Discussion
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- Question
Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripping and humidification/dehumidification. HETP which is experimentally determined, depends upon the
Options- A. flow rates of each fluid.
- B. type and size of packing.
- C. concentration of each fluid.
- D. all a, b & c.
- Correct Answer
- all a, b & c.
- 1. In a __________ rivetted joint, the rivets in the various rows are opposite to each other.
Options- A. zig-zag
- B. chain
- C. diamond
- D. none of these Discuss
- 2. Thickness of the frame of a plate and frame filter as compared to that of plates is
Options- A. less
- B. same
- C. more
- D. either (a) or (b) Discuss
- 3. Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )
Options- A. 0.2 D
- B. 0.5 D
- C. 0.66 D
- D. 0.80 D Discuss
- 4. Vertical vessels are not supported by
Options- A. brackets
- B. skirts
- C. columns
- D. saddles Discuss
- 5. The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
Options- A. 0
- B. ?
- C. 1
- D. minimum Discuss
- 6. Pick out the wrong statement:
Options- A. The tensile strength of a brittle material is less than its compressive strength.
- B. The compressive strength of a ductile materia] is less than its tensile strength.
- C. In a thick cylindrical shell, the hoop stress is maximum at the inner radius.
- D. The value of crushing load is more than that of buckling load for long colmns. Discuss
- 7. Speed of industrial paddle agitator ranges from __________ rpm.
Options- A. 1 to 5
- B. 20 to 100
- C. 500 to 750
- D. 1000 to 2000 Discuss
- 8. Needle valves are generally not used for
Options- A. very large diameter pipes.
- B. high pressure throttling service.
- C. very accurate flow control.
- D. smaller sizes of pipe. Discuss
- 9. Saddle supports are used for supporting __________ vessels.
Options- A. horizontal cylinderical
- B. tall vertical
- C. thick walled vertical
- D. thick spherical Discuss
- 10. Which of the following is used to set the diameter of the distillation column?
Options- A. Number of theorectical plates.
- B. Static submergence.
- C. Allowable vapour velocity.
- D. Length of straight rectangular weir on cross-flow tray. Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: chain
Correct Answer: more
Correct Answer: 0.2 D
Correct Answer: saddles
Correct Answer: ?
Correct Answer: The value of crushing load is more than that of buckling load for long colmns.
Correct Answer: 20 to 100
Correct Answer: very large diameter pipes.
Correct Answer: horizontal cylinderical
Correct Answer: Allowable vapour velocity.
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