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Process Equipment and Plant Design

Process Equipment and Plant Design
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

2
20.2
20.8
None of these

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Process Equipment and Plant Design
25 per cent cut segmental baffle means that the baffle

Height is 75% of the I.D. of the shell
Height is 25% of the I.D. of the shell
Width is 25% of its height
Spacing is 75% of its height

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/64 and 1/8
1/2 and 5
1/2 and 8
1/8 and 1/64

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Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

Long tube vertical evaporator
None of these
Short tube vertical evaporator
Horizontal tube evaporator

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.1 to 0.25
0.65 to 0.80
0.5 to 0.6
0.3 to 0.5

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Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

None of these
Decreases
Remain unaffected
Increases

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