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← ScienceWhich outcome results when a transmission tower's insulator fails?
A)Cascading line fault occurs nearby✓
B)Corona discharge risk drastically reduces
C)Reactive inductance decreases steadily
D)Electromagnetic fields minimize line losses
💡 Explanation
A tower insulator failure allows uncontrolled current flow through the tower's structure, causing a ground fault; impedance decreases and fault current rises triggering `cascading failure` of nearby lines because fault current propagates, therefore the correct answer is A rather than a localized phenomenon.
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