Most answered questions in Soil Mechanics / GO Civil

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1

GATE2018 CE-1: 21
A core cutter of $130$ mm height has inner and outer diameters of $100$ mm and $106$ mm, respectively. The area ratio of the core cutter (in $\%$, up to two decimal places) is _____

A core cutter of $130$ mm height has inner and outer diameters of $100$ mm and $106$ mm, respectively. The area ratio of the core cutter (in $\%$, up to two decimal place...

gatecse

4.0k points

gatecse asked Feb 17, 2018

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1 answer

2

phase relationships of soil
a natural soil deposits has bulk density of 1.90g/cm^3 and water content of 6 percent . assume G=2.67 . asuming the voids ratio to remain constant , what will be degree of saturation at water content of 16%?

a natural soil deposits has bulk density of 1.90g/cm^3 and water content of 6 percent . assume G=2.67 . asuming the voids ratio to remain constant , what will be degree o...

sarthika

130 points

sarthika asked May 7, 2022

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3

GATE Civil 2021 Set 2 | Question: 10
The most appropriate triaxial test to assess the long-term stability of an excavated clay slope is consolidated drained test unconsolidated undrained test consolidated undrained test unconfined compression test

The most appropriate triaxial test to assess the long-term stability of an excavated clay slope isconsolidated drained testunconsolidated undrained testconsolidated undra...

go_editor

5.3k points

go_editor asked Mar 1, 2021

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4

GATE2018 CE-2: 43
The compression curve (void ratio $e$ vs. effective stress, $\sigma_v^{\text{'}}$ for a certain clayey soil is a straight line in a semi-logarithmic plot and it passes through the points ($e = 1.2; \: \sigma_v=50 \: kPa$) and ($e = 0.6; \sigma_v = 800 \: kPa$). The compression index (up to two decimal places) of the soil is ______

The compression curve (void ratio $e$ vs. effective stress, $\sigma_v^{\text{'}}$ for a certain clayey soil is a straight line in a semi-logarithmic plot and it passes th...

gatecse

4.0k points

gatecse asked Feb 17, 2018

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5

GATE2018 CE-1: 46
The void ratio of a soil is $0.55$ at an effective normal stress of $140$ kPa. The compression index of the soil is $0.25$. In order to reduce the void ratio to $0.4$, an increase in the magnitude of effective normal stress (in kPa, up to one decimal place) should be ________

The void ratio of a soil is $0.55$ at an effective normal stress of $140$ kPa. The compression index of the soil is $0.25$. In order to reduce the void ratio to $0.4$, an...

gatecse

4.0k points

gatecse asked Feb 17, 2018

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1 answer

6

GATE2018 CE-1: 45
A conventional drained triaxial compression test was conducted on a normally consolidated clay sample under an effective confining pressure of $200$ kPa. The deviator stress at failure was found to be $400$ kPa. An identical specimen of the same clay sample is ... deviator stress at failure is $150$ kPa, the pore pressure developed (in kPa, up to one decimal place) is ________

A conventional drained triaxial compression test was conducted on a normally consolidated clay sample under an effective confining pressure of $200$ kPa. The deviator str...

gatecse

4.0k points

gatecse asked Feb 17, 2018

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7

GATE2018 CE-1: 20
In a shrinkage limit test, the volume and mass of a dry soil pat are found to be $50 cm^3$ and $88$ g, respectively. The specific gravity of the soil solids is $2.71$ and the density of water is $1$ g/cc. The shrinkage limit (in $\%$, up to two decimal places is _____

In a shrinkage limit test, the volume and mass of a dry soil pat are found to be $50 cm^3$ and $88$ g, respectively. The specific gravity of the soil solids is $2.71$ and...

gatecse

4.0k points

gatecse asked Feb 17, 2018

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8

GATE Civil 2021 Set 2 | Question: 11
As per the Unified Soil Classification System $\text{(USCS)}$, the type of soil represented by $\text{MH}$' is Inorganic silts of high plasticity with liquid limit more than $50\%$ Inorganic silts of low plasticity with liquid limit less ... high plasticity with liquid limit less than $50\%$ Inorganic clays of low plasticity with liquid limit more than $50\%$

As per the Unified Soil Classification System $\text{(USCS)}$, the type of soil represented by ‘$\text{MH}$’ isInorganic silts of high plasticity with liquid limit mo...

go_editor

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go_editor asked Mar 1, 2021

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9

GATE Civil 2021 Set 2 | Question: 30
A clay layer of thickness $\text{H}$ has a preconsolidation pressure $p_{c}$ and an initial void ratio $e_{0}$.The initial effective overburden stress at the mid-height of the layer is $p_{0}$. At the same location, the increment in effective stress due to applied external load ...

