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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

20.2
20.8
2
None of these

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

25 cms
I.D. of the shell
5 cms
40% of the I.D. of the shell

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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

1.5-2.5
3.5-5.5
7.5-10.0
44119

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Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

All of these
Dynamic
Kinematic
Geometrical

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Process Equipment and Plant Design
Thickness of the frame of a plate and frame filter as compared to that of plates is

More
Either A or B
Same
Less

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Process Equipment and Plant Design
Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger?

Orifice baffle
75% cut segmental baffle
Disk and doughnut baffle
25% cut segmental baffle

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