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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 5
1.
The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is
0.5
1
2
0.33
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.
logarithmic
linear
hyperbolic
parabolic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Maintenance cost of a __________ pump for a particular duty is the least.
centrifugal
reciprocating
volute
gear
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Choking in case of pipe flow means that a
specified mass flow rate can not be achieved.
valve is closed in the line.
restriction in flow cross-section area occurs.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.
thermal conductivity
electrical conductivity
specific gravity
electrical resistivity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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