A clay layer of thickness $\text{H}$ has a preconsolidation pressure $p_{c}$ and an initial void ratio $e_{0}$.The initial effective overburden stress at the mid-height o...

go_editor

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go_editor asked Mar 1, 2021

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10

GATE Civil 2021 Set 2 | Question: 35
From laboratory investigations, the liquid limit, plastic limit, natural moisture content and flow index of a soil specimen are obtained as $60\%, 27\%, 32\%$ and $27$, respectively. The corresponding toughness index and liquidity index of the soil specimen, respectively, are $0.15$ and $1.22$ $0.19$ and $6.60$ $1.22$ and $0.15$ $6.60$ and $0.19$

From laboratory investigations, the liquid limit, plastic limit, natural moisture content and flow index of a soil specimen are obtained as $60\%, 27\%, 32\%$ and $27$, r...

go_editor

5.3k points

go_editor asked Mar 1, 2021

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11

GATE Civil 2021 Set 2 | Question: 47
The void ratio of a clay soil sample $\text{M}$ decreased from $0.575$ to $0.510$ when the applied pressure is increased from $\text{120 kPa}$ to $\text{180 kPa}$. For the same increment in pressure, the void ratio of another clay ... of consolidation of sample $\text{M}$ to sample $\text{N } (\textit{round off to three decimal places}$) is __________________

The void ratio of a clay soil sample $\text{M}$ decreased from $0.575$ to $0.510$ when the applied pressure is increased from $\text{120 kPa}$ to $\text{180 kPa}$. For th...

go_editor

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go_editor asked Mar 1, 2021

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12

GATE Civil 2021 Set 1 | Question: 7
In an Oedometer apparatus, a specimen of fully saturated clay has been consolidated under a vertical pressure of $\text{50 kN/m}^2$ and is presently at equilibrium. The effective stress and pore water pressure immediately on increasing the vertical stress to $\text{150 kN/m}^2$, ... $\text{50 kN/m}^2$ and $\text{100 kN/m}^2$ $0$ and $\text{150 kN/m}^2$

In an Oedometer apparatus, a specimen of fully saturated clay has been consolidated under a vertical pressure of $\text{50 kN/m}^2$ and is presently at equilibrium. The e...

Arjun

13.0k points

Arjun asked Feb 19, 2021

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13

GATE Civil 2021 Set 1 | Question: 8
A partially-saturated soil sample has natural moisture content of $25\%$ and bulk unit weight of $\text{18.5 kN/m}^3$. The specific gravity of soil solids is $2.65$ and unit weight of water is $\text{9.81 kN/m}^3$. The unit weight of the soil sample on full saturation is $\text{21.12 kN/m}^3$ $\text{19.03 kN/m}^3$ $\text{20.12 kN/m}^3$ $\text{18.50 kN/m}^3$

A partially-saturated soil sample has natural moisture content of $25\%$ and bulk unit weight of $\text{18.5 kN/m}^3$. The specific gravity of soil solids is $2.65$ and u...

Arjun

13.0k points

Arjun asked Feb 19, 2021

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14

GATE Civil 2021 Set 1 | Question: 31
Based on drained triaxial shear tests on sands and clays, the representative variations of volumetric strain $\left ( \Delta V/V \right )$ with the shear strain $\left ( \gamma \right )$ is shown in the figure. Choose ... clay Curve $P$ represents loose sand and normally consolidated clay, while Curve $Q$ represents dense sand and overconsolidated clay

Based on drained triaxial shear tests on sands and clays, the representative variations of volumetric strain $\left ( \Delta V/V \right )$ with the shear strain $\left ( ...

