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GATE 2019 Soil Mechanics Quiz 4 (App update required to attempt this test)

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Question 1

Which of following statement is NOT true in the context of capillary pressure in soils?

Question 2

A fully saturated capillary zone of thickness 1.5 m exists above water table in fine silty sand deposit, then the pore water pressure (in kN/m2) at 1 m above the water table is

Question 3

Consider the following statements:
1). Effective stress in a sand layer below a lake with standing water does not alter as the water level fluctuates.
2). Regarding the water table below the ground surface, any rise in the water table causes equal amount of changes in both pore pressure and total stress.
3). Capillary saturation will cause effective stress to increase.
Which of these statements are correct?

Question 4

Assertion (A):Permanent lowering of ground water table result in settlement of foundations.
Reason (R): increase in effective stress does not result in settlement of strata.

Question 5

A soil mass under seepage has a downward flow of water. Which of the following statements are correct with regard to stresses at any point in the soil mass?
1). Effective stress is decreased by an amount equal to the seepage force
2). Effective stress is increased by an amount equal to the seepage force.
3). Total Stress will change
4). Total stress will be unaltered
Select the correct answer using the codes given below:

Question 6

A seepage flow condition is shown in the figure. The saturated unit weight of the soil Using unit weight of water, the effective vertical stress (expressed in kN/m2) on plane X-X is ___________.
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Jun 14ESE & GATE CE