The velocities on and off the 90-mm-wide blades of the Francis turbine are directed as shown. If V 1 = 18 m/s and the blades are rotating at 80 rad/s, determine the relative velocity of the flow off...

The velocities on and off the 90-mm-wide blades of the Francis turbine are directed as shown. If V₁
= 18 m/s and the blades are rotating at 80 rad/s, determine the relative velocity of the flow off the blades. Also, determine the blade angles

₁
and

₂.

The velocities on and off the 90-mm-wide blades of a Francis turbine are directed as shown. If the blades are rotating at 80 rad/s and the discharge is 1.40 m³/s, determine the power that the turbine withdraws from the water.