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Process Equipment and Plant Design

Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as

0.75
0.95
0.85
0.55

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Process Equipment and Plant Design
Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about __________ mm.

10
50
150
100

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

0.25
0.8
0.1
0.5

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.08 to 0.12 d
0.5 to 0.6 d
0.2 to 0.5 d
0.02 to 0.05 d

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing
Plug flow
Laminar flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

D = 1.1 t
D = 1.6 √t
D = 1.5 t
D = 3√t

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