Arjun

13.0k points

Arjun asked Feb 19, 2021

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15

GATE2020-CE-1-7
In a two-dimensional stress analysis, the state of stress at a point $P$ is $\begin{bmatrix} \sigma \end{bmatrix} = \begin{bmatrix}\sigma_{xx} &\tau_{xy} \\ \tau_{xy} &\sigma_{yy} \end{bmatrix}$ The necessary and sufficient condition for existence of the state of pure shear at ... $\tau_{xy}=0$ $\sigma_{xx}+\sigma_{yy}=0$ $(\sigma_{xx}-\sigma_{yy})^2+4\tau^2_{xy}=0$

In a two-dimensional stress analysis, the state of stress at a point $P$ is $$\begin{bmatrix} \sigma \end{bmatrix} = \begin{bmatrix}\sigma_{xx} &\tau_{xy} \\ \tau_{xy} &\...

go_editor

5.3k points

go_editor asked Feb 27, 2020

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16

GATE2020-CE-1-22
In a drained triaxial compression test, a sample of sand fails at deviator stress of $150\:kPa$ under confining pressure of $50\:kPa$. The angle of internal friction (in degree, round off to the nearest integer) of the sample, is ______

In a drained triaxial compression test, a sample of sand fails at deviator stress of $150\:kPa$ under confining pressure of $50\:kPa$. The angle of internal friction (in ...

go_editor

5.3k points

go_editor asked Feb 27, 2020

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17

GATE2020-CE-1-28
Distributed load(s) of $50\:kN/m$ may occupy position(s) (either continuously or in patches) on the girder $\textbf{PQRST}$ as shown in the figure (not drawn to the scale) The maximum negative (hogging) bending moment (in $kN.m$) that occurs at point $\textbf{R}$, is $22.50$ $56.25$ $93.75$ $150.00$

Distributed load(s) of $50\:kN/m$ may occupy position(s) (either continuously or in patches) on the girder $\textbf{PQRST}$ as shown in the figure (not drawn to the scale...

go_editor

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go_editor asked Feb 27, 2020

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18

GATE2020-CE-1-34
The total stress paths corresponding to different loading conditions, for a soil specimen under the isotropically consolidated stress state (O), are shown below ... $OP-III, OQ-II, OR-I, OS-IV$ $OP-I, OQ-III, OR-II, OS-IV$

The total stress paths corresponding to different loading conditions, for a soil specimen under the isotropically consolidated stress state (O), are shown below $\begin{...

go_editor

5.3k points

go_editor asked Feb 27, 2020

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19

GATE2020-CE-1-47
Water flows in the upward direction in a tank through $2.5\;m$ thick sand layer as shown in the figure. The void ratio and specific gravity of sand are $0.58$ and $2.7$, respectively. The sand is fully saturated. Unit weight of water is $10\:kN/m^3$. The ... (in $kPa$, round off to two decimal places) at point $\textbf{A}$, located $1\:m$ above the base of tank, is ______.

Water flows in the upward direction in a tank through $2.5\;m$ thick sand layer as shown in the figure. The void ratio and specific gravity of sand are $0.58$ and $2.7$, ...

go_editor

5.3k points

go_editor asked Feb 27, 2020

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20

GATE2020 CE-2-6
The state of stress represented by Mohr’s circle shown in the figure is uniaxial tension biaxial tension of equal magnitude hydrostatic stress pure shear

The state of stress represented by Mohr’s circle shown in the figure isuniaxial tensionbiaxial tension of equal magnitudehydrostatic stresspure shear

go_editor

5.3k points

go_editor asked Feb 13, 2020

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21

GATE2020 CE-2-10
Soil deposit formed due to transportation by wind is termed as aeolian deposit alluvial deposit estuarine deposit lacustrine deposit

Soil deposit formed due to transportation by wind is termed asaeolian depositalluvial depositestuarine depositlacustrine deposit

go_editor

5.3k points

go_editor asked Feb 13, 2020

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22

GATE2020 CE-2-11
A sample of $500\:g$ dry sand, when poured into a $2$ litre capacity cylinder which is partially filled with water, displaces $188\:cm^3$ of water. The density of water is $1\:g/cm^3.$ The specific gravity of the sand is $2.72$ $2.66$ $2.55$ $2.52$

A sample of $500\:g$ dry sand, when poured into a $2$ litre capacity cylinder which is partially filled with water, displaces $188\:cm^3$ of water. The density of water i...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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23

GATE2020 CE-2-22
A soil has dry unit weight of $15.5\: kN/m^3$, specific gravity of $2.65$ and degree of saturation of $72\: %.$ Considering the unit weight of water as $10\: kN/m^3$, the water content of the soil (in $\%$ round off to two decimal places) is __________.

