How can the small single phase motor reduce the harmonics still much further?(a) removing the winding(b) insulating the winding(c) grading the winding(d) shading the windingI have been asked this question by my school teacher while I was bunking the class.This intriguing question comes from Design of Stator topic in chapter Design of Single Phase Induction Motor of Design of Electrical Machines

How can the small single phase motor reduce the harmonics still much f

1.	How can the small single phase motor reduce the harmonics still much further?(a) removing the winding(b) insulating the winding(c) grading the winding(d) shading the windingI have been asked this question by my school teacher while I was bunking the class.This intriguing question comes from Design of Stator topic in chapter Design of Single Phase Induction Motor of Design of Electrical Machines
Answer» RIGHT CHOICE is (C) grading the winding Easy explanation: 70% of the total slots are used for the reduction of the MMF wave harmonics. The mmf wave harmonics can be STILL further reduced by grading the winding.

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