A 100 kVA transformer has an efficiency of 95% at full load and also at half load, both at upf then which of the following are correct: (Given hysteresis loss Ph = 744.2 W)
1
Full load copper losses of the transformer equal to 3508.76 W
2
Eddy current losses of the transformer equal to 1010.61 W
3
Iron losses of the transformer equal to 1754.81 W
4
Maximum efficiency will occur at 0.707 fraction of full load