(Le/D) for couplings and unions would be_______________?

Related Mcqs:

1. What is the slope of the feed line, if the feed to a distillation column is a saturated liquid ?

   A. 0
   B. ∞
   C. > 1
   D. < 1

2. Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?

   A. Segmental baffle
   B. Flat plate extending across the wall
   C. Disk type baffle
   D. Helical type baffle

3. _____________ shaped roof is the most commonly used roof for cylindrical storage tanks?

   A. Conical
   B. Flat
   C. Dome
   D. Umbrella

4. Pick out the wrong statement?

   A. Riveting provides a permanent fastening method
   B. The joint made by overlapping of one plate over the other, and then riveting the two plates together with two rows of rivets is called ‘double riveted butt joint’
   C. Shank diameter of the rivets should be less than the size of the hole drilled in the plate for riveting
   D. The efficiency of a riveted joint is the ratio of the strength of the riveted joint to the strength of the solid plate

5. A binary liquid Azeotropic mixture has boiling point higher than either of the components, when it shows ______________ deviation from Raoult’s Law?

   A. Positive
   B. Negative
   C. No
   D. None of these

6. Maximum allowable vapour velocity in a bubble cap tower is determined by the ____________________?

   A. Entrainment considerations
   B. Vapour density
   C. Diameter of the column
   D. None of these

7. Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about _____________ kcal/hr.m2.°C?

   A. 1250
   B. 2500
   C. 7500
   D. 15000

8. Fresh water carrying pipelines in chemical industries are coloured with _______________ color?

   A. Sea green
   B. Brown
   C. Yellow
   D. Red

9. Generally, elliptical dished heads____________________?

   A. Are manufactured on 2:1 ratio of major to minor axis and is recommended to be used for
   pressure vessels operating above a pressure of 1.5 MN/m2
   B. Resist half the pressure rating compared to hemi spherical head provided on the cylindrical
   shell of the same thickness and diameter
   C. Are approximately as strong as seamless cylindrical shell having the corresponding I.D and
   O.D
   D. All A., B. and C.

10. Bubble cap plate column is___________________?

    A. A finite stage contactor
    B. Used only for distillation, not for absorption
    C. A differential stage contactor
    D. A continuous contactor