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← TechnologyWhich consequence reduces system efficiency when harmonic currents circulate within a three-phase power transformer?
A)Increased core overheating from eddy currents✓
B)Decreased voltage regulation from impedance rise
C)Elevated fault currents from resonance effects
D)Decreased power factor from harmonic distortion
💡 Explanation
When harmonic currents circulate, increased core losses from eddy currents occur because harmonics induce higher frequency magnetic fields, increasing core saturation. Therefore, core overheating results, reducing system efficiency, rather than voltage regulation, fault currents, or power factor which are consequences linked to overall network characteristics.
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