Discussion
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- Question
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. Pick out the wrong statement.
Options- A. Rivetting provides a permanent fastening method.
- B. The joint made by overlapping of one plate over the other, and then rivetting the two plates together with two rows of rivets is called 'double rivetted butt joint'.
- C. Shank diameter of the rivets should be less than the size of the hole drilled in the plate for rivetting.
- D. The efficiency of a rivetted joint is the ratio of the strength of the rivetted joint to the strength of the solid plate. Discuss
- 2. Cylindrical pressure vessels in horizontal condition is generally supported on a __________ support.
Options- A. lug
- B. skirt
- C. saddle
- D. guy wire Discuss
- 3. Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?
Options- A. Triangular pitch.
- B. Square pitch.
- C. Diagonal square pitch.
- D. Heat transfer rate is independent of tube arrangement. Discuss
- 4. For turbine agitator, the impeller diameter is about
Options- A. 0.3 to 0.5 d
- B. 0.1 to 0.2 d
- C. 0.65 to 0.85 d
- D. 0.95 d Discuss
- 5. In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.
Options- A. increases
- B. decreases
- C. remains same
- D. none of these Discuss
- 6. A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
Options- A. 45
- B. 60
- C. 80
- D. 95 Discuss
- 7. Welded joint efficiency in the design of chemical process equipment is taken as
Options- A. 0.55
- B. 0.75
- C. 0.85
- D. 0.95 Discuss
- 8. Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.
Options- A. CO2
- B. SO2
- C. NH3
- D. none of these Discuss
- 9. The equivalent diameter for pressure drop is __________ that for heat transfer.
Options- A. smaller than
- B. greater than
- C. equal to
- D. not related with Discuss
- 10. Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder
Options- A. has greater structural strength.
- B. is easy to fabricate.
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: The joint made by overlapping of one plate over the other, and then rivetting the two plates together with two rows of rivets is called 'double rivetted butt joint'.
Correct Answer: saddle
Correct Answer: Triangular pitch.
Correct Answer: 0.3 to 0.5 d
Correct Answer: decreases
Correct Answer: 80
Correct Answer: 0.85
Correct Answer: NH3
Correct Answer: not related with
Correct Answer: both (a) and (b).
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