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Answer Posted / faraz haider
well,kva stands for kilovoltampere.generally in the transformer two types of losses occur.one is d copper loss&other is d iron loss.cu loss depends upon d current flowing in d transformer whereas iron loss depends upon d voltage in d transformer.so d kva rating generally specify d losses occuring in d tansformer.dats is why transformer, generator, ups r rated in kva.
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