Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 68 of 73)

Attempt Fluid Mechanics for Chemical Quiz
What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?
A. 0.5
B. 0.67
C. 1
D. 2
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Turbine impeller____________________?
A. Produces only radial current
B. Produces only tangential current
C. Is effective over wide range of viscosities
D. Does not produce tangential current
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One dimensional fluid flow implies the ________________________?
A. Flow in straight lines only
B. Uniform flow
C. Steady uniform flow
D. Flow in which transverse components are zero
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For laminar flow through a closed conduit____________________?
A. Vmax = 2vav
B. Vmax = vav
C. Vmax = 1.5vav
D. Vmax = 0.5vav
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Each term in Bernoulli‟s equation represents the _____________ of the fluid?
A. Energy per unit mass
B. Energy per unit weight
C. Force per unit mass
D. None of these
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For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is________________?
A. More
B. Less
C. Equal
D. Independent of porosity
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The equivalent diameter for pressure drop calculation for a fluid flowing through a rectangular cross-section channels having sides ‘x’ & ‘y’ is given by_________________?
A. 2xy/(x + y)
B. Xy/(x + y)
C. (x + y)/2xy
D. (x + y)/xy
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The nominal size of a hose pipe is specified by its _________________?
A. I.d.
B. O.d.
C. Thickness
D. None of these
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An equipotential line is _____________ to the velocity vector at every point?
A. Normal
B. Parallel
C. Tangential
D. None of these
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A Newtonian liquid (ρ = density, μ = viscosity) is flowing with velocity „v‟ in a tube of diameter ‘D’. Let Δp be the pressure drop across the length ‘L’. For a laminar flow, Δp is proportional to_________________?
A. Lρv2/d
B. Lμv/d2
C. Dρv2/l
D. Μv/l
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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