Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Process Equipment and Plant Design
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Working stress to ultimate stress

Ultimate stress to working stress

None of these

Ultimate stress to breaking stress

Working stress to ultimate stress

Ultimate stress to working stress

None of these

Ultimate stress to breaking stress

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Process Equipment and Plant Design
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?

Flat plate extending across the wall

Disk type baffle

Helical type baffle

Segmental baffle

Flat plate extending across the wall

Disk type baffle

Helical type baffle

Segmental baffle

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Remains same

Increases

May increase or decrease depending upon the plate spacing

Decreases

Remains same

Increases

May increase or decrease depending upon the plate spacing

Decreases

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Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Decreases

Remain unaffected

Increases

None of these

Decreases

Remain unaffected

Increases

None of these

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids

Plate tower is perferred, if interstage cooling is required to remove heats of reaction or solution

In operations involving large temperature changes. (e.g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes

The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty

Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids

Plate tower is perferred, if interstage cooling is required to remove heats of reaction or solution

In operations involving large temperature changes. (e.g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes

The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty

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Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

>1

Equal to the order of reaction

1

< 1

>1

Equal to the order of reaction

1

< 1

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Process Equipment and Plant Design

Process Equipment and Plant Design Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Process Equipment and Plant Design Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?

Process Equipment and Plant Design Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Process Equipment and Plant Design Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

Process Equipment and Plant Design The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always

Process Equipment and Plant Design
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Process Equipment and Plant Design
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?

Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

Process Equipment and Plant Design
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always