Example

A single phase $60$ Hz generator supplies an inductive load of $4500$ kW at a power factor of $0\mathrm{.}8$ lagging by means of an $20$ km long overhead tronsmission line. The line resistance and inductance ore $\backslash (0\mathrm{.}0195\backslash$Omega $\backslash )$ and $\backslash (0\mathrm{.}6\backslash$mathrm$\{$mH$\}/\backslash$mathrm$\{$km$\}\backslash ).$ The voltage at the receiving end is required to be kept constant at $10\mathrm{.}2$ kV $.$ Find sending end voltage and voltage regulation.