Air enters a steady-flow turbine. The conditions of the air entering and leaving the turbine are as follows

Air enters a steady-flow turbine. The conditions of the air entering and leaving the

turbine are as follows: inlet, 300 kPa and 52°C; exit, 100 kPa and 12°C. The mass

flow rate is 10 kg/s. Heat transfer from the turbine to the surroundings and the

kinetic and potential energy effects are negligible. Calculate the power developed

by the turbine. Determine whether the process in the turbine is reversible. If not,

determine the isentropic efficiency of the turbine.