A single-phase transformer when supplied from 220V, 50 Hz

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A single-phase transformer when supplied from 220V, 50 Hz has eddy current loss of 50 W. If transformer is connected to a voltage of 330 V, 50 Hz, then eddy current loss will be _______ W .

1. 11.25 W
2. 112.5 W
3. 21.05 W
4. 1125 W

Correct Option: B

P_e = k_e f² B_m² , and V = 4.44 f B_m AN

∴	P_e1	=		f₁ B_m1		²	=		V₁		²
	P_e2			f₂ B_m2					V₂

⇒ P_e2 = P_e1.		V₁		²	= 50.		330		²	= 112.5 watts
		V₂					220