Answer / deepak24

Iron Losses = (Kh x Phi^1.2 x F) Watt/M^3
Where Kh - Hysteresis Constant
Phi - Flux
F - Frequency

in above equation Kh, F are constant & Phi increase only 1 to 5% from No load to full Load. Hence Iron Losses are practically constant at all loads.

Ohms law explain

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