Nitrogen, which may be taken as an ideal gas, expands in an adiabatic turbine from 1 MPa and 475oC to a pressure of 200 kPa. Inlet and exit velocities are 100 m/s and 180 m/s, respectively. The power delivered by the turbine is 280 kW. The inlet area is 62.5 cm2. Determine the outlet temperature.