Question

a 220v 60hz single phase transformer has hysteresis loss of 340 watts and eddy current loss of 120 watts.if the transformer is operated from 220v then compute total current loss.assume steinzsmate constant equal to 1.6
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Answer 1

Answer:

V1=f1 Bm1V2f2 Bm2

∴220=60.Bm123050Bm2

⇒ Bm2 = 1.255 Bm1

∴ Ph2 = Ph1 ×f2 Bxm2f1 Bxm1

= 340 ×50(1.255)1.6 = 408.0 watts60

Pe2 = Pe1 ×f2 .Bm22f1 .Bm1

= 120 ×50× 1.2552= 131.3 watts60

Total loss= Ph2 + Pe2 = 408 + 131.3 = 539.3 watt.