Delta/star transformer works satisfactorily when______________?
Correct answer: C. on balanced as well as unbalanced loads
- A. load is balanced only
- B. load is unbalanced only
- C. on balanced as well as unbalanced loads
- D. none of the above
Explanation
A delta winding provides a closed path for triplen-harmonic and zero-sequence currents, while the star winding can supply an unbalanced load through its neutral. Therefore, a delta/star transformer can operate satisfactorily with both balanced and unbalanced loads.
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