To produce a discharge of 3.3 m 3 /s, a Francis turbine will be operated at a speed of 60 rpm, r 1 = 1.5 m, r 2 = 1.20 m, B = 33 cm, β 1 = 85°, and β 2 = 165°. What should (a) α1 be for non separating...

To produce a discharge of 3.3 m³/s, a Francis turbine will be operated at a speed of 60 rpm, r₁
= 1.5 m, r₂
= 1.20 m, B = 33 cm, β₁
= 85°, and β₂
= 165°. What should (a) α1 be for non separating flow to occur through the runner? What (b) power and (c) torque should result with this operation? Assume T = 10°C.