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Which risk increases when a long transmission circuit breaker trips under a heavy inductive load?

A)Ferranti effect voltage escalation
B)Transformer core saturation
C)Cable insulation thermal breakdown
D)Line impedance distance relay malfunction

💡 Explanation

When a lightly loaded transmission line is suddenly opened, the Ferranti effect causes a voltage rise at the receiving end because charging current leads the voltage, leading to overvoltage. Therefore, voltage escalation results, rather than saturation, breakdown or malfunction which involve different electrical phenomena.

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