pf of synchronius motor is unity, is it axact(=one) value. ?
It depends on condition in which you are operating it.
If you are operating it over excited and on no load condition then its power factor is greater than 1(this is used to used to improve power factor).
If it is operating in under excited condition then power factor is less than 1.(it will supply reactive power).
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respected sir, sir recentely i have applied for chennai and tiruvananthapur section enggineer and juniour engg in electrical dept. but still i donot get how i have to syart my preparation and also t the same time i donot know exactly what they r going to give in the examinations i mean which sections they r going to give i donot know exactly, can u prefer whichh books i have to follow and model papers or both boards
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