Discussion
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- Question
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.
- Correct Answer
- Triangular pitch.
- 1. 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
- 2. 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
- 3. Bubble cap plate column is
Options- A. a finite stage contactor.
- B. used only for distillation, not for absorption.
- C. a differential stage contactor.
- D. a continuous contactor. Discuss
- 4. In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.
Options- A. 2.5
- B. 5
- C. 12.5
- D. 17.5 Discuss
- 5. If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.
Options- A. increase by 1.8
- B. decrease by 22
- C. increase by 21.6
- D. none of these Discuss
- 6. Cylindrical pressure vessels in horizontal condition is generally supported on a __________ support.
Options- A. lug
- B. skirt
- C. saddle
- D. guy wire Discuss
- 7. 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
- 8. In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by
Options- A.
- B.
- C.
- D.
Discuss
- 9. 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
- 10. 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
Process Equipment and Plant Design problems
Search Results
Correct Answer: 0.3 to 0.5 d
Correct Answer: decreases
Correct Answer: a finite stage contactor.
Correct Answer: 5
Correct Answer: increase by 21.6
Correct Answer: saddle
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:
Correct Answer: 80
Correct Answer: 0.85
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