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← ScienceWhich outcome occurs when a high-voltage DC transmission line experiences icing, and subsequent increase in the capacitance of insulators?
A)Increased corona discharge and power loss✓
B)Improved voltage regulation along the line
C)Diminished risk of flashover events
D)Decreased electromagnetic interference emission
💡 Explanation
Corona discharge results because the increased capacitance lowers the impedance, enhancing the electric field and causing ionization of air near the insulators due to dielectric breakdown; therefore power loss rises rather than being mitigated without capacitance shift.
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