Biochemical Engineering - Agitation and Aeration

Exercise :: Agitation and Aeration - Section 3

21. 

Which of the following will have the largest interfacial area per unit volume?

A. A bubble with a diameter of 1 mm
B. A bubble with a diameter of 5 mm
C. A bubble with a diameter of 15 mm
D. A bubble with a diameter of 50 mm

Answer: Option A

Explanation:

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

22. 

Which device is commonly used for measuring the rate of rotation (rpm) of the stirrer shaft?

A. Anemometer
B. Manometer
C. Tachometer
D. Barometer

Answer: Option C

Explanation:

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

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