Air enters an insulated turbine operating at a steady-state with a pressure of 5 bar, a temperature of 500 K and a flow rate (volumetric) of 3 m3 /s. At the exit, the pressure of 1 bar. The isentropic efficiency of this turbine is 76.7%. Letting T 0= 20∘C and p 0=1 bar, employing the ideal gas model, and ignoring the effects of motion and gravity. Finda) the power developed by this turbineb) the exergy destruction ratec) the energetic efficiency of this turbine.