The distance between the centre of a rivet hole to the nearest edge of the plate is called

Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Pitch

Back pitch

None of these

Margin

Pitch

Back pitch

None of these

Margin

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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.

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

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

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

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

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

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

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

0.8

0.9

(0.8)0.5

1

0.8

0.9

(0.8)0.5

1

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Process Equipment and Plant Design
Seamless pipe is made

From rolled strips formed into cylinders and seam-welded

By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

Both B and C

By extrusion & casting into static and centrifugal molds

From rolled strips formed into cylinders and seam-welded

By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

Both B and C

By extrusion & casting into static and centrifugal molds

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Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

19

38

28

16

19

38

28

16

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Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Sensible heat differences are small, because the temperature changes from tray to tray is small

Liquid/vapor loading across the column remains constant

Trouton's rule is applicable

All of these

Sensible heat differences are small, because the temperature changes from tray to tray is small

Liquid/vapor loading across the column remains constant

Trouton's rule is applicable

All of these

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Process Equipment and Plant Design

Process Equipment and Plant Design The distance between the centre of a rivet hole to the nearest edge of the plate is called

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 Seamless pipe is made

Process Equipment and Plant Design Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

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
Seamless pipe is made

Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the