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Process Equipment and Plant Design

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

0.1-0.5
15-30
10-50
1-2

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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
6 metres
2.5 metres
10 metres

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

1
∞
20.8
2

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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.

20
5
35
55

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Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Bubble cap
Valve
Counterflow
Sieve

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Process Equipment and Plant Design
The safe height (h) to diameter (d) ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than

2
1
3.5
3

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