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Process Equipment and Plant Design

Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

52-68
88-105
43929
17-34

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Process Equipment and Plant Design
Safety valves are provided in chemical equipments to guard against excessive

Pressure/pressure fluctuation
Turbulence
Noise
Temperature

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Decreases
Remains same
May increase or decrease depending upon the plate spacing
Increases

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Process Equipment and Plant Design
Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

Same
More or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein
Less
More

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Half
Equal to
One fourth
Three fourth

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Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

0.5 d
2 d
D
0.75 d

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