Answer / awdhesh

70.70 KVA

Answer / k.prakashchandra

70 % of full load crrent

Answer / 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

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