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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

0.5
0.8
0.25
0.1

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Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/2t
PD/4t
PD/6t
PD/3t

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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

44119
1.5-2.5
7.5-10.0
3.5-5.5

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Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

43832
43834
4
2

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

1500
1000
300
600

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Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

Is directly proportional to the radius of the dust particle path
None of these
Decreases with increase in gas flow rate
Is inversely proportional to the mass of the dust particle

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