Biochemical Engineering - Agitation and Aeration

Exercise :: Agitation and Aeration - Section 1

16. 

What is the ratio of depth of liquid in vessel to the diameter of tank (H:Dt)?

A. 1 : 1
B. 2 : 1
C. 4 : 1
D. none of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

17. 

Radial flow impellers

A. provide high shear conditions for breaking up bubbles
B. direct flow towards the walls of the reactor
C. Both (a) and (b)
D. provide low shear conditions and are suited for use in shear sensitive procesess

Answer: Option C

Explanation:

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18. 

Transient flow range of mixing speed is obtained for

A. Rei<10
B. 10<Rei<104
C. Rei>104
D. None of these

Answer: Option B

Explanation:

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19. 

A typical ceiling fan would be best described as a(n)

A. radial flow impeller
B. axial flow impeller
C. intermig impeller
D. Rushton turbine

Answer: Option B

Explanation:

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20. 

What is the ratio of diameter of impeller to the diameter of tank (Da:Dt)?

A. 1 : 3
B. 2 : 1
C. 4 : 1
D. 1 : 5

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.