Which fundamental effect increases in a transformer core when frequency nears ferromagnetic resonance?

A)Hysteresis losses heat excessively✓

B)Eddy currents generate back EMF

C)Increased blocking of magnetic domains

D)Magnetostriction induces physical distortion

💡 Explanation

Increased frequency toward ferromagnetic resonance causes significant hysteresis losses because the domain switching struggles to keep up with the field reversals; therefore losses heat the core excessively rather than eddy currents or magnetostriction, which are distinct phenomena.

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Which fundamental effect increases in a transformer core when frequency nears ferromagnetic resonance?

💡 Explanation

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