Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 67 of 73)

Attempt Fluid Mechanics for Chemical Quiz
Creeping flow around a sphere is defined, when particle Reynolds number is___________________?
A. < 2100
B. < 0.1
C. > 2.5
D. < 500
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During ageing of fluid carrying pipes, the__________________?
A. Pipe becomes smoother with use
B. Friction factor increases linearly with time
C. Absolute roughness decreases with time
D. Absolute roughness increases linearly with time
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In fluid flow, the stagnation point is defined as a point, where the _____________ is zero?
A. Flow velocity
B. Pressure
C. Total energy
D. All a., b. and c.
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A hydraulic ram acts as a/an ______________ pump?
A. Centrifugal
B. Reciprocating
C. Impulse
D. Parallel cylinder
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Viscosity of water is about _____________ times that of air at room temperature?
A. 15
B. 55
C. 155
D. 1050
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Sewage sludge is an example of the ______________ fluid?
A. Bingham plastic
B. Newtonian
C. Pseudo plastic
D. Dilatent
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The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is__________________?
A. < 1
B. 1
C. > 1
D. 2
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High specific speed of a pump implies that, it is a/an _____________ pump?
A. Centrifugal
B. Mixed flow
C. Axial flow
D. None of these
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Velocity of liquid hydrocarbon fuels in a pipeline cannot be measured by magnetic flowmeters, because their ______________ is very low/small?
A. Thermal conductivity
B. Electrical conductivity
C. Specific gravity
D. Electrical resistivity
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The friction factor is___________________?
A. Always inversely proportional to the reynolds number
B. Not dimensionless
C. Not dependent on the roughness of the pipe
D. None of these
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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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