Physics · Transformers
When an auto-transformer is compared with a conventional two-winding transformer of the same rating, which of the following statements is NOT correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Its short-circuit current is lower✓
- 2It uses less copper
- 3Its physical size is smaller
- 4Its efficiency is higher
Correct answer
Its short-circuit current is lower
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