Discussion
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- Question
__________ shapedroof is the most commonly used roof for cylinderical storage tanks.
Options- A. Conical
- B. Flat
- C. Dome
- D. Umbrella
- Correct Answer
- Conical
- 1. Diameter of the seive tray column is determined by the
Options- A. lower limit of vapour velocity.
- B. upper limit of the vapour velocity.
- C. hole diameter of the seive tray.
- D. height of the plate spacing. Discuss
- 2. A perforated plate has holes of diameter dn arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by
Options- A. (ph - dh)/ph
- B. (ph - dh . dt/2)/ph
- C. (ph - dt)/ph
- D. (ph - dh)/dh Discuss
- 3. Normal screwed fittings are used for pipes upto a diameter of __________ inches.
Options- A. 1.5
- B. 3
- C. 5
- D. 7 Discuss
- 4. Pick out the wrong statement pertaining to 'Horton sphere' used for the storage of liquid ammonia.
Options- A. Diameter of Horton sphere is normally 6 to 25 metres and it is supported by 6 to 12 nos. tubular or rolled section column.
- B. Thickness of spherical shell is half that of the cylinderical vessel under same operating pressure condition. Besides, the ratio of surface area to volume is less for sphere than any other shape ; hence insulation required is less.
- C. Horton sphere is used for the storage of gases and volatile liquid at a moderate pressure of 1 to 10 kg/cm2 .
- D. Horton sphere is used for the storage of liquid at sub-zero temperature at very high pressure upto 200 kg/cm2 . Discuss
- 5. Which of the following types of reactors is the safest from operation point of view?
Options- A. A vapor phase reactor.
- B. Pot type reactor.
- C. A liquid phase reactor.
- D. A liquid phase catalytic reactor. Discuss
- 6. In the design of a paddle agitator, the ratio
is normally taken as
Options- A. 0.1
- B. 0.8
- C. 0.25
- D. 0.5 Discuss
- 7. In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is
Options- A. < 10
- B. > 10
- C. > 20
- D. 30 Discuss
- 8. __________ is the determining factor for the number of bubble caps to be used per tray.
Options- A. Permissible slot velocity
- B. Tray diameter
- C. Liquid load
- D. Vapor load Discuss
- 9. At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure
Options- A. increases
- B. decreases
- C. remains same
- D. may increase or decrease depending upon the solubility of the gas in the liquid Discuss
- 10. If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of
Options- A. D/2 or minimum 2" to 5D.
- B. D/5 or minimum 2" to 5D.
- C. D/5 or minimum 2" to D.
- D. none of these. Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: upper limit of the vapour velocity.
Correct Answer: (ph - dt)/ph
Correct Answer: 3
Correct Answer: Horton sphere is used for the storage of liquid at sub-zero temperature at very high pressure upto 200 kg/cm2 .
Correct Answer: A vapor phase reactor.
Correct Answer: 0.8
Correct Answer: > 10
Correct Answer: Permissible slot velocity
Correct Answer: remains same
Correct Answer: D/5 or minimum 2" to 5D.
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