A short transmission line is having series impedance Z = 0.07 + j 0.12 p.u. If the transmission line is operating under full load at leading p.f, what will be the possible voltage regulation of transmission line?
- A. 17%
- B. 5%
- C. 9%
- D. 12%
Answer: B. 5%
Explanation: Voltage regulation for leading power factor VR = R cos φ − X sin φ; with R = 0.07 p.u. and X = 0.12 p.u., regulation typically evaluates to 5% (Option b).