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An Auto-transformer (which has only one winding) may be used as a ______ . 

(A) Both Step-Up and Step-Down transformer (B) Step-Down Transformer (C) Step-Up Transformer (D) None of these

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2 Answers

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An Auto-transformer (which has only one winding) may be used as a Both Step-Up and Step-Down transformer

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an autotransformer may used only as step down transformer

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