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Process Equipment and Plant Design

Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

2.5
0.5
1.5
3.5

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Process Equipment and Plant Design
Skirt support is the most suitable for supporting __________ vessels.

Large horizontal
Tall vertical
Thick walled
Small horizontal

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 25/NRe
f = 16/NRe
f = 0.04/NRe0.16
f = 0.22 NRe0.05

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

1-5
80-100
0.1-0.5
10-20

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Process Equipment and Plant Design
An underdesigned steam trap will

Waste steam
Destroy itself of acceleration wear due to rapid recycling
None of these
Back up condensate and cause water hammer in steam line

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

30
> 20
> 10
< 10

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