Why Transformer in KVA?
Answer Posted / prabas
transformer rating only in KVA because copper losses depends
upon current(I^2R) and iron losses depends upon voltage.
iron losses are 2 types 1)eddy current losses 2)hysterises
losses so total losses depends upon I,V not on phase angle
between i and v.so t/f rating always in KVA not in KW.
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