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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Aluminium
Copper
Stainless steel
Carbon steel

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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.

2.5 to 4.0
5 to 10
10 to 15
0.5 to 1.5

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Process Equipment and Plant Design
In a heat exchanger, shell side fluid velocity can be changed by changing the tube

Layout
Both A & B
Pitch
Neither A nor B

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Process Equipment and Plant Design
Lap joints are preferred for plates having thickness __________ mm.

43961
> 5
> 3
< 12.5

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Process Equipment and Plant Design
Bracket supports are the most suitable for supporting __________ vessels.

Thin shperical (e.g. Horton sphere)
Thick walled vertical
None of these
Horizontal

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Excessive liquid gradient over the tray
Low gas velocity
Low reflux ratio
High gas velocity

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