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Process Equipment and Plant Design

Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

1.5 nth
(1/n)th
0.5 nth
nth

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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
1.5 times
Equal to
Three fourth

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Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

1.25
3.5
1.75
2.5

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Back trapping
Maldistribution of gas
All of these
Gas blowing beneath cap skit

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Process Equipment and Plant Design
Removable connection of tubes to tube sheet is called

Saddle
Socket
Nipple
Ferrule

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

75
300
10
25

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