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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Carbon steel
Stainless steel
Copper
Aluminium

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Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

Both A & B
Higher structural strength
Lowest surface area requirement for a given volume
None of these

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Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

Density of the fluid
Total cost considerations (pumping cost plus fixed cost of the pipe)
Viscosity of the fluid
None of these

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Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

12.5
45.5
30.5
5.5

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Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₁/S₂
S₂/S₁
S₁.S₂
1/S₁.S₂

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Process Equipment and Plant Design
__________ closure is the weakest enclosure for cylindrical vessels.

Torispherical
Elliptical
Conical or flat plate
Hemispherical

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