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Q9. A centrifugal pump impeller is 1.2 m outside diameter and 0.85 m inside diameter and runs at 720 rpm. The radial velocity at the inlet and the outlet is 27.2 m/s. The tangential component is 16.1 m/s, and the volumetric flow rate throughout is 0.5 m³/s.

Calculate EACH of the following:

(a) the blade outlet angle;

(b) the blade inlet angle;

(c) the width of the impeller at the inlet and outlet;

(d) the power.

Note: the density of water is 1000 kg/m³