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← TechnologyWhich transformer failure increases when secondary load capacitance rises excessively?
A)Resonant harmonic overvoltage amplification✓
B)Dielectric breakdown of winding insulation
C)Magnetic core saturation losses rising
D)Excessive eddy current related heating
💡 Explanation
Resonant harmonic overvoltage amplification increases on capacitor loading because the transformer's leakage inductance forms a resonant circuit; therefore, voltage stresses at harmonic frequencies are amplified, rather than causing effects like ohmic overheating, within design limits, or gradual, long-term insulation breakdown.
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