1
GATE CE 2025 Set 1
MCQ (Single Correct Answer)
+2
-0.67

In an oedometer apparatus a specimen of fully saturated clay has been consolidated under a vertical pressure of 100 kPa and is at equilibrium state. Immediately on increasing the vertical pressure to 150 kPa , the effective stress $\sigma^{\prime}$ and excess pore water pressure $\Delta u$ will be

A
$\sigma^{\prime}=50 \mathrm{kPa}, \Delta u=100 \mathrm{kPa}$
B
$\sigma^{\prime}=100 \mathrm{kPa}, \Delta u=50 \mathrm{kPa}$
C
$\sigma^{\prime}=150 \mathrm{kPa}, \Delta u=50 \mathrm{kPa}$
D
$\sigma^{\prime}=100 \mathrm{kPa}, \Delta u=150 \mathrm{kPa}$
2
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+2
-0.67

A soil sample is underlying a water column of height h1, as shown in the figure. The vertical effective stresses at point A, B and C are $$\sigma {'_A}$$, $$\sigma {'_B}$$ and $$\sigma {'_C}$$ respectively. Let $$\gamma$$sat and $$\gamma$$' be the saturated and submerged unit weights of the soil sample, respectively and $$\gamma$$w be the unit weight of water. Which one of the following expressions correctly represents the sum ($$\sigma {'_A}$$ + $$\sigma {'_B}$$ + $$\sigma {'_C}$$) ?

GATE CE 2022 Set 2 Geotechnical Engineering - Effective Stress and Permeability Question 5 English

A
(h1 + h2 + h3)$$\gamma$$sat
B
(2h2 + h3)$$\gamma$$'
C
(h2 + h3) ($$\gamma$$sat $$-$$ $$\gamma$$w)
D
(h1 + h2 + h3)g'
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