A. Mechanical energy balance in potential flow
B. Kinetic energy balance in laminar flow
C. Mechanical energy balance in turbulent flow
D. Mechanical energy balance in boundary layer
A. Steep slope in flow
B. Unsteady nature of flow
C. Non-uniformity of flow
D. Turbulence in flow
A. Varies parabolically across the cross-section
B. Remains constant over the cross-section
C. Is zero at the centre and varies linearly with the radius
D. Is zero at the wall and increases linearly to the centre
A. Gravitational & buoyant
B. Centrifugal & drag
C. Gravitational or centrifugal buoyant drag
D. External, drag & viscous
A. Booster service
B. Pumg liquid fertilisers (e.g. liquid NH3)
C. Pumg industrial wastes
D. All A., B. and C.
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
A. Less than the average velocity through channels
B. More than the average velocity through channels
C. Dependent on the pressure drop across the bed
D. Same as the average velocity through channels