in polar form. Enter $\backslash ($ A $\backslash )$ and $\backslash ($ D $\backslash )$ in per unit, $\backslash ($ B $\backslash )$ in $\backslash (\backslash$Omega $\backslash ),$ and $\backslash ($ C $\backslash )$ in S $.$ Enter the phase angles in degrees.$)$

$($b$)$ Calculate the sending$-$end voltage $($line$-$to$-$line, in $\backslash (\backslash$mathrm$\{$kV$\}\_\{\backslash$mathrm$\{$LL$\}\}\backslash ))$ and current $($in kA $).($Enter your answers in polar form. Enter the phase angles in degrees.$)$

$($c$)$ Calculate the sending$-$end power. $($Enter your answer in polar form in MW$.$ Enter the phase angle in degrees.$)$

$\backslash [$

$1<mi>\backslash </mi>$quad $\backslash$circ $\backslash$mathrm$\{$kW$\}$

$\backslash ]$

$($d$)$ Calculate the full$-$load line losses $($in MW$)$ and efficiency $($as a percentage$).$

line losses

efficiency

$\backslash \%$

$($e$)$ Calculate the percent voltage regulation.