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Process Equipment and Plant Design

Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

35
55
5
20

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering run) would be around

60
5
200
350

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Decrease by 22
Increase by 1.8
Increase by 21.6
None of these

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

O.D. of the tube for square pitch
None of these
Shortest centre to centre distance between adjacent tubes
Shortest distance between two adj acent tube holes

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Process Equipment and Plant Design
Lap joints are preferred for plates having thickness __________ mm.

> 5
< 12.5
> 3
43961

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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.

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

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