TEST 7 The following particulars apply to a two-row velocity compounded impulse stage of a turbine: nozzle angle 17, mean blade speed 125 m/s; exit angles of the first row moving blades, the fixed blades, and the second row moving blades 22, 26 and 30, respectively; blade friction factor for each row 0.9. Assume that the absolute velocity of steam leaving the stage is in the axial direction. Draw the velocity diagrams for the stage and obtain (a) the absolute velocity of steam leaving the stage, (b) the diagram work, and (c) the diagram efficiency.