Electrical Engineering · Electrical Machines
Among the conditions required for the successful parallel operation of transformers, which of the following is uniquely necessary for three-phase transformers but NOT applicable when parallelizing single-phase transformers?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Identical voltage ratio
- 2Same per-unit impedance
- 3Correct polarity connection
- 4Same phase sequence✓
Correct answer
Same phase sequence
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