A turbine is supplied with steam at a pressure of $\frac{30}{b}ar$ and a temperature of $400C.$ The

steam then expands isentropically to a pressure of $0\mathrm{.}08$ bar. Find the dryness fraction at

the end of expansion and thermal efficiency of the cycle. If the steam is reheated at $5$ bar

to a temperature of $400C$ and then expanded isentropically to a pressure of $\frac{0\mathrm{.}08}{b}ar,$

what will be the dryness fraction and thermal efficiency of the cycle?

Draw the T$-$s diagram and explain.