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Process Equipment and Plant Design

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
The dust collection efficiency of a cyclone separator

Decreases with increase in gas flow rate
Is inversely proportional to the mass of the dust particle
None of these
Is directly proportional to the radius of the dust particle path

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Process Equipment and Plant Design
In condenser, the cooling water is passed in the tube side in a pass arrangement, because

Pressure drop is reduced
It reduces heat transfer area
More thinner tubes can be used
It makes condenser compact

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Process Equipment and Plant Design
In distillation columns, bubble caps are held in place over trays by

A hold down bar
Bolts
Rivets
Both B and C

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Process Equipment and Plant Design
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as

0.5
0.8
0.25
0.1

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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.

Counterflow
Sieve
Bubble cap
Valve

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