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Process Equipment and Plant Design

Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

12.5
45.5
5.5
30.5

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Diameter of the column
Vapour density
Entrainment considerations
None of these

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Process Equipment and Plant Design
LMTD correction factor is used in heat exchanger design for

Multipass shell and tube heat exchanger
Double pipe heat exchanger
Fouling fluids
Counter flow of hot and cold fluids

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

0.6-0.8 times
Equal to
2 ft irrespective of (for column > 3 ft diameter)
Twice

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Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

10 to 20
1 to 2
4 to 10
20 to 30

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 0.8
0 to 1.5
0 to 0.08
0 to 2.2

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