Which outcome occurs when a transformer operates with significant DC voltage in the AC input?

💡 Explanation

When significant DC voltage is present in an AC transformer input, core saturation arises because the DC component shifts the magnetic flux operating point, potentially driving it beyond the saturation region, causing sharply increased magnetizing current. Therefore, core saturation and increased inrush current result, rather than capacitive reactance, skin effect, or dielectric breakdown which involve different physical processes and conditions.

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