Steam at 15 MPa and 480 C enters a turbine operating at steady state with a volumetric flow rate of 800 m^3/min. Eighteen percent of the entering mass flow exits at 500 kPa, 240 C, with a velocity of 25 m/s. The rest exist at another location with a pressure of 10 kPa, quality 94% and velocity 400 m/s. Determine the diameters of each exit ducts and the power produced by the turbine. Assume negligible changes in kinetic energy.