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Process Equipment and Plant Design

Process Equipment and Plant Design
In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

8
80
1
180

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

60°
80°
20°
40°

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

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

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Process Equipment and Plant Design
Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

Ponchon-Savarit method
None of these
McCabe-Thiele's method
Sorel-Lewis method

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Equal to
1.5 times
Three fourth
Half

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/8 and 1/64
1/2 and 5
1/2 and 8
1/64 and 1/8

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