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← ScienceWhich outcome results when a substation transformer's magnetic field excessively saturates?
A)Increased harmonic current production✓
B)Improved voltage regulation accuracy
C)Enhanced transformer cooling efficiency
D)Decreased core hysteresis losses
💡 Explanation
Increased harmonics occur due to core saturation because the core's ferromagnetic domains are fully aligned, which severely distorts the magnetization current due to non-linear magnetizing inductance. Therefore, harmonic contribution sharply rises rather than benefits such voltage regulation or cooling efficiency because of compromised performance.
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