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Which outcome occurs when grid transformer banks experience unexpected reactive power demand across unbalanced three-phase systems?

A)Increased neutral current imbalances
B)Significant increase in system stability
C)Improved voltage regulation overall
D)Decreased transmission line losses

💡 Explanation

Increased reactive load causes voltage fluctuations and unequal current distribution. This triggers neutral current imbalances because unequal single-phase loads introduce circulating currents through the transformer windings' neutral connection. Therefore, neutral current rises, rather than improving voltage stability as evenly balanced systems do.

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