At full load, the line in Problem 5.16 delivers $1500 \mathrm{MVA}$ at $480 \mathrm{kV}$ to the receivingend load. Calculate the sending-end voltage and percent voltage regulation when the receiving-end power factor is (a) 0.9 lagging, (b) unity, and (c) 0.9 leading.

Data From Problem 5.16:-

The \(500-\mathrm{kV}, 60-\mathrm{Hz}\) three-phase line has a \(300-\mathrm{km}\) length. Calculate: (a) \(Z_{c},(\mathrm{~b})(\gamma l)\), and (c) the exact \(A B C D\) parameters for this line. Assume a \(50^{\circ} \mathrm{C}\) conductor temperature.