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Process Equipment and Plant Design

Process Equipment and Plant Design
The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.

6
34
18
24

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Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

5 to 10
1.5 to 2
2.5 to 5
10 to 15

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Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

60°
75°
30°
45°

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Process Equipment and Plant Design
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.

750-1000
200-250
25-50
50-75

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

∞
2
20.8
1

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Process Equipment and Plant Design
The minimum baffle height should be

Equal to the impeller diameter
Twice the impeller diameter
3/4 of the tank height
Twice the tank diameter

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