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  • Question

  • 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

  • Correct Answer
  • ellipsoidal (2 : 1) 

    • Process Equipment and Plant Design problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. Longitundinal stress induced in a thin walled cylindrical storage vessel is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. 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
    • 5. 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
    • 6. Friction factor for turbulent flow in a new pipe is given by

    • Options
    • A.
    • B.
    • C. f = 0.22 NRe0.5
    • D.
      • Discuss
    • 7. 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
    • 8. The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.

    • Options
    • A. 0.1-0.2
    • B. 0.2-0.5
    • C. 0.4-0.9
    • D. 1.2-1.5
      • Discuss
    • 9. In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

    • Options
    • A. 1000
    • B. 3000
    • C. 5000
    • D. 10000
      • Discuss
    • 10. Skirt support is the most suitable for supporting __________ vessels.

    • Options
    • A. small horizontal
    • B. large horizontal
    • C. tall vertical
    • D. thick walled
      • Discuss

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