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").

Half

Three fourth

Equal to

1.5 times

Half

Three fourth

Equal to

1.5 times

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Minimum and infinity

Zero and infinity

None of these

Zero and one

Minimum and infinity

Zero and infinity

None of these

Zero and one

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

10 mm

6 mm

5 mm

8 mm

10 mm

6 mm

5 mm

8 mm

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Process Equipment and Plant Design
When one of the fluids is highly corrosive and has fouling tendency, it should

Perferably flow outside the tube

Flow at a very slow velocity

Flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current

Preferably flow inside the tube for its easier internal cleaning

Perferably flow outside the tube

Flow at a very slow velocity

Flow outside the tube, when the flow is counter-current and inside the tube when the flow is co-current

Preferably flow inside the tube for its easier internal cleaning

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Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

3000

10000

5000

1000

3000

10000

5000

1000

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Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Twenty

Five

Ten

Two

Twenty

Five

Ten

Two

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Process Equipment and Plant Design

Process Equipment and Plant Design Reflux ratio variation in a distillation column is between

Process Equipment and Plant Design When one of the fluids is highly corrosive and has fouling tendency, it should

Process Equipment and Plant Design In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

Process Equipment and Plant Design In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.

Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Process Equipment and Plant Design
When one of the fluids is highly corrosive and has fouling tendency, it should

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

Process Equipment and Plant Design
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by __________ times the hole diameter.