Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 33 of 73)

Attempt Fluid Mechanics for Chemical Quiz
In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure ______________ the vapor pressure of the liquid at the suction temperature?
A. Lower than
B. Higher than
C. Equal to
D. None of these
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A centrifugal pump is called a turbine pump, if it is having a_________________?
A. Turbine type impeller
B. Vaned diffusion casing
C. Rotating vaned volute
D. None of these
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The velocity profile exhibited by laminar flow of Newtonian fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an ______________ with the apex at the centre line of the pipe?
A. Hyperbola
B. Parabola
C. Semi-circle
D. Semi-ellipse
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The hydrodynamic and thermal boundary layers will merge, when ____________________?
A. Prandtl number is one
B. Schmidt number tends to infinity
C. Nusselt number tends to infinity
D. Archimedes number is greater than 10000
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The energy equation, E + (p/ρ) + (V2/2g) + gZ = constant (E = internal energy/mass), is applicable to___________________?
A. Perfect gases only
B. Isothermal flow of gases
C. Adiabatic unsteady flow of gases
D. All compressible fluids
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A Rotameter works on the principle of _______________ pressure drop?
A. Constant
B. Variable
C. Both a. & b.
D. Neither a. nor b.
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The equivalent diameter for flow through a rectangular duct of width B and height H is___________________?
A. Hb/2 (h + b)
B. Hb/(h + b)
C. 2hb/(h + b)
D. 4hb/(h + b)
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Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?
A. Temperature
B. Pressure
C. Both a. & b.
D. Neither a. nor b.
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Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?
A. At the centre
B. At d/4 from the wall
C. At the wall
D. At d/8 from the wall
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Upto what value of ‘Mach number’, a fluid may be considered as incompressible ?
A. 0.03
B. 0.3
C. 3
D. 10
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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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