Cogging in an induction motor is caused – McqOptions

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1.	Cogging in an induction motor is caused
A.	If the number of stator slots are unequal to number of rotor slots
B.	If the number of stator slots are an integral multiple of rotor slots
C.	If the motor is running at fraction of its rated speed
D.	Due to 5th harmonic
Answer» C. If the motor is running at fraction of its rated speed

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