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If the hysteresis is neglected in the induction machine, then the the air gap flux _______ the resultant mmf.

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If the hysteresis is neglected in the induction machine, then the the air gap flux _______ the resultant mmf.

(a) is in phase with

(b) lags

(c) leads by a small angle

(d) can not decide the nature of the operation

I got this question in unit test.

This intriguing question originated from Induction Motor Phasor Diagram topic in portion Induction Machines of Electrical Machines

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The correct answer is (a) is in phase with

For explanation I would say: When the hysteresis loss is neglected, then the air gap flux will be in phase with the resultant mmf.

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