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Which of the following is the main advantage of an auto-transformer over a two-winding transformer?

Which of the following is the main advantage of an auto-transformer over a two-winding transformer? Correct Answer Saving in winding material

Auto transformer is a special type of transformer which has primary and secondary winding both located on same winding. Thus, winding material required for a transformer is very less in the case of autotransformer.

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