Process Equipment And Plant Design MCQ Questions & Answers

1

Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

A) $$\frac{{{\text{pD}}}}{{2{\text{t}}}}$$ B) $$\frac{{{\text{pD}}}}{{4{\text{t}}}}$$ C) $$\frac{{{\text{pD}}}}{{3{\text{t}}}}$$ D) $$\frac{{{\text{pD}}}}{{6{\text{t}}}}$$

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Answer & Solution

Answer: Option A

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2

In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

A) $$\frac{{4\left( {0.86{{\text{p}}^2} - \pi {{\text{d}}^2}/4} \right)}}{{\pi {\text{d}}}}$$ B) $$\frac{{{{\text{p}}^2} - \pi {{\text{d}}^2}/4}}{{\pi {\text{d}}}}$$ C) $$\frac{{4\left( {0.86{{\text{p}}^2} - \pi {{\text{d}}^2}} \right)}}{{\pi {\text{d}}}}$$ D) $$\frac{{4{{\text{p}}^2} + \pi {{\text{d}}^2}/4}}{{\pi {\text{d}}}}$$

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Answer & Solution

Answer: Option A

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3

Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid

A) Containing suspended solids flows at low velocity B) Containing suspended solids flows at high velocity C) Is highly viscous D) Is of high specific gravity

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Answer: Option A

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4

For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

A) $$\frac{{{{\text{d}}_1}}}{{{{\text{d}}_1} + {{\text{d}}_2}}}$$ B) $$\frac{{{{\text{d}}_2}}}{{{{\text{d}}_1} + {{\text{d}}_2}}}$$ C) $$\frac{{{{\text{d}}_1} + {{\text{d}}_2}}}{{{{\text{d}}_1}}}$$ D) $$\frac{{{{\text{d}}_1} + {{\text{d}}_2}}}{{{{\text{d}}_2}}}$$

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Answer & Solution

Answer: Option A

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5

Which of the following is used to set the diameter of the distillation column?

A) Number of theorectical plates B) Static submergence C) Allowable vapour velocity D) Length of straight rectangular weir on cross-flow tray

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Answer & Solution

Answer: Option C

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6

Stage efficiency for packed tower varies with the

A) Type & size of packing B) Fluid rates and fluid properties C) Operating pressure and column diameter D) All of the above

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Answer & Solution

Answer: Option D

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7

It is not desirable to design a heat exchanger for LMTD correction factor, F_T, of less than

A) 0.99 B) 0.95 C) 0.80 D) 0.55

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Answer & Solution

Answer: Option C

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8

Column support for the roof of cylindrical storage tank must be provided for

A) Small diameter tanks B) Large diameter tanks C) Small diameter tall tanks D) All of the above

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Answer & Solution

Answer: Option B

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9

Generally, elliptical dished heads

A) Are manufactured on 2 : 1 ratio of major to minor axis and is recommended to be used for pressure vessels operating above a pressure of 1.5 MN/m² B) Resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter C) Are approximately as strong as seamless cylindrical shell having the corresponding I.D. and O.D. D) All of the above

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Answer & Solution

Answer: Option D

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10

In a shell and tube heat exchanger, the clearance of the tube is generally

A) Not less than one-fourth of the tube diameter or $${\frac{3}{{16}}^{''}}$$ B) More than the tube diameter C) Equal to the tube diameter D) More in case of triangular pitch as compared to the square pitch tube layout

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Answer & Solution

Answer: Option A

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