Which of the following is the main advantage of an auto-transformer over a two winding transformer – Transformer MCQ#76

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

  1. Elimination of Eddy current losses
  2. Copper losses are negligible
  3. Saving in winding material
  4. Reduced Hysteresis losses

Correct answer: 3. Saving in winding material

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