logo

CuriousTab

CuriousTab

Discussion

Home ‣ Chemical Engineering ‣ Process Equipment and Plant Design Comments
  • Question

  • Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.


  • Options
  • A. half
  • B. equal to
  • C. twice
  • D. eight times

  • Correct Answer
  • twice 

    • Process Equipment and Plant Design problems

    Search Results

    • 1. The normal range of velocity of steam in pipes is __________ m/sec.

    • Options
    • A. 0.1-0.5
    • B. 1-5
    • C. 10-20
    • D. 80-100
      • Discuss
    • 2. The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

    • Options
    • A. < 30
    • B. < 7
    • C. > 7 < 15
    • D. > 20 < 50
      • Discuss
    • 3. Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

    • Options
    • A. rupture diaphragm
    • B. dikes
    • C. surge chamber
    • D. none of these
      • Discuss
    • 4. The retention time of material in a rotary dryer depends upon its

    • Options
    • A. rpm
    • B. slope & length
    • C. flights arrangement
    • D. all (a), (b) and (c)
      • Discuss
    • 5. Pressure drop due to pipe fittings can be estimated by the equation,
      , where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (dimensionless) for 45° elbow and 180° close return bends would be respectively around

    • Options
    • A. 5 and 10
    • B. 45 and 75
    • C. 180 and 300
    • D. 300 and 500
      • Discuss
    • 6. In the agitators, the power required will be changed with the increase of diameter of agitator (D) as

    • Options
    • A. D2
    • B. D5
    • C. D
    • D. D9
      • Discuss
    • 7. With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

    • Options
    • A. decreases very rapidly
    • B. increases very rapidly
    • C. remains constant
    • D. increases linearly
      • Discuss
    • 8. An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

    • Options
    • A. an increase in liquid viscosity.
    • B. an increase in relatived volatility for rectification columns.
    • C. decrease in gas solubility for absorbers.
    • D. all (a), (b) and (c).
      • Discuss
    • 9. What is the slope of the operating line in the stripping section of a distillation column?

    • Options
    • A. 0
    • B. ?
    • C. > 1
    • D. < 1
      • Discuss
    • 10. The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

    • Options
    • A. 0.5 to 1
    • B. 1 to 1.5
    • C. 1.5 to 2
    • D. 2 to 2.5
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.