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Process Equipment and Plant Design

Process Equipment and Plant Design
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as

0.8
0.1
0.5
0.25

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

Z.H.ρ/L
H.ρ/L
L/Z.H.ρ
Z.H/L.ρ

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Process Equipment and Plant Design
__________ dished head is the strongest of all.

Elliptical
Torispherical
Hemispherical
None of these

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

Reducing scale deposition
Fixing the tubes
Creating turbulence
Increasing pressure drop

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Welded
Screwed
Flanged
Brazed

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Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Compressive
Circumferential tensile
Longitudinal
Radial

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