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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 13
6.
For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is
more
less
equal
more or less, depending on the type of particle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Specific speed of a centrifugal pump relates it with another pump having the
dynamic similarity
same efficiency
same speed
geometrical similarity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Air vessel fitted to a reciprocating pump
increases the work done.
decreases the work done.
causes cavitation.
results in non-uniform discharge.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Deformation drag, which is caused by widespread deformation of fluid around the immersed body
occurs when NRe is very small.
is primarily a friction drag.
is independent of body length.
depends mainly on cross-sectional shape.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
In isotropic turbulence, the __________ are equal to each other.
temporal velocity components
mean square of velocity fluctuations in the three co-ordinate directions
root mean square of velocity fluctuations in the three co-ordinate directions
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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