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The iron loss in a 100kva transformer is 1 kw and full load
copper losses are 2 kw, then what is maximum efficiency occure
at a load?

Answer Posted / srihari

The load is not given so let us assume the load is resistive load.
therefore power factor is unity and at maximum efficiency copper losses = iron losses = 1kw.
100*10^3*1
efficiency= ------------------- = 98.03%
100*10^3*1+1000+1000

Is This Answer Correct ?    2 Yes 6 No



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