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.

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.

16

19

38

28

16

19

38

28

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Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

2.5

0.5

1.5

3.5

2.5

0.5

1.5

3.5

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Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

Half the tray spacing

5"

0.5" -1.25"

2"-3.5"

Half the tray spacing

5"

0.5" -1.25"

2"-3.5"

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Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Fluid rates and fluid properties

Operating pressure and column diameter

All of these

Type & size of packing

Fluid rates and fluid properties

Operating pressure and column diameter

All of these

Type & size of packing

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

It is used for high viscosity liquor having large rate of scaling

Downtake is formed by the annular space between the bundle and the shell

There is no central downtake

The tube bundle is suspended on bracket

It is used for high viscosity liquor having large rate of scaling

Downtake is formed by the annular space between the bundle and the shell

There is no central downtake

The tube bundle is suspended on bracket

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

10 to 15

5 to 10

2.5 to 4.0

0.5 to 1.5

10 to 15

5 to 10

2.5 to 4.0

0.5 to 1.5

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Process Equipment and Plant Design

Process Equipment and Plant Design In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

Process Equipment and Plant Design The maximum liquid gradient over a tray must not exceed

Process Equipment and Plant Design Stage efficiency for packed tower varies with the

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a basket type evaporator.

Process Equipment and Plant Design In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.