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Physics and Technology Fundamentals Quiz
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Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
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A
both the heating effect of current and hysteresis loss
💡 Explanation:
Transformer heating results from copper losses (I²R heating in windings) and core losses. Hysteresis loss occurs as the core is repeatedly magnetized and demagnetized by AC. Eddy current losses also contribute but aren't listed as options.