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Biochemical Engineering - Fluid Flow

Exercise : Fluid Flow - Section 1
  • Fluid Flow - Section 1
1.
The viscosity of liquid was classified as both dilatant and rheopectic, which means that the viscosity
increased with stirring speed but decreased with mixing time
increased with stirring speed and increased with mixing time
decreased with stirring speed but increased with mixing time
decreased with stirring speed and decreased with mixing time
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Which of the following describes the detrimental effect of bubbles on animal cells?
Cells trapped on the surface of bubbles can be damaged when the bubbles explode, releasing their pressure and surface energies
Cells trapped in the moving foam can be dragged apart by the bubbles
Both (a) and (b)
Bubbles can explode in the liquid medium causing the release of ultraviolet radiation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
A fluid in which the viscosity decreases with increasing stirrer speed and mixing time, can be represented as
newtonian fluid
pseudoplastic, thixotropic fluid
dilatant, rheopectic fluid
dilatant, pseudoplastic fluid
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Filamentous fungal cells are more shear sensitive than bacterial cells because of
the presence of citin in cell walls of filamentous fungi
larger in size than bacterial cells and therefore are more susceptible to shear forces
fungal cells are much larger than bacterial cells
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The viscosity of water at STP is approximately
0.005 kg.m-1.s-1
0.001 kg.m-1.s-1
0.003 kg.m-2.s-1
0.1 g.cm-1.s-1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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