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Soil Mechanics and Foundation - Interview Questions and Answers

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46. Rise of water table above the ground surface causes
A. equal increase in pore water pressure and total stress
B. equal decrease in pore water pressure and total stress
C. increase in pore water pressure but decrease in total stress
D. decrease in pore water pressure but increase in total stress
Explanation:
47. Effective stress is
A. the stress at particles contact
B. a physical parameter that can be measured
C. important because it is a function of engineering properties of soil
D. all of the above
Explanation:
48. Highway Research Board (HRB) classification of soils is based on
A. particle size composition
B. plasticity characteristics
C. both particle size composition and plasticity characteristics
D. none of the above
Explanation:
49. A pycnometer is used to determine
A. water content and voids ratio
B. specific gravity and dry density
C. water content and specific gravity
D. voids ratio and dry density
Explanation:
50. If the plasticity index of a soil mass is zero, the soil is
A. sand
B. silt
C. clay
D. clayey silt
Explanation: