A single-phase transmission line has a resistance of 0.22 ohm and inductive reactance of 0.36 ohm. Find the voltage at the sending end to give 500kva at 2000V at the receiving end at a load power...

A single-phase transmission line has a resistance of 0.22 ohm and inductive reactance of 0.36 ohm. Find the voltage at the sending end to give 500kva at 2000V at the receiving end at a load power factor of 0.707 lagging. Also find the efficiency of transmission at this load.