6 92 WP Water vapor at 5 bar 320 C enters a turbine operating at steady state with a volumetric flow rate of 0 65 m s and expands adiabatically to an exit state of 1 bar 160 C Kinetic and potential energy effects are negligible Determine for the turbine a the power developed in kW b the rate of entropy production in kW K and c the isentropic turbine efficiency