Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 71 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Air vessel provided in a reciprocating pump is for__________________?
A. Increasing the acceleration head
B. Making the friction in pipe uniform
C. Decreasing the acceleration head
D. None of these
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For water, when the pressure increases, the viscosity_________________?
A. Also increases
B. Decreases
C. Remain constant
D. First decreases, and then increases
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Foot valve provided in the pump is a ______________ valve?
A. Direction control
B. Back pressure
C. Relief
D. Pressure reduction
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For the production of very high vacuum, a _____________ pump is normally used?
A. Diffusion
B. Centrifugal
C. Jet ejector
D. Piston
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Bernoulli’s equation is dependent on the__________________?
A. First law of thermodynamics
B. Third law of thermodynamics
C. Law of conservation of momentum
D. None of these
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Which of the following produces maximum pressure difference for transportation of gases ?
A. Vacuum pumps
B. Blowers
C. Fans
D. Compressors
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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, H = difference in height of mercury column in mm)?
A. H
B. 12.6 h
C. 13.6 h
D. 14.6 h
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The head loss in turbulent flow in a pipe varies_________________?
A. Directly as the velocity
B. Inversely as the square of the velocity
C. Approximately as the square of the velocity
D. Inversely as the square of the diameter
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Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems?
A. Non-viscous
B. Viscous
C. Turbulent
D. Rotational
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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)
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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