Answer / sithathur ramamoorthy

Transformer copper loss is depend the current and iron loss
is depend the voltage. in depend the difference between
current to voltage. thats it.

Answer / dpk_1fj

Because we don't know what type of load going to be connect

Answer / chad

KW=1.732* V*I*cos@
KVA=1.732*V*I

We can see the equation the kw is change by load,but kva power is not change by load.thats is

Answer / deepak

tx o/p limited by heating hence losses
and losses depend apn V, I only not on load pf
so rating in volt-amp.not in watt.watt mean active
powr depend apn pf also

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