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Process Equipment and Plant Design

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.

44183
44058
43962
43895

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 16/NRe
f = 0.04/NRe0.16
f = 0.22 NRe0.05
f = 25/NRe

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Process Equipment and Plant Design
The wall thickness for a large high pressure pipeline is determined by the consideration of the

Forces exerted by static and dynamic action at bends
Circumferential pipewall tension
Axial tensile stress in the pipe
Temperature stresses

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

10 to 15
2.5 to 4.0
0.5 to 1.5
5 to 10

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Process Equipment and Plant Design
Pressure differential maintained across a continuous rotary vacuum filter is in the range of __________ mm Hg column.

50 to 100
100 to 150
600 to 700
250 to 500

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Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

34
6
18
12

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