A 20 kV/7.97 kV autotransformer draws 100 A at its secondary. What is the current at the common winding?
Added by Thomas B.
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An autotransformer has a single winding that acts both as the primary and the secondary winding. The voltage is varied by tapping at different points along the winding. The current in the common winding is the difference between the primary and secondary currents Show more…
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