A. 4f (L/D) (v2/2gc) ρ
B. 32 (μLV/gc D2)
C. 16/NRe
D. (fLρ/D) (v2/2gc)
A. Velocity and relative roughness
B. Head loss and velocity
C. Reynold number, relative roughness and head loss
D. Reynolds number and friction factor
A. Parabolic
B. Flat
C. Flat near the wall and parabolic in the middle
D. Parabolic near the wall and flat in the middle
A. Increase
B. Decrease
C. Remain same
D. Data insufficient to predict pressure drop
A. Centrifugal pump
B. Reciprocating pump
C. Gear pump
D. Axial flow pump
A. More
B. Less
C. Equal
D. Either A. or B.; depends on the viscosity of the fluid
A. Increasing the impeller speed and the volute area
B. Increasing the number of vanes in the impeller
C. Mounting of two or more impellers in series on a single shaft
D. Either of A., B. or C.