Which outcome occurs when asymmetrical fault current stresses secondary transformer circuits?

A)Harmonic imbalances in voltage waveforms

B)Increased core saturation and overheating✓

C)Decreased leakage reactance temporarily

D)Uniform thermal stress in windings

💡 Explanation

Increased core saturation and overheating happens during asymmetrical faults due to the DC offset creating unidirectional flux. This is because the `DC magnetization` mechanism strongly affects transformer cores; therefore, saturation risk increases rather than harmonic issues or reactance changes occurring during symmetrical fault clearance.

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Which outcome occurs when asymmetrical fault current stresses secondary transformer circuits?

💡 Explanation

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