1/10-1/15th
1/5-1/10th
1/20-1/30th
1/2 to 1/4th
✅ The correct answer is option A.
Process Equipment and Plant Design MCQs
182. Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.
The corrosive and fouling fluid should be preferably routed through the tubes.
The viscous fluid should be routed through the shell side.
Lower flow rate fluid should be routed through the shell side.
Higher pressure fluid stream should be routed through the shell side.
✅ The correct answer is option D.
183. The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.
2
1-Feb
4
1-Apr
✅ The correct answer is option C.
184. At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.
higher
lower
same
unpredictable
✅ The correct answer is option B.
185. The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from
2 to 3
3 to 5
4 to 8
6 to 12
✅ The correct answer is option C.
186. In a bag filter, the pressure drop increases directly as the
density of the gas, but is independent of the viscosity of the gas.
density of the gas and inversely as viscosity of the gas.
viscosity of the gas and inversely as density of the gas.
none of these.
✅ The correct answer is option B.
187. Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of
preventing the local overstressing of the shell around the opening.
reduction of discontinuity in shape at the junction.
making the joint leak proof.
none of these.
✅ The correct answer is option A.
188. Vapor velocity in a distillation column for non-foaming mixture is in the range of __________ times the flooding velocity.
0.1 to 0.3
0.6 to 0.7
0.85 to 0.95
1.5 to 2
✅ The correct answer is option B.
189. Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.
half
equal to
twice
eight times
✅ The correct answer is option C.
190. for fully open gate valves would be
much more than that for fully open globe valves.
much less (say 2% than that for fully open globe valves).
around 7.
both (b) and (c).
✅ The correct answer is option D.