A steam turbine receives a steam flow of 1.35 kg/s and the power output is 500 kW. The heat loss from casing is negligible. Calculate
1) The change of specific enthalpy across turbine when the velocities at entrance and exit and the difference in elevation are negligible.
2) The change of specific enthalpy across the turbine when the velocity at entrance is 60 m/s, the velocity at exit is 360m/s and the inlet pipe is 3m above the exhaust pipe.