A. 1.8
B. 12.4
C. 186.2
D. 736.4
A. Shear stress over the cross-section is proportional to the distance from the surface of the pipe
B. Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the
volume of circumscribing cylinder
C. Velocity profile varies hyperbolically and the shear stress remains constant over the crosssection
D. Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)
A. V2
B. 1/V2
C. 1/V
D. V
A. Brings about no further reduction of
B. Increases
C. Decreases
D. None of these
A. Increase
B. Decrease
C. Remain same
D. Data insufficient to predict pressure drop
A. Geometrical similarity only
B. Dynamic similarity only
C. Both geometrical and dynamic similarity
D. All geometrical, dynamic and kinematic similarity
A. NPSH required
B. BHP required by the pump
C. Head of the liquid pumped
D. All A., B. and C.