Ques 1Gate 2021 Set-2

The void ratio of a clay soil sample M decreased from 0.575 to 0.510 when the applied pressure is increased from 120 kPa to 180 kPa. For the same increment in pressure, the void ratio of another clay soil sample N decreases from 0.600 to 0.550. If the ratio of hydraulic conductivity of sample M to sample N is 0.125, then the ratio of coefficient of consolidation of sample M to sample N (round off to three decimal places) is ________

Ques 2Gate 2021 Set-2

As per the Unified Soil Classification System (USCS), the type of soil represented by "MH" is

a. Inorganic silts of low plasticity with liquid limit less than 50%
b. Inorganic clays of low plasticity with liquid limit more than 50%
c. Inorganic clays of high plasticity with liquid limit less than 50%
d. Inorganic silts of high plasticity with liquid limit more than 50%

Ques 3Gate 2020 Set-2

Soil deposit formed due to transportation by wind is termed as

a. lacustrine deposit
b. alluvial deposit
c. estuarine deposit
d. aeolian deposit

Ques 4Gate 2020 Set-1

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 _______.

Ques 5Gate 2020 Set-1

Which one of the following statements is NOT correct?

a. The ultimate bearing capacity of a strip foundation supported on the surface of sandy soil increases in direct proportion to the width of footing
b. A clay deposit with a liquidity index greater than unity is in a state of plastic consistency
c. The cohesion of normally consolidated clay is zero when triaixal test is conducted under consolidated undrained condition
d. In case of a point load, Boussinesq’s equation predicts higher value of vertical stress at a point directly beneath the load as compared to Westergaard’s equation.

Ques 6Gate 2019 Set-1

A concentrated load of 500 kN is applied on an elastic half space. The ratio of the increase in vertical normal stress at depths of 2m and 4m along the point of the leading, as per Boussinesq’s theory, would be __________.

Ques 7Gate 2018 Set-1

The percent reduction in the bearing capacity of a strip footing resting on sand under flooding condition (water level at the base of the footing) when compared to the situation where the water level is at a depth much greater than the width of footing, is approximately

a. 0
b. 25
c. 50
d. 100

Ques 8Gate 2018 Set-1

The width of a square footing and the diameter of a circular footing are equal. If both the footings are placed on the surface of sandy soil, the ratio of the ultimate bearing capacity of circular footing to that of square footing will be

a. 4/3
b. 25
c. 3/4
d. 2/3

Ques 9Gate 2017 Set-1

A uniformly distributed line load of 500 kN/m is acting on the ground surface. Based on Boussinesq’s theory, the ratio of vertical stress at a depth 2 m to that at 4 m, right below the line of loading, is

a. 0.5
b. 0.25
c. 2.0
d. 4.0

Ques 10Gate 2017 Set-1

A soil sample is subjected to a hydrostatic pressure σ, The Mohr circle for any point in the soil sample would be

a. a circle of radius σ and center at the origin
b. a circle of radius σ and center at a distance from the origin
c. a point at a distance σ from the origin
d. a circle of diameter σ and center at the origin