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- Question
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").
Options- A. half
- B. three fourth
- C. equal to
- D. 1.5 times
- Correct Answer
- equal to
- 1. Scale up problem in design based on the similarity concept takes into account __________ similarity.
Options- A. geometrical
- B. kinematic
- C. dynamic
- D. all (a), (b) and (c) Discuss
- 2. Liquid gradient over a tray can be minimised by
Options- A. providing a higher skirt clearance or a higher weir.
- B. decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must flow.
- C. using split flow, radial flow or cascade flow for column diameter large than 4 ft.
- D. all (a), (b) and (c). Discuss
- 3. Pressure differential maintained across a continuous rotary vacuum filter is in the range of __________ mm Hg column.
Options- A. 50 to 100
- B. 100 to 150
- C. 250 to 500
- D. 600 to 700 Discuss
- 4. In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be
Options- A. same as that for fluid flow.
- B. less than that for fluid flow.
- C. more than that for fluid flow.
- D. D2 - D1 (D1 and D2 are I.D. of inner and outer pipes respectively). Discuss
- 5. The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always
Options- A. 1
- B. < 1
- C. >1
- D. equal to the order of reaction Discuss
- 6. Cylinderical shell thickness of rotary drier is generally __________ mm.
Options- A. 2-3
- B. 18-22
- C. 6-8
- D. 12-15 Discuss
- 7. In nuclear reactions, __________ number is conserved.
Options- A. mass
- B. atomic
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 8. Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at
Options- A. Alwaye (in Kerala)
- B. Jadugoda (in Jharkhand)
- C. Kalpakkam (in Tamilnadu)
- D. Gopalpur coast (in Orissa) Discuss
- 9. Which of the following isotopes is not present in natural uranium?
Options- A. U-238
- B. U-234
- C. U-235
- D. U-232 Discuss
- 10. In a pressurised water reactor (PWR), the
Options- A. fuel is natural uranium and heavy water acts both as moderator & coolant.
- B. coolant water boils in the core of the reactor.
- C. coolant water is pressurised to prevent bulk boiling of water in the core.
- D. use of moderator is not required. Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: all (a), (b) and (c)
Correct Answer: all (a), (b) and (c).
Correct Answer: 250 to 500
Correct Answer: more than that for fluid flow.
Correct Answer: >1
Correct Answer: 6-8
Correct Answer: both (a) & (b)
Correct Answer: Jadugoda (in Jharkhand)
Correct Answer: U-232
Correct Answer: coolant water is pressurised to prevent bulk boiling of water in the core.
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