$30$ MVA, $13\mathrm{.}8$ kV three$-$phase generator has a sub$-$transient reactance of $15\%.$ The generator supplies motor over a transmission line having transformers at both ends. The rated input of the motor $20$ MVA at $12\mathrm{.}5$ kV with sub$-$transient reactance $15\%.$ The three$-$ phase transformer rated $35$ MVA, $13\mathrm{.}2-115$ kV $($A$/$Ycarthed$)$ with leakage reactance of T$\_\{1$k$\}10\%.$ Transformer is composed of three single phase transformers each rated $10$ MVA, $12\mathrm{.}5-67$ kV $($Yearthed$/$Yearthed$)$ with leakage reactance of $10\%.$ Series reactance of the transmission line is $80-2.$ Draw the reactance diagram with all reactance marked in per unit. Select the generator rating as s base. Caleulate the generator internal voltage.