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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

3.5
1.5
0.5
2.5

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Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

250
750
450
650

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Process Equipment and Plant Design
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Half
Twice
Equal to
Eight times

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Process Equipment and Plant Design
Bubble cap plate column is

A continuous contactor
A differential stage contactor
A finite stage contactor
Used only for distillation, not for absorption

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Process Equipment and Plant Design
Which of the following lengths of heat exchanger tubes are normally not used in practice?

0.5 metre
2.5 metres
6 metres
10 metres

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Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

38
76
19
95

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