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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 3
16.
A fluid element has a velocity V = -y2 . xi + 2yx2 . j. The motion at (x, y) = (l/2, 1) is
rotational and incompressible
rotational and compressible
irrotational and compressible
irrotational and incompressible
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Check in a centrifugal pump is
provided in the discharge line.
generally a globe valve.
provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Drag force acting on a body does not depend upon the
density of the fluid.
density of the body.
velocity of the body.
projected area of the body.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Centrifugal pump is normally classified on the basis of the
rpm.
type of casing.
impeller blade angle.
number of blades in impeller.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd'?
At the centre
At d/4 from the wall
At the wall
At d/8 from the wall
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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