PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

Which of the following is the best tube material from thermal conductivity point of view alone?

Aluminium

Carbon steel

Copper

Stainless steel

TRUE ANSWER : ?
YOUR ANSWER : ?

In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon

Baffle spacing

None of these

Clearance

Pitch

TRUE ANSWER : ?
YOUR ANSWER : ?

Generally, elliptical dished heads

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

Are approximately as strong as seamless cylindrical shell having the corresponding I.D and O.D

All of these

Resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter

TRUE ANSWER : ?
YOUR ANSWER : ?

The retention time of material in a rotary dryer depends upon its

All of these

Rpm

Flights arrangement

Slope & length

TRUE ANSWER : ?
YOUR ANSWER : ?

Skirt support is the most suitable for supporting __________ vessels.

Thick walled

Tall vertical

Small horizontal

Large horizontal

TRUE ANSWER : ?
YOUR ANSWER : ?

The buckling tendency of compression members is always in the direction of the

None of these

Perpendicular to the axis of the load

Least radius of gyration

Axis of the load

TRUE ANSWER : ?
YOUR ANSWER : ?

In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

More than that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Less than that for fluid flow

Same as that for fluid flow

TRUE ANSWER : ?
YOUR ANSWER : ?

for couplings and unions would be

200

60

350

Negligible

TRUE ANSWER : ?
YOUR ANSWER : ?

Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

At the outer surface

None of these

At the mid thickness of the cylindrical wall

At the inner surface

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

None of these

The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4

The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation

Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps

TRUE ANSWER : ?
YOUR ANSWER : ?