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For lagging load power factor, the field of synchronous motor is :
Question

For lagging load power factor, the field of synchronous motor is :

A.

over excited

B.

under excited

C.

normally excited

D.

not excited

Correct option is B


The field of synchronous motor is under excited for lagging power factor. In this condition the back EMF (Eb) of the synchronous motor is less than the applied voltage (V).

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