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Process Equipment and Plant Design

Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

Approximate
None of these
Outer
Inner

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Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

1.004G0.8
0.0176G1.37
HG = 1.004G0.37
HG = 0.0176G0.37

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

25
15
1
5

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Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

1000 to 2000
20 to 100
500 to 750
1 to 5

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

3 to 12.5
4 to 8
L to 3
12.5 to 18.5

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Process Equipment and Plant Design
Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is

Same
Less
Cither A or B; depends upon the I.D. of the pipe
More

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