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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for fully open globe value may be around

25
300
75
10

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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
None of these
2
20.8

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Increases
Remains same
Remains same, only if the number of tube passes does not change
Decreases

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Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

< 7
> 7 < 15
< 30
> 20 < 50

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Process Equipment and Plant Design
Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

30 to 40
10 to 20
40 to 50
1 to 5

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Process Equipment and Plant Design
The shell side pressure drop in a shell and tube heat exchanger is maximum for __________ baffle.

Segmental
Disk and ring
Independent of the type of
Orifice

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