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← ScienceWhen a toroidal transformer's winding insulation degrades, which failure arises?
A)Increased eddy current power loss
B)Reduced leakage inductance performance
C)Localized overheating escalates rapidly✓
D)Complete collapse from core saturation
💡 Explanation
Insulation failure within the windings causes increased current flow due to partial shorting; because fewer turns carry proportionally more current therefore intense localized Joule heating arises which rapidly degrades adjacent insulation rather than merely impacting inductance.
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