Process Equipment and Plant Design Mcqs
Our collections of Multiple choice questions and answers focuses on study of Process Equipment and Plant Design in Chemical Engineering. These questions are chosen from a collection of most authoritative and best reference books on Chemical Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Process Equipment and Plant Design comprehensively.
2. In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
Liquid gradient on the tray
Lower skirt clearance
Lower static submergence
Small downcomer liquid seal
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
3. Pick out the wrong statement pertaining to shell and tube heat exchanger_______________?
Clearance between shell & baffles and between tube & baffles should be minimum to avoid
Passing of the fluid, but it should be enough to permit the removal of tube bundle
Baffles are supported independently of the tubes by tie rods and positioned by spacers
Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
4. In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ _____________ cms?
1.2
0.5
3.8
6.8
5. Practical dividing line between a ductile and brittle materials is suggested, when the ultimate elongation is about 5%. Generally, larger the knuckle radius, stronger is the corner torus section of a head. The knuckle radius provided should be less than ______________ of the head?
6% of I.D.
3 times the thickness
Either A. or B., whichever is larger
Either A. or B., whichever is smaller
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
6. The LMTD correction factor (FT) is defined as the __________________?
Ratio of true temperature difference to the LMTD
Ratio of LMTD to the true temperature difference
Differenced of true temperature difference and the LMTD
Geometric mean of the true temperature difference and the LMTD
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
7. Which of the following is the best tube material from thermal conductivity point of view alone ?
Aluminium
Stainless steel
Copper
Carbon steel
8. Power required for agitation depends upon the______________________?
Height & properties of the liquid
Agitator type & speed of agitation
Size of agitator & the tank
All A., B. and C.
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
9. Stage efficiency for packed tower varies with the____________________?
Type & size of packing
Fluid rates and fluid properties
Operating pressure and column diameter
All A., B. and C.
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
10. Tube wall thickness depends on the corrosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than _____________ mm outside diameter is generally not recommended for fouling fluids ?
16
19
28
38
11. In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around __________________?
0.5
1.5
2.5
3.5
12. In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
Called tube pitch
Called tube clearance
Always less than the diameter of the tube
None of these
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
13. If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
D/2 or minimum 2″ to 5D
D/5 or minimum 2″ to 5D
D/5 or minimum 2″ to D
None of these
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
14. For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft3/sec, ρ = fluid density, lb/ft3 μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches) ?
Di, opt = 3.9 Q0.45 ρ0.13
Di, opt = 3.9 Q0.45. μ0.95
Di, opt = 4.7 Q0.36. μ3.2ρ0.13
Di, opt = 3 Q0.36. μ0.88
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
15. Scale up problem in design based on the similarity concept takes into account _______________ similarity?
Geometrical
Kinematic
Dynamic
All A., B. and C.
Answer & Solution
No Solution for this Answer..! Report or Discus this Question