Which risk increases significantly when repetitive, rapid interruptions occur in a high-voltage DC transmission circuit?

💡 Explanation

Circuit breaker contact wear increases under repetitive interruption because arc quenching erodes contact material during each operation, therefore the device degrades, needing replacement sooner, rather than capacitor or transformer faults developing unless outside voltage limits.

• Which outcome results when harmonic currents circulate neutral return of electrical power distribution circuits?
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