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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Carbon steel
Copper
Aluminium
Stainless steel

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Process Equipment and Plant Design
Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.

2.5 to 5
10 to 15
5 to 10
1.5 to 2

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Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

95
60
80
45

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Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

1.3 to 2
1.5 to 3
2.5
1.6 to 2

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

None of these
Minimum and infinity
Zero and infinity
Zero and one

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Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

Remains same
Increases
None of these
Decreases

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