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What factor does the additional copper losses depend upon?(a) skin effect(b) mmf harmonics(c) machine design(d) mmf harmonics and skin effectThis question was addressed to me by my college director while I was bunking the class.Origin of the question is Losses and Efficiency topic in division Three Phase Induction Motor of Design of Electrical Machines

Answer»

Correct OPTION is (d) MMF harmonics and skin effect

To explain: With a sinusoidal voltage impressed over the terminal of the MOTOR, the additional copper losses are caused. They are caused DUE to the higher order mmf harmonics and skin effect.



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