A soil has dry unit weight of $15.5\: kN/m^3$, specific gravity of $2.65$ and degree of saturation of $72\: %.$ Considering the unit weight of water as $10\: kN/m^3$, the...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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24

GATE2020 CE-2-23
A one-dimensional consolidation test is carried out on a standard $19\: mm$ thick clay sample. The oedometer’s deflection gauge indicates a reading of $2.1\: mm$, just before removal of the load, without allowing any swelling. The void ratio is $0.62$ at this stage. The initial void ratio (round off to two decimal places) of the standard specimen is __________.

A one-dimensional consolidation test is carried out on a standard $19\: mm$ thick clay sample. The oedometer’s deflection gauge indicates a reading of $2.1\: mm$, just ...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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25

GATE2020 CE-2-34
Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The relevant horizontal $(k_h)$ and vertical $(k_v)$ coefficients of permeability are indicated for each layer. The ratio of the equivalent horizontal to vertical coefficients of permeability, is $37.29$ $80.20$ $68.25$ $0.03$

Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The relevant horizontal $(k_h)$ an...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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26

GATE2020 CE-2-47
A constant-head permeability test was conducted on a soil specimen under a hydraulic gradient of $2.5$. The soil specimen has specific gravity of $2.65$ and saturated water content of $20\%.$ If the coefficient of permeability of the soil is $0.1\: cm/s$, the seepage velocity (in $cm/s,$ round off to two decimal places) through the soil specimen is ________.

A constant-head permeability test was conducted on a soil specimen under a hydraulic gradient of $2.5$. The soil specimen has specific gravity of $2.65$ and saturated wat...

go_editor

5.3k points

go_editor asked Feb 13, 2020

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27

GATE2020 CE-2-48
A $5\: m$ high vertical wall has a saturated clay backfill. The saturated unit weight and cohesion of clay are $18\: kN/m^3$ and $20\: kPa$, respectively. The angle of internal friction of clay is zero. In order to prevent development of tension zone, the ... tension zone, the minimum height (in $m$, round off to one decimal place) by which the wall has to be raised, is ________.

A $5\: m$ high vertical wall has a saturated clay backfill. The saturated unit weight and cohesion of clay are $18\: kN/m^3$ and $20\: kPa$, respectively. The angle of in...

go_editor

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go_editor asked Feb 13, 2020

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28

2015 gate mcq true or false type
State true statement for degree of disturbance of collected soil sample

State true statement for degree of disturbance of collected soil sample

Pratikshanere

120 points

Pratikshanere asked Dec 19, 2019

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29

GATE2017 CE-2-4
Let $G$ be the specific gravity of soil solids, $w$ the water content in the soil sample, $\gamma_w$ the unit weight of water, and $\gamma_d$ ... $\gamma_d = \dfrac{Gw}{1 + \gamma_w} \\$ $\gamma_d = \dfrac{Gw}{1 - \gamma_w}$

Let $G$ be the specific gravity of soil solids, $w$ the water content in the soil sample, $\gamma_w$ the unit weight of water, and $\gamma_d$ the dry unit weight of the s...

gatecse

4.0k points

gatecse asked Aug 7, 2019

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30

GATE2017 CE-2-5
Consider the following statements related to pore pressure parameters, $A$ and $B$: $A$ always lies between $0$ and $1.0$ $A$ can be less than $0$ or greater than $1.0$ $B$ always lies between $0$ and $1.0$ $B$ can be less than $0$ or greater than $1.0$ For these statements, which of the following options is correct? P and R P and S Q and R Q and S

Consider the following statements related to pore pressure parameters, $A$ and $B$:$A$ always lies between $0$ and $1.0$$A$ can be less than $0$ or greater than $1.0$$B$ ...

gatecse

4.0k points

gatecse asked Aug 7, 2019

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31

GATE2017 CE-2-35
Following are the statements related to the stress paths in a triaxial testing of soils: If $\sigma_1 = \sigma_3$, the stress point lies at the origin of the $p-q$ plot If $\sigma_1 = \sigma_3$, the stress point lies on the $p$-axis of the $p-q$ plot If $\sigma_1 > \sigma_3$, ... - True P - True; Q - False; R - True P - False; Q - True; R - False P - True; Q - False; R - False

Following are the statements related to the stress paths in a triaxial testing of soils:If $\sigma_1 = \sigma_3$, the stress point lies at the origin of the $p-q$ plotIf ...

