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Process Equipment and Plant Design

Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Vapour density
Entrainment considerations
None of these
Diameter of the column

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Process Equipment and Plant Design
Le/D for fully open gate valves would be

Around 7
Much less (say 2% than that for fully open globe valves)
Both B and C
Much more than that for fully open globe valves

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

0.9
(0.8)0.5
0.8
1

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Process Equipment and Plant Design
The type of stress developed in a metallic bar on subjecting it to a change in temperature without allowing it to be deformed is __________ stress.

Shear
Compressive
Tensile
Thermal

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.5 to 0.6 d
0.08 to 0.12 d
0.2 to 0.5 d
0.02 to 0.05 d

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Process Equipment and Plant Design
Which of the following material is seldom used for pressure vessel construction?

Semi-killed steel
Rimmed still
Mild steel
Killed steel

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