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Process Equipment and Plant Design

Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/3t
PD/2t
PD/4t
PD/6t

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Avoiding vortex formation
Relieving excess pressure
Enhancing mixing rate
Creating turbulence

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Process Equipment and Plant Design
Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Has greater structural strength
Both A & B
Is easy to fabricate
Neither A nor B

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Process Equipment and Plant Design
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Lower static submergence
Small downcomer liquid seal
Liquid gradient on the tray
Lower skirt clearance

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Process Equipment and Plant Design
Which of the following material is seldom used for pressure vessel construction?

Mild steel
Killed steel
Semi-killed steel
Rimmed still

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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

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

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