A three-phase transmission line is 200 km long. It has a total series impedance of (25+ jl 10)2 per phase and a total shunt admittance of j5×10 . It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium t model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.

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Star Delta Conversion

Find the input resistance between points A and B of the following resistive network: