Inductance of transmission line for a length of 400 kms in unsymmetrical configuration are: LR = 30 mH, LY = 20 mH, LB = 25 mH. What will be the inductance of each transmission line after transposing?
- A. LR = LY = LB = 30 mH
- B. LR = LY = LB = 20 mH
- C. LR = LY = LB = 25 mH
- D. LR = LY = LB = 75 mH
Answer: C. LR = LY = LB = 25 mH
Explanation: After complete transposition, each phase experiences identical spatial configurations, so transposed inductance is the average: L = (30 + 20 + 25)/3 = 25 mH.