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

1.5 times

Equal to

Half

Three fourth

1.5 times

Equal to

Half

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Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

1/30th

1/20th

1/50th

1/10th

1/30th

1/20th

1/50th

1/10th

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Process Equipment and Plant Design
The thermal stress in a metallic bar does not depend upon the

Neither A nor B

Both A & B

Changes in temperature

Cross-sectional area

Neither A nor B

Both A & B

Changes in temperature

Cross-sectional area

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Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

Economic limit reached, when the plant cost exceeds the saving of steam

Both A & B

Neither A nor B

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

Economic limit reached, when the plant cost exceeds the saving of steam

Both A & B

Neither A nor B

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Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

15-30

1-2

10-50

0.1-0.5

15-30

1-2

10-50

0.1-0.5

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Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

SO₂

NH₃

None of these

CO₂

SO₂

NH₃

None of these

CO₂

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Process Equipment and Plant Design

Process Equipment and Plant Design Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design The thermal stress in a metallic bar does not depend upon the

Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design The normal range of velocity of water in pipes is __________ m/sec.

Process Equipment and Plant Design Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design
The thermal stress in a metallic bar does not depend upon the

Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.