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Process Equipment and Plant Design

Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

1
< 0.5
0.85
1.2

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
None of these
Maximum permissible vapour velocity
Flooding limit of the column

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Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

10 to 20
4 to 10
1 to 2
20 to 30

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

10
300
75
25

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

Copper
Aluminium
Carbon steel
Stainless steel

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Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Cascade
Cross
Reverse
Split

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