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← ScienceWhich risk increases when a high-voltage transformer experiences thermal runaway?
A)Dielectric breakdown in the winding✓
B)Eddy current saturation decreases rapidly
C)Hysteresis losses sharply reduce output
D)Reduced core magnetic field focusing
💡 Explanation
Dielectric breakdown risk increases due to thermal runaway causing irreversible damage thermal degradation lowering breakdown voltage limits, because positive feedback increases heat generation; therefore insulation fails rather than enhanced magnetic performance because temperature is above maximum.
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