Discussion
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- Question
Longitundinal stress induced in a thin walled cylindrical storage vessel is
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. In condenser, the cooling water is passed in the tube side in a pass arrangement, because
Options- A. it reduces heat transfer area.
- B. more thinner tubes can be used.
- C. pressure drop is reduced.
- D. it makes condenser compact. Discuss
- 2. Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be
Options- A. d
- B. d
- C. 2?d
- D. 2d Discuss
- 3. Reflux ratio variation in a distillation column is between
Options- A. zero and infinity
- B. zero and one
- C. minimum and infinity
- D. none of these Discuss
- 4. In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.
Options- A. 2.5
- B. 7.5
- C. 15
- D. 20 Discuss
- 5. In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
Options- A. 25-50
- B. 50-75
- C. 200-250
- D. 750-1000 Discuss
- 6. A pipe is generally made of circular cross-section, because a circular cross-section has the
Options- A. higher structural strength.
- B. lowest surface area requirement for a given volume.
- C. both (a) & (b).
- D. none of these. Discuss
- 7. In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
Options- A. 1.1 to 1.5
- B. 1.6 to 2
- C. 2.2 to 2.6
- D. 2.7 to 3 Discuss
- 8. For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?
Options- A. hemispherical
- B. ellipsoidal (2 : 1)
- C. conical
- D. flat plate Discuss
- 9. Friction factor for turbulent flow in a new pipe is given by
Options- A.
- B.
- C. f = 0.22 NRe0.5
- D.
Discuss
- 10. Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure?
Options- A. Larger dia vessel.
- B. Smaller dia vessel.
- C. Larger dia long vessel.
- D. Strength of the vessel is same irrespective of the diameter. Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: it reduces heat transfer area.
Correct Answer: d
Correct Answer: minimum and infinity
Correct Answer: 7.5
Correct Answer: 50-75
Correct Answer: both (a) & (b).
Correct Answer: 1.1 to 1.5
Correct Answer: ellipsoidal (2 : 1)
Correct Answer:
Correct Answer: Smaller dia vessel.
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