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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 5
21.
Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump?
Increasing the impeller speed and the volute area.
Increasing the number of vanes in the impeller.
Mounting of two or more impellers in series on a single shaft.
Either of (a), (b) or (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
An equipotential line is __________ to the velocity vector at every point.
normal
abnormal
tangential
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Specific speed for a centrifugal pump is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Path followed by water jet issuing from the bottom of a water tank will be a
parabola (vertex being at the opening).
hyperbola.
horizontal straight line.
zig-zag path (which is geometrically undefined).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Which of the following produces maximum pressure difference for transportation of gases ?
Vaccum pumps
Blowers
Fans
Compressors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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