gatecse

4.0k points

gatecse asked Aug 7, 2019

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32

GATE2019 CE-1: 17
In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \: \sigma’$, $i$ and $i_c$, respectively. For initiation of quicksand condition, which one of the following statements is TRUE? $\sigma’ \neq 0$ and $i=i_c$ $\sigma’ = 0$ and $i=i_c$ $\sigma’ \neq 0$ and $i \neq i_c$ $\sigma = 0$ and $i=i_c$

In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \: \sigma’$, $i$ and $i_c$, respectively. For in...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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33

GATE2019 CE-1: 24
A soil has specific gravity of its solids equal to $2.65$. The mass density of water is $1000 \: kg/m^3$. Considering zero air voids and $10 \%$ moisture content of the soil sample, the dry density (in $kg /m^3$, round off to $1$ decimal place) would be ______

A soil has specific gravity of its solids equal to $2.65$. The mass density of water is $1000 \: kg/m^3$. Considering zero air voids and $10 \%$ moisture content of the s...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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34

GATE2019 CE-1: 53
A granular soil has a saturated unit weight of $20 \:kN/m^3$ and an effective angle of shearing resistance of $30^{\circ}$. The unit weight of water is $9.81 \: kN/m^3$. A slope is to be made on this soil deposit in which the seepage occurs ... seepage condition for a factor of safety of $1.5$, the safe slope angle (in degree, round off to $1$ decimal place) would be ________

A granular soil has a saturated unit weight of $20 \:kN/m^3$ and an effective angle of shearing resistance of $30^{\circ}$. The unit weight of water is $9.81 \: kN/m^3$. ...

Arjun

13.0k points

Arjun asked Feb 14, 2019

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35

GATE2019 CE-2: 51
The dimensions of a soil sampler are given in the table. ... $2$ decimal places) is ______________

The dimensions of a soil sampler are given in the table.$$\begin{array}{|c|c|c|} \hline \text{Parameter} & \text{Cutting edge} & \text{Sampling tube} \\ \hline \text{Insi...

Arjun

13.0k points

Arjun asked Feb 12, 2019

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36

GATE2019 CE-2: 53
Constant head permeability tests were performed on two soil specimens, $S1$ and $S$. The ratio of height of the two specimens $(L_{S1}: L_{S2})$ is $1.5$, the ratio of the diameter of specimens $(D_{S1}: D_{S2})$ is $0.5$, and the ratio of the ... $(k_{S1}: k_{S2})$ is _____

Constant head permeability tests were performed on two soil specimens, $S1$ and $S$. The ratio of height of the two specimens $(L_{S1}: L_{S2})$ is $1.5$, the ratio of th...

Arjun

13.0k points

Arjun asked Feb 12, 2019

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37

GATE2016-2-13
The results of a consolidation test on an undisturbed soil, sampled at a depth of $10 \: m$ ... weight of water as $10 \: kN/m^3$, the over-consolidation ratio of the soil is $0.67$ $1.50$ $1.77$ $2.00$

The results of a consolidation test on an undisturbed soil, sampled at a depth of $10 \: m$ below the ground level are as follows:$\begin{array}{lcl} \text{Saturated unit...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 27, 2018

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38

GATE2016-2-17
The atmospheric layer closest to the earth surface is the mesosphere the stratosphere the thermosphere the troposphere

The atmospheric layer closest to the earth surface isthe mesospherethe stratospherethe thermospherethe troposphere

Milicevic3306

11.9k points

Milicevic3306 asked Mar 27, 2018

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39

GATE2016-2-40
The seepage occurring through an earthen dam is represented by a flownet comprising of $10$ equipotential drops and $20$ flow channels. The coefficient of permeability of the soil is $3 \: mm/min$ and the head loss is $5 \: m$. The rate of seepage (expressed in $cm^3/s$ per $m$ length of the dam) through the earthen dam is _________

The seepage occurring through an earthen dam is represented by a flownet comprising of $10$ equipotential drops and $20$ flow channels. The coefficient of permeability of...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 27, 2018

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40

GATE2016-2-43
Water flows from P to Q through two soil samples, Soil $1$, Soil $2$, having cross sectional area of $80 \: cm^2$ as shown in the figure. Over a period of $15$ minutes, $200$ ml of water was observed to pass through any cross-section. The flow-conditions ... of permeability of Soil $1$ is $0.02$ mm/s, the coefficient of permeability of Soil $2$ (expressed in mm/s) would be _________

Water flows from P to Q through two soil samples, Soil $1$, Soil $2$, having cross sectional area of $80 \: cm^2$ as shown in the figure. Over a period of $15$ minutes, $...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 27, 2018