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Q9. In a two row velocity compounded impulse turbine stage, steam leaves the nozzles with a velocity of 1000 m/s at an angle of 180 to the plane of rotation. The mean blade velocity is 200 m/s. All the blade rows are symmetrical, and the blade velocity coefficient is 0.9 for both moving rows and for the fixed row.
Determine EACH of the following;
(a) the total blade work per kg of steam; (13)
(b) the diagram efficiency. (3)