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

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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3 Answers

Answer :

An auto-transformer may be used as:

A. Both Step-Up and Step-Down transformer

An auto-transformer is a type of transformer that has only one winding and can be used as a step-up or step-down transformer depending on how it is connected. In an auto-transformer, a part of the winding is common to both the primary and secondary sides, and the voltage is stepped up or down by tapping along the winding. It is more efficient than a conventional two-winding transformer because it has a lower copper loss and smaller size. Therefore, an auto-transformer is a versatile transformer that can be used for a variety of applications.
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Answer :

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

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Answer :

an autotransformer may used only as step down transformer
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