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Process Equipment and Plant Design

Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Slope & length
Rpm
All of these
Flights arrangement

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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 = 1.6 √t
D = 1.1 t
D = 3√t
D = 1.5 t

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Process Equipment and Plant Design
The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.

0.4-0.9
0.2-0.5
0.1-0.2
1.2-1.5

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Process Equipment and Plant Design
Vertical storage vessels are never supported by __________ support.

Bracket
Lug
Skirt
Saddle

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Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

3 to 5
2 to 3
4 to 8
6 to 12

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Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

1 to 2
10 to 20
20 to 30
4 to 10

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