Minimum fluidisation velocity for a specific system depends upon the___________________? A. Particle size B. Fluid viscosity C. Density of both the particle & the fluidD. All A., B. and C.
In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is___________________? A. The velocity of sound B. Dependent on its cross-sectional area C. Dependent on fluid viscosity D. Dependent on fluid density
Pressure drop for laminar fluid flow through a circular pipe is given by__________________? A. 4f (L/D) (v2/2gc) ρB. 32 (μLV/gc D2) C. 16/NRe D. (fLρ/D) (v2/2gc)
The hydraulic diameter of an annulus of inner and outer radii Ri and Ro respectively is___________________? A. 4(Ro-Ri) B. √(Ro-Ri)C. 2(Ro-Ri) D. Ro + Ri
A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V0. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area…
Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems? A. Non-viscousB. Viscous C. Turbulent D. Rotational
The head loss in turbulent flow in a pipe varies_________________? A. Directly as the velocity B. Inversely as the square of the velocityC. Approximately as the square of the velocity D. Inversely as the square of the diameter
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water column in case of mercury-water, differential manometer is equal to (where,…
Which of the following produces maximum pressure difference for transportation of gases ? A. Vacuum pumps B. Blowers C. FansD. Compressors
Bernoulli’s equation is dependent on the__________________? A. First law of thermodynamics B. Third law of thermodynamics C. Law of conservation of momentumD. None of these