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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
3.5
0.5
1.5

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Process Equipment and Plant Design
An underdesigned steam trap will

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

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Process Equipment and Plant Design
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Five times
Twice
Half
Thrice

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Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Either A or B; no generalisation can be made
More
Same
Less

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Process Equipment and Plant Design
In case of a continuous distillation column, increase in reflux ratio may result in the

All of these
Greater cost for the reboiler heat supply
Greater cost for the condenser coolant
Lower fixed charges for the column

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Process Equipment and Plant Design
Lug support is

Provided usually for vessels of much smaller height than skirt supported vessels
All of these
Same as bracket support
The most suitable for thick vertical vessel

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