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Process Equipment and Plant Design

Process Equipment and Plant Design
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

5"
0.5"
50% of the plate spacing
2.5"

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

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

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 25/NRe
f = 0.04/NRe0.16
f = 16/NRe
f = 0.22 NRe0.05

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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.

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

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

1.5-2.5
3.5-5.5
44119
7.5-10.0

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Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

Not greater than
More than
Both B and C
Not less than one fifth of

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