Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Three fourth

Equal to

Half

1.5 times

Three fourth

Equal to

Half

1.5 times

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

4 to 8

3 to 12.5

12.5 to 18.5

L to 3

4 to 8

3 to 12.5

12.5 to 18.5

L to 3

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

More than the tube diameter

Not less than one-fourth of the tube diameter or 3/16"

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

More than the tube diameter

Not less than one-fourth of the tube diameter or 3/16"

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Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

30.5

5.5

45.5

12.5

30.5

5.5

45.5

12.5

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Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

75°

60°

30°

45°

75°

60°

30°

45°

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Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

35

20

5

55

35

20

5

55

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Process Equipment and Plant Design

Process Equipment and Plant Design Hole diameter of the seive trays in the distillation column ranges from __________ mm.

Process Equipment and Plant Design In a shell and tube heat exchanger, the clearance of the tube is generally

Process Equipment and Plant Design Maximum acceptable total liquid gradient over a tray is about __________ mm.

Process Equipment and Plant Design Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

Process Equipment and Plant Design Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.