Steam flows from a set of nozzles of a single-stage impulse turbine at a2 = 78? with the velocity V 2 = 305 m/s. The blade speed is U = 146 m/s. The outlet flow angle of the relative velocity is 3?...

Steam flows from a set of nozzles of a single-stage impulse turbine at a2 = 78? with the velocity V 2 = 305 m/s. The blade speed is U = 146 m/s. The outlet flow angle of the relative velocity is 3? greater than its inlet angle, and the velocity coefficient is c R = 0.84. The nozzle velocity coefficient is cN = 1. The power delivered by the wheel is 1000 kW. Draw the velocity diagrams at the inlet and outlet of the blades. (a) Find the angle at which the relative velocity leaves the rotor. (b) Calculate the mass flow rate of steam.