Q$3(5$pts$)$: What is the theoretical maximum efficiency of a powerplant where the steam is exhausting off the stack to outside at $200$ C $,$ and the steam coming directly off the boiler is $550$ C $?$

Q$4(5$pts$)$: What is the actual efficiency of the powerplant if the electricity put onto the grid for the month was $50$ GWh and the total energy content of the fuel that was burnt $($over the same time period$)$ was $30{10}^{10}$ BTUs?

Q$5(5$pts$)$: If the capacity factor for the plant is $50\%,$ what size must the turbine be$?$ Provide your answer in MW$.$