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← TechnologyWhich risk markedly increases when impedance surges through transmission lines?
A)Cascading breaker failures arise✓
B)Transformer core saturation occurs
C)Reduced power factor emerges
D)Insulation performance improves
💡 Explanation
Cascading breaker failures rise when facing surges because line impedance mismatch triggers sympathetic tripping. Propagation proceeds due to imbalanced fault handling across interconnected components; therefore, large-scale blackouts materialize rather than only localized outages limited by fuse characteristics on distributed lines.
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