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Motor also having losses, we call KW rating. In
transformer and generator having losses but we call KVA
Rating why?
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Answer Posted / tameshwar singh
I think that motor is designed for any defined power o/p &
its load Pf is also known for that power thus we can give
its rating in kW. But in case of Xmer & alternator the load
is not fixed & so as the load PF thus its rating is given
in KVA.
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