a$)$ Solve problem $4\mathrm{.}39$ in the text $($the conductors are ACSR Cardinal$)$

b$)$ Find the resulting $\backslash (3\backslash$phi $\backslash )$ reactive power initially supplied by the TL

c$)$ Recompute the capacitance when the distance between adjacent conductors is increased from $8$ m to $12$ m $,$ and comment.

$4\mathrm{.}39$ Calculate the capacitance$-$to$-$neutral in F$/$m and the admittance$-$to$-$neutral in S$/$km for the three$-$phase line in Problem $4\mathrm{.}18.$ Also calculate the line$-$charging current in kA$/$ phase if the line is $100$ km in length and is operated at $230$ kV $.$ Neglect the effect of the earth plane.