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Process Equipment and Plant Design

Process Equipment and Plant Design
Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.

85
20
30
45

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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

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

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Process Equipment and Plant Design
A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is

Deformation
Elongation
Bending
Shear

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Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

Is inversely proportional to the mass of the dust particle
None of these
Is directly proportional to the radius of the dust particle path
Decreases with increase in gas flow rate

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dt)/ph
(ph - dh)/dh
(ph - dh)/ph
(ph - dh . dt/2)/ph

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Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Withstand higher pressure for a given metallic shell thickness
Be fabricated very easily
Be designed without wind load considerations
Be supported very easily

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