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.Management Sciences
Category: Fluid Mechanics for Chemical
What causes convective acceleration in fluid flow ?
A. Steep slope in flow
B. Unsteady nature of flow
C. Non-uniformity of flow
D. Turbulence in flow
Which of the following pipe bends will incur the largest head loss ?
A. U-bend
B. 30° bend
C. 45° bend
D. 90° bend
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 q(x/L)2, what will be axial velocity in the pipe at any „x‟? Assume incompressible one dimensional flow i.e., no gradients in the radial direction ?
A. VX = V0 + q (x3/L2D)
B. VX = V0 + ⅓q (x3/L2)
C. VX = V0 + 2q (x2/LD)
D. VX = V0 + (4/3) q (x3/L2D)
Steady flow occurs, when the__________________?
A. Conditions change steadily with time
B. Conditions are the same at the adjacent points at any instant
C. Conditions do not change with time at any point
D. Rate of the velocity change is constant
The maximum delivery pressure of a reciprocating compressor may be about ______________ kg/cm2?
A. 1000
B. 2000
C. 3000
D. 4000
The continuity equation___________________?
A. Is independent of the compressibility of the fluid
B. Is dependent upon the viscosity of the fluid
C. Represents the conservation of mass
D. None of these
In case of a Rotameter, the density of the float material is _____________ that of the liquid it replaces?
A. More than
B. Less than
C. Equal to
D. Either A. or B.
The momentum correction factor for the velocity distribution of laminar flow is____________________?
A. 1.3
B. 1.66
C. 2.5
D. None of these
The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as_______________?
A. Evaporation
B. Cavitation
C. Sublimation
D. Stripping
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