a $25$km$,34\mathrm{.}5$kV$,60$Hz three phase like has a positive sequence series impedance z $=0\mathrm{.}19+$j$0\mathrm{.}34$ the load at the receiving end absorbs $10$MVA wt $33$kV$.$ assuming a short like calculate $($a$)$ the ABCD parameters $($b$)$the sending end voltage for a load power factor of $0\mathrm{.}9$ lagging $($c$)$ the sending end voltage for a load power factor of $0\mathrm{.}9$ leading