1. Rise of water table above the ground surface ____.

[A] Equal increase in pore water pressure and total stress

[B] Equal decrease in pore water pressure and in total stress

[C] Increase in pore water pressure but decrease in total stress

[D] Decrease in pore water pressure but increase in total stress

Answer: Option C


2. Piping occurs when ____.

[A] Effective stress is zero

[B] Flow is downwards

[C] Flow is upwards

[D] Flow is horizontal

Answer: Option A


3. Consider the following statements:

(i) Quicksand is a special variety of sand
(ii) Quicksand is not a material but a hydraulic condition.
(iii) In nature, quicksand condition is observed usually in coarse silt or fine sand. Which of the above statements are correct?

[A] (i), (ii) and (iii)

[B] (i) and (ii)

[C] (ii) and (iii)

[D] (i) and (iii)

Answer: Option C


4. Hydrostatic pressure on the phreatic line within a dam section

[A] Gradually decreases

[B] Is less than atmospheric pressure

[C] is equal to atmospheric pressure

[D] is greater than atmospheric pressure

Answer: Option C


5. The Westergaard analysis is used for

[A] Sandy soils

[B] Stratified soils

[C] Cohesive soils

[D] Clayey soils

Answer: Option B




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