3-phase overhead transmission line has the following constants :
Resistance/phase = 10 Ω
Inductive reactance/phase = 35 Ω
Capacitive admittance/phase = 3 × 10− 4 siemen
If the line supplied a balanced load of 40,000 kVA at 110 kV and 0·8 p.f. lagging, calculate :
(i) sending end power factor (ii) percentage regulation
(iii) transmission efficiency .
