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Process Equipment and Plant Design

Process Equipment and Plant Design
The units of Young's modulus of elasticity and __________ are the same.

Stress
Strain
Modular ratio
None of these

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

All of these
Vapour molecular weight
Pressure and temperature
Molal flow rate of vapour

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

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Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Increases
Decreases
Remains same
May increase or decrease depending upon the solubility of the gas in the liquid

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Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

Less than
2.5 times
One-fourth of
1.25-1.50 times

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Process Equipment and Plant Design
Skirt support is the most suitable for supporting __________ vessels.

Thick walled
Large horizontal
Small horizontal
Tall vertical

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