Fluid Mechanics - Chemical Engineering Questions and Answers

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The Prandtl mixing length is

Zero at the pipe wall and is a universal constant

Independent of radial distance from the pipe axis

Independent of the shear stress

Useful for computing laminar flow problems

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Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the

Back flow of fluid in the event of stoppage of pump

Discharge pressure

Flow of liquid during operation of the pump

All of the above

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The unit of velocity head is

ft-lb/sec

ft-lb/ft³

ft-lbf/lb

ft-lbf/sec

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Which of the following exemplifies a three dimensional fluid flow ?

Fluid flow at the inlet to a nozzle

Fluid flow between parallel plates

Viscous fluid flow between converging plates

None of these

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The ratio of actual discharge to theoretical discharge through an orifice is equal to

C_c . C_v

C_c . C_d

C_v . C_d

C_d/C_v

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A differential pressure cell is used for

Measuring small pressure difference in gases

Measuring small pressure difference in liquids

Remote recording of pressure difference

Measuring the difference of the impact & the static pressure

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In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is

0.44

0.044

4.4

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Volume of liquid displaced by a floating body is equivalent to its

Own weight

Submerged weight

Own volume

Submerged volume

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Euler's equation of motion is a statement expressing

Conservation of mass

Conservation of energy

Newton's first law of motion

Newton's second law of motion