The inductance of power transmission line increases with
- A. Decrease in line length
- B. Increase in diameter of conductor
- C. Increase in spacing between phase conductors
- D. Increase in load current carried by the conductor
Answer: C. Increase in spacing between phase conductors
Explanation: Loop inductance per unit length L = 2×10⁻⁷ ln(D/r') H/m; increasing phase conductor spacing D increases ln(D/r') and therefore increases inductance.