The following statement applies to Q3 and Q4.

A two-dimension radial pump is shown in the Figure 2 that handles water flow rate of 0.075 m³/s. The

blades are placed only on the azimuthal-radial plane with radii equal to 6 cm and 9 cm for the inlet and

exit; respectively. The blade is of backward vane tilted at 30° from the radial direction. The exit relative

velocity is 8.5 m/s. The rotor of the pump runs at 1100 RPM.

3- What is the inlet blade angle (degrees)? The angle is between the relative velocity and radial

direction.

a) 20.76

b) 24.46

c) 22.63

4- What is the exit absolute velocity (m/s)?

a) 10.20

b) 9.57

c) 10.87

d) 26.23

d) 11.99

e) 29.01

e) 9.00