Discussion
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- Question
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
- Correct Answer
- 1.25
- 1. 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
- 2. __________ 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
- 3. 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
- 4. Maximum plate efficiency is achieved in case of __________ flow.
Options- A. split
- B. cross
- C. cascade
- D. reverse Discuss
- 5. Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or __________ times the column diameter, whichever is lower.
Options- A. 2.5-3.0
- B. 5-7.5
- C. 10-12.5
- D. 15-20 Discuss
- 6. 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
- 7. 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
- 8.
for couplings and unions would be
Options- A. 60
- B. 200
- C. 350
- D. negligible Discuss
- 9. 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
- 10. 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
Process Equipment and Plant Design problems
Search Results
Correct Answer: 3.8
Correct Answer: Packed
Correct Answer: 0 to 0.08
Correct Answer: cross
Correct Answer: 2.5-3.0
Correct Answer: both (b) and (c)
Correct Answer: 1-2
Correct Answer: negligible
Correct Answer: Flat plate extending across the wall
Correct Answer: pd/4t
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