Steam enters, in a stage of impulse-reaction turbine, with a speed of 280 m/sec at an angle of 22° in the direction of blade motion. The mean diameter of the rotor, which rotates at 3200 rpm, is 1.0 m. The blade height is 10 cm. The specific volume of steam at nozzle outlet and blade outlet are 3.6 m3/kg and 4.1 m3/kg respectively. The turbine develops 620 h.p. Find (i) the weight of steam used per sec, (ii) blade angles, (iii) enthalpy drop in each stage, (iv) degree of reaction and (v) stage efficiency. Assume combined efficiency of nozzles and blades as 90% and carry over coefficient as 0.8.