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← TechnologyWhich outcome occurs when supplying current beyond a transformer's rating?
A)Thermal runaway damages the insulation.✓
B)Increased core reluctance limits current.
C)Voltage sags invoke harmonic resonance.
D)Improved regulation reduces eddy currents.
💡 Explanation
Thermal runaway occurs because exceeding rated current causes increased I²R losses within the transformer windings; therefore, excessive heat degrades the insulating materials, rather than decreased current or altered harmonic profiles happening under safe operating conditions.
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