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← TechnologyWhich failure causes voltage sag in industrial power systems?
A)Inrush current from motor starts✓
B)Harmonic distortion by variable drives
C)Transformer core saturation at peak
D)Capacitive load imbalance feedback
💡 Explanation
Large motor starting currents cause temporary voltage drops because the system impedance limits available current during the inrush, therefore reducing the voltage system-wide rather than affecting individual components from harmonics or core overexcitation.
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