$4.[10$ Pts$]$ Consider a Carnot steam engine that involves saturated water vapor at $\backslash (100\{\}^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash )$ and saturated liquid water at $\backslash (300\{\}^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash ).$ Assume the water is in quasi$-$equilibrium with the thermal reservoirs during heat transfer.

$($a$)$ Draw this in T$-$s diagram. Include the saturation lines, process directions, and coordinates. $[2$ Pts$]$ PLEASE SKETCH CLEARLY AND ACCURATELY

$($b$)$ Draw this in $\backslash ($ P$-$v $\backslash )$ and $\backslash ($ T$-$v $\backslash )$ diagrams. Include the saturation lines, process directions, and coordinates. $[6$ Pts$]$ PLEASE SKETCH CLEARLY AND ACCURATELY

$($c$)$ What is the efficiency of this cycle? $[2$ Pts$]$