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Process Equipment and Plant Design

Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Same
Higher
Unpredictable
Lower

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Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

1.5 to 2
1 to 1.5
0.5 to 1
2 to 2.5

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Process Equipment and Plant Design
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.

3 to 4
1.5 to 2
>5
4 to 5

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Process Equipment and Plant Design
The force due to wind load acting on a tall vessel depends upon its

Height
Outside diameter
All of these
Shape

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Low gas velocity
Resistance offered to flow of liquids by caps & risers and the flow of gas
Large reflux ratio
Large plate spacing

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

One fourth
Half
Equal to
Three fourth

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