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← TechnologyA large sudden current spike when energizing a distribution transformer from the grid causes which outcome?
A)Core saturation and high inrush current✓
B)Increased hysteresis, reduced transformer efficiency
C)Reduced eddy currents, lower core temperature
D)Improved power factor, reduced reactive power
💡 Explanation
High inrush current is caused by core saturation because the initial voltage application occurs when the magnetic core's residual magnetism is aligned with the applied flux causing magnetic flux asymmetry. Therefore, saturation occurs rather than the normal magnetization cycle and low inrush current.
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