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.Management Sciences
Category: Process Equipment and Plant Design
The units of Young’s modulus of elasticity and ________________ are the same?
A. Strain
B. Stress
C. Modular ratio
D. None of these
Pick out the correct statement?
A. It is preferred to use a vertical condenser for condensation of vapor from a distillation column without sub-cooling
B. Draining of residual liquid on tray during shut down of distillation column is facilitated by weep holes
C. Random packing a packed tower offers the advantage of lower pressure drop and higher throughput of fluids as compared to regular/stacked packing
D. Risers are generally not connected to the plate in a distillation coloumn by bolts, rivets or welding
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones; because the smaller diameter tubes ______________?
A. Are easier to clean
B. Are less prone to fouling
C. Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D. None of these
Steam is preferred to be used as a heating medium in heat exchangers, because of its_________________?
A. Low cost
B. High latent heat
C. Non-corrosive condensate
D. High film co-efficient
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
A. Liquid gradient on the tray
B. Lower skirt clearance
C. Lower static submergence
D. Small downcomer liquid seal
For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between ______________________ times the tank diameter?
A. 1 to 1.5
B. 2.5 to 3.5
C. 4 to 5
D. 6 to 8
The wall thickness of thin cylindrical shell with hemispherical ends is ______________ that of the spherical ends?
A. Equal to
B. More than
C. Less than
D. Either B. or C.; depends on maximum permissible internal pressure
The buckling tendency of compression members is always in the direction of the _____________________?
A. Least radius of gyration
B. Axis of the load
C. Perpendicular to the axis of the load
D. None of these
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