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Three transformers having identical dimensions but with core of iron, aluminium and wood are wound with same number of turns and have same supply. Then choose the order for hysteresis losses.

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Three transformers having identical dimensions but with core of iron, aluminium and wood are wound with same number of turns and have same supply. Then choose the order for hysteresis losses.

(a) wood > aluminium > iron

(b) aluminium > iron > wood

(c) iron > wood > aluminium

(d) iron > aluminium > wood

This question was addressed to me in exam.

I need to ask this question from Autotransformers in chapter Transformers of Electrical Machines

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The correct answer is (d) iron > aluminium > wood

The best I can explain: Hysteresis losses occur maximum in the ferromagnetic material.

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