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Process Equipment and Plant Design

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

3.5
2.5
0.5
1.5

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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.

43834
2
4
43832

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Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.

Low corrosiveness
Low viscosity
Low dirt factor
High specific heat

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.75-0.85
0.5-0.65
0.60-0.90
0.15-030

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Point efficiency
Murphree plate efficiency
Overall plate efficiency
None of these

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

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

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