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← ScienceWhich risk increases when a high-voltage transformer operates under sustained, asymmetric magnetic fields?
A)Dielectric breakdown reduces insulation life
B)Eddy current losses cause overheating✓
C)Reduced hysteresis minimizes core saturation
D)Increased flux enhances voltage transformation
💡 Explanation
Sustained asymmetric magnetic fields induce circulating currents in the core, triggering eddy current losses because of electromagnetic induction. Therefore, core overheating increases rapidly rather than reduced insulation breakdown, due to increased temperatures; hysteresis isn't directly relevant here.
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