Question No$\mathrm{.}16$: Consider a steam power plant operating on the Ideal Rankine cycle. Steam enters the turbine at $3$ MPa and $623$ K and is condensed in the condenser at a pressure of $10$ kPa. Determine $($i$)$ the thermal efficiency of this power plant $($ii$)$ the thermal efficiency, if steam is super$-$heated to $873$ K instead of $623$ K$,$ and $($iii$)$ the thermal efficiency, if the boiler pressure is raised to $15$ MPa while the turbine inlet temperature is maintained at $873$ K$.$