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What are the modes in which power can be transferred in an autotransformer?

What are the modes in which power can be transferred in an autotransformer? Correct Answer Conduction and Induction

In two winding transformer there is no electrical connection between primary and secondary. So, the power is transferred through induction. But in auto-transformer there is a common electrical path between primary and secondary. So, power is transferred through both conduction and induction processes.

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