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Process Equipment and Plant Design

Process Equipment and Plant Design
Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

pD/6t
pD/2t
pD/3t
pD/4t

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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

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

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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.

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

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

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

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

60°
40°
20°
80°

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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)

1/S₁.S₂
S₁/S₂
S₂/S₁
S₁.S₂

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