Discussion
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- Question
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
- Correct Answer
- not related with
- 1. 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
- 2. 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
- 3. 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
- 4. In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by
Options- A.
- B.
- C.
- D.
Discuss
- 5. 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
- 6. 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
- 7. Safety valves are provided in chemical equipments to guard against excessive
Options- A. temperature
- B. pressure/pressure fluctuation
- C. turbulence
- D. noise Discuss
- 8. Pick out the correct statement
Options- A. Centre to centre distance between two consecutives rivets in a row is called the pitch.
- B. A rivetted joint made in overlapping plates is called butt joint.
- C. Hole size drilled in rivetted plates is less than the actual size of the rivet.
- D. none of these. Discuss
- 9. For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.
Options- A. half
- B. twice
- C. thrice
- D. five times Discuss
- 10. A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of
Options- A. 2
- B. 20.8
- C. 20.2
- D. none of these Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: NH3
Correct Answer: 0.85
Correct Answer: 80
Correct Answer:
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: both (a) and (b).
Correct Answer: pressure/pressure fluctuation
Correct Answer: Centre to centre distance between two consecutives rivets in a row is called the pitch.
Correct Answer: thrice
Correct Answer: 20.8
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