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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 6
31.
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.
1.8
12.4
186.2
736.4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Laminar flow is characterised by the nonexistence of
pressure fluctuation.
eddies.
deviating velocities.
all (a), (b)&(c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.
equivalent
transition
Prandtl mixing
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Select the correct practical example of steady non-uniform flow.
Motion of water around a ship in a lake.
Motion of river around bridge piers.
Steadily decreasing flow through a reducing section.
Steadily increasing flow through a pipe.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.
two
three
four
eight
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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