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Process Equipment and Plant Design

Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

SO₂
CO₂
NH₃
None of these

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Process Equipment and Plant Design
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Hemispherical
Conical
Flat plate
Ellipsoidal (2 : 1)

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Process Equipment and Plant Design
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.

Ultimate
Yield point
Breaking
None of these

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Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

HG = 0.0176G0.37
1.004G0.8
HG = 1.004G0.37
0.0176G1.37

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

Non-corrosive condensate
High film co-efficient
Low cost
High latent heat

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Process Equipment and Plant Design
Flanges are connected to pipes by

Screwing
All of these
Welding
Brazing

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