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← TechnologyWhich outcome occurs when transmission line impedance increases abruptly on a utility grid?
A)Ferranti effect voltage amplification
B)Cascading system-wide failures✓
C)Sub-synchronous resonance damping
D)Reduced corona discharge losses
💡 Explanation
An abrupt impedance increase creates a large voltage drop, triggering `Protection System Malfunction` because current surges beyond circuit breaker capacity; therefore, escalating to cascading failures, rather than localized faults or self-corrected voltage sags under normal protective schemes.
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