An axial-flow hydraulic turbine operates with a head of 20 m at turbine entry and develops 10 MW when running at 250 rpm. The blade tip diameter is 3 m, the hub diameter is 1.25 m, and the runner design is based upon a "free vortex." Assuming the hydraulic efficiency is 94%, the overall efficiency is 92%, and the flow at exit is entirely axial, determine the absolute and relative flow angles upstream of the runner at the hub, mean, and tip radii.