Discussion
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- Question
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
- Correct Answer
- 1-2
- 1. 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
- 2. Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.
Options- A. 1.25
- B. 1.75
- C. 2.5
- D. 3.5 Discuss
- 3. In case of plain carbon steel, butt welded joints are used for shell plate thickness ? __________ cms.
Options- A. 1.2
- B. 0.5
- C. 3.8
- D. 6.8 Discuss
- 4. __________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.
Options- A. Sieve plate
- B. Packed
- C. Bubble cap plate
- D. None of these Discuss
- 5. Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.
Options- A. 0 to 0.08
- B. 0 to 0.8
- C. 0 to 1.5
- D. 0 to 2.2 Discuss
- 6.
for couplings and unions would be
Options- A. 60
- B. 200
- C. 350
- D. negligible Discuss
- 7. 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
- 8. 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
- 9. 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 Discuss
- 10. 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
Process Equipment and Plant Design problems
Search Results
Correct Answer: both (b) and (c)
Correct Answer: 1.25
Correct Answer: 3.8
Correct Answer: Packed
Correct Answer: 0 to 0.08
Correct Answer: negligible
Correct Answer: Flat plate extending across the wall
Correct Answer: pd/4t
Correct Answer: l/15th
Correct Answer: preferably flow inside the tube for its easier internal cleaning.
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