A. Specified mass flow rate cannot be achieved
B. Valve is closed in the line
C. Restriction in flow cross-section area occurs
D. None of these
A. f1/4
B. 4f2
C. 2f1
D. f1/2
A. NPSH required
B. BHP required by the pump
C. Head of the liquid pumped
D. All A., B. and C.
A. Viscous
B. Laminar
C. Turbulent
D. Transition
A. Angular velocity
B. Specific weight
C. Kinematic viscosity
D. None of these
A. Have the same diameter
B. Have different diameters
C. Are directly coupled
D. None of these
A. Occurs when NRe is very small
B. Is primarily a friction drag
C. Is independent of body length
D. Depends mainly on cross-sectional shape
A. Velocity increases
B. Pressure decreases
C. Both A. & B.
D. Neither A. nor B.
A. The line connecting the mid-points of flow cross-sections
B. Defined for uniform flow only
C. Drawn normal to the velocity vector at every point
D. Always the path of a particle
A. Steep slope in flow
B. Unsteady nature of flow
C. Non-uniformity of flow
D. Turbulence in flow