Process Equipment And Plant Design MCQ Questions & Answers

1

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

A) $$\frac{1}{8}$$ and $$\frac{1}{{64}}$$ B) $$\frac{1}{{64}}$$ and $$\frac{1}{8}$$ C) $$\frac{1}{2}$$ and 8 D) $$\frac{1}{2}$$ and 5

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Answer & Solution

Answer: Option A

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2

In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

A) Less than B) 1.25-1.50 times C) 2.5 times D) One-fourth of

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Answer & Solution

Answer: Option B

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3

Value of Peclet number = 0, is the representative of

A) Laminar flow B) Complete back mixing C) Plug flow D) Eddy diffusivity = 0

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Answer & Solution

Answer: Option B

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4

The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is __________ cms.

A) 5 B) 15 C) 7.5 D) 50

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Answer & Solution

Answer: Option B

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5

Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

A) It is unsuitable for concentrating those liquids, which form a scale or deposit salt B) It is suitable for process, in which the final product is a liquor instead of solid C) Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres D) Liquor flows inside the tube, while the steam is outside submerging the tube

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Answer & Solution

Answer: Option D

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6

A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

A) 2 B) 2^0.8 C) 2^0.2 D) None of these

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Answer & Solution

Answer: Option B

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7

Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

A) The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation B) Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps C) The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4 D) None of these

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Answer & Solution

Answer: Option D

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8

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

A) Only if the opening is on spherical vessel B) Only if the opening is on a vertical cylinderical vessel C) Only if the opening is on a horizontal cylinderical vessel D) Irrespective of the shape of the vessel

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Answer & Solution

Answer: Option D

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9

__________ heat exchanger is also known as 'hair pin type' exchanger,

A) Double pipe B) Finned C) Plate type D) Regenerative

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Answer & Solution

Answer: Option A

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10

__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

A) Hemispherical B) Dished C) Ellipsoidal D) Conical

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Answer & Solution

Answer: Option C

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Process Equipment And Plant Design MCQ Questions & Answers | Chemical Engineering