The power transmission capacity of the transmission line is
- A. Inversely proportional to the square of the voltage
- B. Proportional to the voltage
- C. Inversely proportional to the voltage
- D. Proportional to the square of the operating voltage
Answer: D. Proportional to the square of the operating voltage
Explanation: Maximum power transmission capacity Pmax = (VS·VR)/X. Since VS and VR are proportional to nominal voltage V, Pmax ∝ V² (proportional to the square of operating voltage).