Steam enters an adiabatic turbine steadily at 6 MPa, 600oC, 50 m/s, and exits at 50 kPa,

Question:

Steam enters an adiabatic turbine steadily at 6 MPa, 600oC, 50 m/s, and exits at 50 kPa, 100oC, 150 m/s. The turbine produces 5 MW. If the ambient conditions are 100 kPa and 20oC, determine
(a) The maximum possible power output,
(b) The second law (exegetic) efficiency and
(c) The irreversibility.
(d) What-if Scenario: What would the irreversibility be if the ambient temperature were at 40oC?