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Process Equipment and Plant Design

Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

43961
15-20
35-40
30-35

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Process Equipment and Plant Design
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. .

6.8
0.5
1.2
3.8

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Either B or C; depends on maximum permissible internal pressure
More than
Equal to
Less than

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = G
Δp = G2
Δp = G0.5
Δp = 1/G0.6

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Process Equipment and Plant Design
Baffle width is normally taken as __________ times the tank diameter.

0.2-0.45
0.45-0.6
0.1-0.12
0.4-0.5

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Process Equipment and Plant Design
Floating head heat exchangers are used for the

Co-current heat transfer systems
Counter-current heat transfer systems
Cases where temperature difference between the shell and the tubes is more (>50°C)
Heat transfer between corrosive fluids

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