Process Equipment and Plant Design MCQs

Question 1

Pick out the wrong statement about the design of seive plate column and the bubble cap column.

Accepted Answer

Weir height for a bubble cap plate column is the same as that for a seive plate column

Answer

The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns

Answer

Weir length for a bubble cap plate is the same as that for the seive plate

Answer

Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate

Question 2

Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always

Accepted Answer

Less than arithmetic mean value

Answer

More than arithmetic mean value

Answer

More than geometric mean value

Answer

Both B & C

Question 3

Vertical vessels are not supported by

Accepted Answer

Saddles

Answer

Brackets

Answer

Skirts

Answer

Columns

Question 4

Skirt support is the most suitable for supporting __________ vessels.

Accepted Answer

Tall vertical

Answer

Small horizontal

Answer

Large horizontal

Answer

Thick walled

Question 5

For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Accepted Answer

Thrice

Answer

Half

Answer

Twice

Answer

Five times

Question 6

Reflux ratio variation in a distillation column is between

Accepted Answer

Minimum and infinity

Answer

Zero and infinity

Answer

Zero and one

Answer

None of these

Question 7

Stage efficiency for packed tower varies with the

Accepted Answer

All of the above

Answer

Type & size of packing

Answer

Fluid rates and fluid properties

Answer

Operating pressure and column diameter

Question 8

__________ of water makes it a widely used coolant in heat exchangers.

Accepted Answer

High specific heat

Answer

Low corrosiveness

Answer

Low dirt factor

Answer

Low viscosity

Question 9

The ratio of shear stress to shear strain is called

Accepted Answer

Shear modulus

Answer

Bulk modulus

Answer

Modulus of rigidity

Answer

Modulus of elasticity