Star/star transformers work satisfactorily when________________?
Correct answer: B. load is balanced only
- A. load is unbalanced only
- B. load is balanced only
- C. on balanced as well as unbalanced loads
- D. none of the above
Explanation
A star/star transformer is normally suitable for balanced loads, but unbalanced loading and third-harmonic currents can cause neutral displacement and waveform distortion when no delta winding is available. Hence it is generally specified for balanced loads only.
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