Discussion
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- Question
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.
Options- A. l/5th
- B. l/15th
- C. l/30th
- D. l/50th
- Correct Answer
- l/15th
- 1. The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is
Options- A. pd/2t
- B. pd/4t
- C. pd/t
- D. pd/8t Discuss
- 2. Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?
Options- A. Segmental baffle
- B. Flat plate extending across the wall
- C. Disk type baffle
- D. Helical type baffle Discuss
- 3.
for couplings and unions would be
Options- A. 60
- B. 200
- C. 350
- D. negligible Discuss
- 4. The normal range of velocity of water in pipes is __________ m/sec.
Options- A. 0.1-0.5
- B. 1-2
- C. 10-50
- D. 15-30 Discuss
- 5. In distillation columns, bubble caps are held in place over trays by
Options- A. rivets
- B. a hold down bar
- C. bolts
- D. both (b) and (c) Discuss
- 6. When one of the fluids is highly corrosive and has fouling tendency, it should
Options- A. preferably flow inside the tube for its easier internal cleaning.
- B. perferably flow outside the tube.
- C. flow at a very slow velocity.
- D. flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current. Discuss
- 7. What is the slope of the operating line in the rectifying section of a distillation coloumn?
Options- A. 0
- B. ?
- C. > 1
- D. <1 Discuss
- 8. The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.
Options- A. 0.6-0.8 times
- B. equal to
- C. twice
- D. 2 ft irrespective of (for column > 3 ft diameter) Discuss
- 9. In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.
Options- A. chain
- B. diamond
- C. zig-zag
- D. none of these Discuss
- 10. Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of
Options- A. preventing the local overstressing of the shell around the opening.
- B. reduction of discontinuity in shape at the junction.
- C. making the joint leak proof.
- D. none of these. Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: pd/4t
Correct Answer: Flat plate extending across the wall
Correct Answer: negligible
Correct Answer: 1-2
Correct Answer: both (b) and (c)
Correct Answer: preferably flow inside the tube for its easier internal cleaning.
Correct Answer: <1
Correct Answer: 0.6-0.8 times
Correct Answer: diamond
Correct Answer: preventing the local overstressing of the shell around the opening.
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