Height of liquid in agitation tank is normally maintained equal to the tank diameter. However, if the tank is too tall and a large liquid hold up is desired, then two or more impellers mounted on the same shaft may be used. The clearance between the tank bottom and the bottom most impeller should be about (where, D = impeller diameter) ?
Correct answer: B. D
- A. 0.5 D
- B. D
- C. 1.5 D
- D. 2 D
Explanation
For a tank with multiple impellers, the bottom impeller is commonly positioned about one impeller diameter above the tank bottom to ensure adequate circulation throughout the lower region. A much smaller clearance can leave poorly mixed zones near the bottom.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Angle of nip of the crushing rolls does not depend upon the_______________?
Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines ?
Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?
Which of the following mechanical conveyors does not come under the division „carriers‟ ?
Hydrogenation of oil is carried out in a/an _______________ in Vanaspati manufacturing plant?
Smoke is an example of ___________________?