Permeability MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Permeability, a fundamental topic in the field of Geotechnical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Permeability MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Permeability mcq questions that explore various aspects of Permeability problems. Each MCQ is crafted to challenge your understanding of Permeability principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Geotechnical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Permeability MCQs are your pathway to success in mastering this essential Geotechnical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Permeability. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Permeability knowledge to the test? Let's get started with our carefully curated MCQs!

Permeability MCQs | Page 4 of 10

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Q31.
The drainage property of silty clay is ________

a.

very good

b.

good

c.

fair

d.

very poor

Discuss
Answer: (d).very poor
Q32.
For flow of water in tube, the velocity at surface is ___________

a.

zero

b.

equal to velocity at 1/3 of diameter

c.

equal to velocity at 1/2 of diameter

d.

equal to velocity at centre

Discuss
Answer: (a).zero
Q33.
In Poiseuille’s law of flow, the variation of the velocity is given by _______

a.

v = \(\frac{hγ_w}{4ηL}(r^2-R^2)\)

b.

v = \(\frac{hγ_w}{14ηL}(R^2-r^2)\)

c.

v = \(\frac{hγ_w}{4ηL}(R^2-r^2)\)

d.

v = \(\frac{hγ_w}{8ηL}(R^2-r^2)\)

Discuss
Answer: (c).v = \(\frac{hγ_w}{4ηL}(R^2-r^2)\)
Q34.
The velocity of flow of water at the centre of tube is _______ when the head is 0.1m, η=8.9*10¯³ dynes-s/cm², γw=1 g/cm³, the length is 10m and the diameter is 20cm.

a.

20 cm/s

b.

22 cm/s

c.

28 cm/s

d.

30 cm/s

Discuss
Answer: (c).28 cm/s
Q35.
The quantity of water flowing in thin cylindrical sheet of thickness dr is ____________

a.

\(dq=\frac{hγ_w}{4ηL}(R^2-r^2)2πrdr\)

b.

\(dq=\frac{hγ_w}{4ηL}(R^2-r^2)4πrdr\)

c.

\(dq=\frac{hγ_w}{4ηL}(R^2-r^2)8πrdr\)

d.

\(dq=\frac{hγ_w}{4ηL}(R^2-r^2)12πrdr\)

Discuss
Answer: (a).\(dq=\frac{hγ_w}{4ηL}(R^2-r^2)2πrdr\)
Q36.
The total quantity of water flowing through the capillary tube is given by _________

a.

\(q=\frac{hγ_w}{4ηL} R^2 \)

b.

\(q=\frac{hγ_w}{4ηL} R^4\)

c.

\(q=\frac{hγ_w}{8ηL} R^2\)

d.

\(q=\frac{hγ_w}{8ηL} πR^4\)

Discuss
Answer: (d).\(q=\frac{hγ_w}{8ηL} πR^4\)
Q37.
The total quantity of water with respect to the hydraulic gradient flowing through the capillary tube is given by _________

a.

\( q=\frac{hiγ_w}{4ηL} R^2 \)

b.

\( q=\frac{hγ_w}{4ηL} R^4/i\)

c.

\( q=\frac{iγ_w}{8η} π R^2\)

d.

\( q=\frac{iγ_w}{8η} πR^4\)

Discuss
Answer: (d).\( q=\frac{iγ_w}{8η} πR^4\)
Q38.
The average velocity of the tube of area a is given by _________

a.

\(v_{av}=\frac{iγ_w}{8ηπ}a \)

b.

\(v_{av}=\frac{\frac{iγ_w}{8ηπ}}{a}\)

c.

\(v_{av}=\frac{iγ_w}{2ηπ}a\)

d.

\(v_{av}=\frac{\frac{iγ_w}{4ηπ}}{a}\)

Discuss
Answer: (a).\(v_{av}=\frac{iγ_w}{8ηπ}a \)
Q39.
The hydraulic radius RH is the ratio of the area of the tube to its volume.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q40.
The hydraulic radius RH of circular tube is given by ________

a.

RH=R/4

b.

RH=R/6

c.

RH=R/2

d.

RH=R/12

Discuss
Answer: (c).RH=R/2
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