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

A Eddy losses are totally eliminated
B Copper losses are negligible
C Saving in winding material
D Hysteresis losses are reduced

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.
Bissoy MCQ
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