Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

8" dia cap with 1" dia riser
4" dia cap with 8" dia riser
1" dia cap with 0.5" dia riser
6" dia cap with 4" dia riser

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Generally, elliptical dished heads

All of these
Resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter
Are approximately as strong as seamless cylindrical shell having the corresponding I.D and O.D
Are manufactured on 2:1 ratio of major to minor axis and is recommended to be used for pressure vessels operating above a pressure of 1.5 MN/m²

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Tube dia is 3-6 cms, while tube length in 3-6 metres
None of these
Liquor level is maintained at l/3rd to 1/2 of the height of the tube
Steam is fed to the shell, whereas the liquor is filled inside the tube

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger

Permits the use of less tubes in a given shell diameter
Both B and C
Facilitates comparatively easier external cleaning because of large clearance
Permits the use of more tubes in a given shell diameter

ANSWER DOWNLOAD EXAMIANS APP