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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 9
11.
A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below :
Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units)
If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?
0.2
0.5
0.7
0.8
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Dimension of kinematic viscosity is
MLT-1
L2 . T-1
L2T
L2 . T-2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A streamline is a line in flow field,
that is traced by all the fluid particles passing through a given point.
along which a fluid particle travels.
such that at every point on it, the velocity is tangential to it.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
While starting an axial flow pump, its delivery valve should be kept
open
closed
either open or closed
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
__________ forces do not act in case of fluid flow.
Elastic
Tensile
Vibratory
Centrifugal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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