Process Equipment And Plant Design MCQ Questions & Answers | Chemical Engineering

A. Flat plate

B. Hemispherical

C. Torispherical

D. Ellipsoidal

A. 1

B. < 1

C. >1

D. Equal to the order of reaction

A. Increases

B. Decreases

C. Remain unaffected

D. None of these

A. Plate tower is perferred, if interstage cooling is required to remove heats of reaction or solution

B. Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids

C. The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty

D. In operations involving large temperature changes. (e.g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes

A. Rivetting provides a permanent fastening method

B. The joint made by overlapping of one plate over the other, and then rivetting the two plates together with two rows of rivets is called 'double rivetted butt joint'

C. Shank diameter of the rivets should be less than the size of the hole drilled in the plate for rivetting

D. The efficiency of a rivetted joint is the ratio of the strength of the rivetted joint to the strength of the solid plate

A. Height is 75% of the I.D. of the shell

B. Height is 25% of the I.D. of the shell

C. Spacing is 75% of its height

D. Width is 25% of its height

A. Brackets

B. Skirts

C. Columns

D. Saddles

A. Facilitate draining out liquid from a tray when the unit is not in operation

B. Are normally located near the overflow weir so that any delivery of liquid during operation follows approximately the same path as the overflow fluid

C. Must be large enough (usually $${\frac{1}{4}^{''}}$$ to $${\frac{5}{8}^{''}}$$ dia) to prevent plugging but should not deliver excessive amount of fluid during operation

D. All of the above

A. Sensible heat differences are small, because the temperature changes from tray to tray is small

B. Trouton's rule is applicable

C. Liquid/vapor loading across the column remains constant

D. All of the above

A. Bending

B. Deformation

C. Shear

D. Elongation