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Process Equipment and Plant Design

Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

10
20
10
20

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Process Equipment and Plant Design
Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.

Same as
More than
Less than
Either more or less (depending upon relative volatility)

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

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Process Equipment and Plant Design
Column support for the roof of cylindrical storage tank must be provided for

Small diameter tall tanks
Small diameter tanks
Large diameter tanks
All of these

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Process Equipment and Plant Design
The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.

15 to 30
55 to 75
5 to 10
40 to 50

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

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