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Process Equipment and Plant Design

Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

Diamond
Chain
None of these
Zig-zag

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Equal to
One fourth
Three fourth
Half

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

1
0.9
0.8
(0.8)0.5

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Process Equipment and Plant Design
In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.

17.5
2.5
12.5
5

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Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Fix the tubes in position
Hold baffle in space
Account for thermal strain
None of these

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Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.75
0.25
1.25
0.5

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