A 4200-V, three-phase transmission line has an impedance of (4 + j) Ω per phase and it supplies a load of 1 MVA at 0.80 power factor (lagging).
What is the complex power? The complex power is __ + __ J MVA.
What is the power loss? The power loss is __ kW.
What is the voltage at the sending line? The voltage at the sending line is __ < __ kV.