Which of the following is the main advantage of an auto-transformer over a two winding transformer?
Correct answer: B. Saving in winding material
- A. Hysteresis losses are reduced
- B. Saving in winding material
- C. Copper losses are negligible
- D. Eddy losses are totally eliminated
Explanation
An autotransformer uses part of the same winding for both primary and secondary, so less copper and conductor material are required than in a two-winding transformer. Its core losses are not eliminated.
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