Related Questions

For a given design of bubble cap, the number of bubble caps to be used per tray is set by the
A Allowable gas velocity through the slots
B Plate spacing
C Diameter of the column
D All of the above
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.
A 1.3 to 2
B 1.6 to 2
C 2.5
D 1.5 to 3
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.
A Binary mixture is represented by the apex
B Binary mixture is represented by any point inside
C Ternery mixture is represented by the sides
D Pure component is represented by the apex
Two-fifths of the caps in a box are red, one-fourth are blue and the rest are green. What is the ratio of the green caps to the blue caps?
A 5 : 8
B 5 : 7
C 7 : 8
D 8 : 7
Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole and $${\sigma _{\text{t}}}$$ = Permissible tensile stress for plate material)
A $${\text{pd}}{\sigma _{\text{t}}}$$
B $${\text{pt}}{\sigma _{\text{t}}}$$
C $$\left( {{\text{p}} - {\text{d}}} \right){\sigma _{\text{t}}}$$
D $$\left( {{\text{p}} - {\text{d}}} \right){\text{t}}{\sigma _{\text{t}}}$$
Bubble cap plate column is
A A finite stage contactor
B Used only for distillation, not for absorption
C A differential stage contactor
D A continuous contactor
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around
A 2.5"
B 0.5"
C 5"
D 50% of the plate spacing
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger
A Permits the use of less tubes in a given shell diameter
B Facilitates comparatively easier external cleaning because of large clearance
C Permits the use of more tubes in a given shell diameter
D Both B and C
In a shell and tube heat exchanger, square pitch compared to triangular pitch
A Gives a higher shell side pressure drop
B Gives a lower shell side pressure drop
C Can pack more surface area into a shell of given diameter
D Both (A) and (B)
E Both (A) and (C)
In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement
A Results in higher shell side pressure drop
B Can accomodate less number of tubes for a given shell diameter
C Facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell side fluid
D Creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer co-efficient

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