Steam enters a turbine operating at steady state at 6 mpa, 600°c with a mass flow rate 125 kg/min and exits as a saturated vapor at 20 kpa. the turbine produces energy at a rate of 2 mw. kinetic and potential energy effects are negligible. the rate of heat loss from the turbine occurs to the air around the turbine at 27°c. a. what is the rate of entropy production for within the turbine? b. what is the isentropic efficiency of the turbine?