A 3-phase, 50 Hz overhead transmission line, 100 km long, 110 kV between the lines at the receiving end has the following constants : Resistance per km per phase = 0·153 W Inductance per km per phase = 1·21 mH Capacitance per km per phase = 0·00958 µF The line supplies a  load of  20,000 kW at  0·9  power factor lagging. Calculate using nominal p representation, the sending end voltage, current, power factor, regulation, and the efficiency of the line. Neglect leakage.

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A 3-phase, 50 Hz overhead transmission line, 100 km long, 110 kV between the lines at the receiving end has the following constants :

Resistance per km per phase = 0·153 W

Inductance per km per phase = 1·21 mH

Capacitance per km per phase = 0·00958 µF

The line supplies a  load of  20,000 kW at  0·9  power factor lagging.

Calculate using nominal p representation, the sending end voltage, current, power factor, regulation, and the efficiency of the line. Neglect leakage.

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