The optimum value of vane exit angle for a centrifugal pump impeller is_________________?
A. 10-15°
B. 20-25°
C. 30-40°
D. 50-60°
E. 80-90°.
A. 10-15°
B. 20-25°
C. 30-40°
D. 50-60°
E. 80-90°.