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← ScienceWhich outcome occurs when a high-voltage transformer's oil insulation degrades?
A)Increased eddy current power losses
B)Higher capacitive harmonic resonance✓
C)Decreased magnetic flux saturation penalty
D)Greater dielectric field breakdown strength
💡 Explanation
A compromised high-voltage transformer causes increased harmonic resonance due to increased capacitance between windings, because the oil's dielectric properties decline, allowing stronger interference in electric fields. Therefore, harmonic instability increases, rather than better electrical performance, under faulty conditions.
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