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Process Equipment and Plant Design

Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

-q/(1-q)
-q/(q-1)
None of these
-q

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Process Equipment and Plant Design
Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, σ = yield strength and E = modulus of elasticity)

Σ
E
Σ/E
E/σ

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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.

CO₂
NH₃
SO₂
None of these

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

4(0.86p² - πd²/4)/πd
4(0.86p² - πd²)/πd
(p² - πd²/4)/πd
(4p² - πd²/4)/πd

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Process Equipment and Plant Design
Lug support is

All of these
Provided usually for vessels of much smaller height than skirt supported vessels
The most suitable for thick vertical vessel
Same as bracket support

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Running cost of steam for reboiler
Vapour & liquid load both
Fixed charges initially
Running cost of cooling water for condenser

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