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Q8. In a 50% reaction turbine stage, steam enters the fixed blades with a velocity of 288 m/s, the blade to steam ratio is 0. 7.5 and the inlet angle is 24°. The mean blade ring diameter ·is 0.4 m.

(a), Sketch the combined velocity diagram, labelling all velocities and angles. (2)

(b,) Determine EACH of the following:

(i) the speed' of rotation of the turbine rotor;

(iii) the blade inlet angles;

(iii) the diagram efficiency.