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← ScienceWhich mechanism causes increased energy loss in power transformers operating commercial AC grids?
A)Hysteresis due to domain realignment
B)Corona discharge from atmospheric humidity
C)Skin effect limiting conductor efficiency
D)Eddy currents from core magnetization✓
💡 Explanation
When AC voltage is applied, the transformer core experiences continuously changing magnetic flux, inducing eddy currents because of Faraday's Law, causing resistive heating and energy loss in the core lamination. Therefore eddy currents increase energy loss, rather than hysteresis, corona, or skin effect which require different conditions.
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