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← ScienceWhich risk increases when a transformer's core saturates?
A)Increased core hysteresis loss rises✓
B)Primary winding resistance also rises
C)Eddy current density decreases slowly
D)Dielectric oil viscosity strongly increases
💡 Explanation
Core saturation increases the magnetizing current dramatically, increasing hysteresis loss because magnetic domains struggle to align. Therefore, core heating becomes substantial, rather than lower eddy currents or oil viscosity changes which don't directly follow from saturation.
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