Find the velocity diagrams at the mean, hub and tip diameters of an axial flow water pump based upon the free-vortex design. The mean diameter velocity diagram has an axial inlet with a flow coefficient of 0.3 and a work coefficient if -0.208. The tip diameter to mean diameter and the hub diameter to mean diameter ratios are 1.25 and 0.75 respectively. The blade velocity at the mean diameter is 60m/s .