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Process Equipment and Plant Design

Process Equipment and Plant Design
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

0.5"
5"
50% of the plate spacing
2.5"

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Process Equipment and Plant Design
An underdesigned steam trap will

Destroy itself of acceleration wear due to rapid recycling
Waste steam
Back up condensate and cause water hammer in steam line
None of these

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

L to 3
12.5 to 18.5
4 to 8
3 to 12.5

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Decrease by 22
None of these
Increase by 21.6
Increase by 1.8

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Higher
Lower
Same
Unpredictable

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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
Three fourth
Equal to
1.5 times

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