6.8. A three phase, 50 Hz, 100 km transmission line has resistance 0.1 ohms/km, inductance 111.7 mH/km and capacitance XXXXXXXXXXx 10- uF/ph per km. The line is delivering 20 MW at a 0.8 power factor...

6.8. A three phase, 50 Hz, 100 km transmission line has resistance 0.1 ohms/km, inductance 111.7 mH/km and capacitance 0.9954 x 10- uF/ph per km. The line is delivering 20 MW at a 0.8 power factor lagging and 66 kV to a balanced load. Determine the efficiency and regulation. Use nominal it method.

Ans. n= 93.5%, VR = 17.47%