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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 7
26.
At low Reynolds number
viscous forces are unimportant.
viscous forces control.
viscous forces control and inertial forces are unimportant.
gravity forces control.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
For laminar flow through a closed conduit
Vmax = 2Vav
Vmax = Vav
Vmax = 1.5Vav
Vmax = 0.5Vav
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter.
inverse
square root
second power
first power
Answer: Option
Explanation:
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29.
Unsteady uniform flow is represented by flow through a/an
long pipe at constant rate.
long pipe at decreasing rate.
expanding tube at increasing rate.
expanding tube at constant rate.
Answer: Option
Explanation:
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30.
If Blausius or Darcey friction factor is 'f1' then the Fanning friction factor is equal to
f1/4
4f2
2f1
f1/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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