Physics · Power Systems
In the case where the voltage bases are the same, the new per-unit impedance is obtained from which of the following formulas?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Zpunew = Zpuold × SBnew × VBoldSBold × VBnew
- 2Zpunew = Zpuold × SBoldSBnew
- 3Zpuold = Zpunew × SBnewSBold
- 4Zpunew = Zpuold × SBnewSBold✓
Correct answer
Zpunew = Zpuold × SBnewSBold
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