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Process Equipment and Plant Design

Process Equipment and Plant Design
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as

0.5
0.1
0.8
0.25

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

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

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Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

1.3 to 2
2.5
1.5 to 3
1.6 to 2

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Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.

43895
44058
43962
44183

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Process Equipment and Plant Design
__________ dished head is the strongest of all.

None of these
Hemispherical
Torispherical
Elliptical

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

High latent heat
Non-corrosive condensate
Low cost
High film co-efficient

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