less than that for Tee (used as elbow, entering run).
more than that for Tee (used as elbow, entering run).
around 90.
both (b) and (c).
✅ The correct answer is option D.
Process Equipment and Plant Design MCQs
42. Lap joints are preferred for plates having thickness __________ mm.
< 12.5
> 3
> 5
5-Oct
✅ The correct answer is option B.
43. Back-trapping in a distillation column results due to
low gas velocity.
high gas velocity.
excessive liquid gradient over the tray.
low reflux ratio.
✅ The correct answer is option C.
44. Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to
G0.2
G0.5
G0.8
G1.5
✅ The correct answer is option C.
45. In a thin cylindrical shell, the hoop stress is __________ stress.
radial
circumferential tensile
compressive
longitudinal
✅ The correct answer is option B.
46. Thin spherical shells subjected to internal pressure, develop __________ stresses.
radial
circumferential
both (a) & (b)
neither (a) nor (b)
✅ The correct answer is option A.
47. Rate of filtrate delivery is inversely proportional to the
filtering area & the pressure difference driving force.
viscosity of filtrate.
cake & filter medium resistance.
both (a) and (b)
✅ The correct answer is option D.
48. Which of the following factors determine the amount of entrainment in a distillation column ?
Plate spacing.
Depth of liquid above the bubble cap slots.
Vapour velocity in the volume between the plates.
All (a), (b) and (c).
✅ The correct answer is option D.
49. In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.
less than
1.25-1.50 times
2.5 times
one-fourth of
✅ The correct answer is option B.