how does power factor vary using two auto transformers?
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The Autotransformer have many advantages over conventional double wound transformers. They are generally more efficient for the same VA rating, are smaller in size, and as they require less copper in their construction, their cost is less compared to double wound transformers of the same VA rating.
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The primary and secondary windings of an Autotransformer are linked together both electrically and magnetically reducing the cost over conventional transformers
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