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Biochemical Engineering - Agitation and Aeration

Exercise : Agitation and Aeration - Section 1
1.
Swirling and vortex formation can be prevented by
using baffles
using diffusion ring with turbines
both (a) and (b)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Power number is expressed as
P0 / N2Di3ρ
P0 / N3Di5ρ
P0 / N3Di3ρ
P0 / N2Di2ρ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The power consumption in a stirring vessel can be assessed by using a
dynamometer
strain gauge attached to agitator shaft
watt meter attached to agitator motor
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Surface renewal theory predicts that the mass transfer coefficient is
directly proportional to the square root of the molecular diffusivity
inversely proportional to the square root of the molecular diffusivity
directly proportional to the cube root of the molecular diffusivity
indirectly proportional to the cube root of the molecular diffusivity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The oxygen transfer rate in a bioreactor will increase if
oil is added
antifoam is added
detergent like molecules are added
increase in the reactor temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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