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← TechnologyWhich unstable system outcome results when a large power transformer experiences ferroresonance?
A)Harmonic voltage amplification, overheating✓
B)Localized winding insulation breakdown
C)Increased eddy current core losses
D)Elevated short-circuit withstand capability
💡 Explanation
Harmonic voltage amplification occurs because the nonlinear magnetizing inductance, coupled with system capacitance, forms a resonant circuit, thereby amplifying harmonic currents and causing transformer overheating; therefore harmonic amplification, rather than improved system stability, develops under a resonating state.
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