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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 15
46.
In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)
Vavg
1.2 Vavg
1.5 Vavg
1.8 Vavg
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Centrifugal compressors compared to reciprocating compressors
require less space.
have quieter operation.
have lower operating costs.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
For laminar flow of Newtonion fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )
μ
1/μ
μ
1/μ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the
drag on particles
drag on coloumn walls
bed height
bed voidage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Slugging occurs in a fluidised bed, if the bed is
narrow
deep
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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