A $230-$kV$,100-$km$,60-$Hz$,$ three$-$phase overhead transmission line with a rated current of $900$ A$/$phase has a series impedance z $=0\mathrm{.}088+$ j$0\mathrm{.}465/$km and a shunt admittance y $=$ j$3\mathrm{.}524$S$/$km$.($a$)$ Obtain the nominal equivalent circuit in normal units and in per unit on a base of $100$ MVA $($three phase$)$ and $230$ kV $($line$-$to$-$line$).($b$)$ Determine the three$-$phase rated MVA of the line. $($c$)$ Compute the ABCD parameters. $($d$)$ Calculate the SIL.