Q. Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or __________ times the column diameter, whichever is lower.

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Q. Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

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Q. In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

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Q. Seamless pipe is made

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Q. Pick out the wrong statement pertaining to the design of the distillation column.

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Q. The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

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Q. In distillation columns, bubble caps are held in place over trays by

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Q. The buckling tendency of compression members is always in the direction of the

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Q. In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms.

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Q. Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?

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Q. A certain pressure vessel manufacturer avoids doing reinforcements calculations for openings by always providing a reinforcing pad extending upto double the diameter of the opening and of the same material and thickness as that of the shell wall. If area compensation is accepted as a code guideline, his approach leads to safe design

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Q. In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.

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Q. Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

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Q. Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

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Q. Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

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Q. In condenser, the cooling water is passed in the tube side in a pass arrangement, because

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Q. In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

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Q. Height of the flights in the rotary drier is in the range of

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Q. Vapor velocity in a distillation column for non-foaming mixture is in the range of __________ times the flooding velocity.

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Q. Baffles may be eliminated for

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