$5.$ The system in fig. $3$ shows a network in p$.$u$.$ on base $\backslash (100\backslash$mathrm$\{$MVA$\},11\backslash$mathrm$\{$kV$\}\backslash ).$ The generator deliver $1\mathrm{.}2$ p$.$u$.$ power, busbars voltages $1\mathrm{.}0$ p$.$u$.$ A $3$ ph fault occurs at point $\backslash ($ P $\backslash )$ near load bus find the power angle generator power and swing equations for the generator before, during and after fault.

Also Find the critical clearing angle and time.