An adiabatic steam turbine operates at steady state with inlet conditions of 120 bars, 480℃, and the flow is through an area of 100 cm2 with a velocity of 100 m/s. At the exit, the quality is 90% at 1 bar, and the velocity is 50 m/s. a) List three assumptions and reduce the energy balance equation accordingly. (6 Points) b) Determine the mass flow rate, in kg/s (8 points) c) Determine the power production by the turbine, in kW (8 points) d) Determine the exit area, in m2 (6 points)

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2