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Biochemical Engineering - Agitation and Aeration

Exercise : Agitation and Aeration - Section 3
16.
Laminar flow range of mixing speed is obtained for
Rei<10
10<Rei<104
Rei>104
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Which of the following number is calculated from the diameter and peripheral speed of the impeller?
Reynolds number
Froude number
Power number
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A higher liquid height will lead to a higher gas hold up by which the oxygen transfer rate will be
higher throughout the reactor
lower throughout the reactor
higher at the base of the reactor
lower at the base of the reactor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The main function of the dimples provided in the cooling jacket is to
increase the level of turbulence of the cooling water in the jacket
increase the residence time of the cooling water in the jacket
increase the cooling water-jacket wall boundary layer size
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The power required by an agitator operating in a gas-sparged system is
lesser than the power required by an impeller in operating at same speed in a gas free system
more than the power required by an impeller in operating at same speed in a gas free system
same as the power required by an impeller in operating at same speed in a gas free system
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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