MMF Produced by Distributed Windings in section Synchronous Machines of Electrical Machines

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The correct option is (a) rectangular of amplitude Ni/2

Best explanation: The MMF variation due to one N-turn coil is seen to be a rectangular wave of amplitude +1/2(Ni) or -1/2(Ni).

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