Process Equipment and Plant Design MCQs

Question 1

Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than __________ mm.

Accepted Answer

30

Answer

10

Answer

20

Answer

5

Question 2

Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

Accepted Answer

Sorel-Lewis method

Answer

McCabe-Thiele's method

Answer

Ponchon-Savarit method

Answer

None of these

Question 3

In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

Accepted Answer

$$\frac{{4\left( {0.86{{	ext{p}}^2} - \pi {{	ext{d}}^2}/4} ight)}}{{\pi {	ext{d}}}}$$

Answer

$$\frac{{{{	ext{p}}^2} - \pi {{	ext{d}}^2}/4}}{{\pi {	ext{d}}}}$$

Answer

$$\frac{{4\left( {0.86{{	ext{p}}^2} - \pi {{	ext{d}}^2}} ight)}}{{\pi {	ext{d}}}}$$

Answer

$$\frac{{4{{	ext{p}}^2} + \pi {{	ext{d}}^2}/4}}{{\pi {	ext{d}}}}$$

Question 4

In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

Accepted Answer

$${\frac{1}{{15}}^{{	ext{th}}}}$$

Answer

$${\frac{1}{5}^{{	ext{th}}}}$$

Answer

$${\frac{1}{{30}}^{{	ext{th}}}}$$

Answer

$${\frac{1}{{50}}^{{	ext{th}}}}$$

Question 5

__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

Accepted Answer

Conical

Answer

Flat

Answer

Dome

Answer

Umbrella

Question 6

Hazards associated with the relief valve leakage for extremely hazardous material storage can be taken care of by providing

Accepted Answer

Rupture diaphragm

Answer

Dikes

Answer

Surge chamber

Answer

None of these

Question 7

Pick out the wrong statement.

Accepted Answer

Safety valves are provided in heat exchangers for removal of non-conden-sables

Answer

Liquid metals and dowtherm are used for very high temperature heating

Answer

In a shell and tube heat exchanger, high pressure fluid is generally routed through the tube

Answer

A loop seal or U-seal is provided in a vertical condenser sub-cooler to prevent quick draining of the condensate

Question 8

The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally __________ the tube wall thickness.

Accepted Answer

Twice

Answer

Equal to

Answer

Four times

Answer

Half

Question 9

Safety valves are provided in chemical equipments to guard against excessive

Accepted Answer

Pressure/pressure fluctuation

Answer

Temperature

Answer

Turbulence

Answer

Noise