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Civil Engineering :: Soil Mechanics and Foundation

  1. If the water table rises upto ground surface, then the

  2. A.

     effective stress is reduced due to decrease in total stress only but pore water pressure does not change

    B.

     effective stress is reduced due to increase in pore water pressure only but total stress does not change

    C.

     total stress is reduced due to increase in pore water pressure only but effective stress does not change

    D.

     total stress is increased due to decrease in pore water pressure but effective stress does not change


  3. Total number of stress components at a point within a soil mass loaded at its boundary is

  4. A.

     3

    B.

     6

    C.

     9

    D.

     16


  5. Constant head permeameter is used to test permeability of

  6. A.

     silt

    B.

     clay

    C.

     coarse sand

    D.

     fine sand


  7. Bishop’s method of stability analysis

  8. A.

     is more conservative

    B.

     neglects the effect of forces acting on the sides of the slices

    C.

     assumes the slip surface as an arc of a circle

    D.

     all of the above


  9. The water content of soil, which represents the boundary between plastic state and liquid state, is known as

  10. A.

     liquid limit

    B.

     plastic limit

    C.

     shrinkage limit

    D.

     plasticity index


  11. Which of the following types of soil is transported by gravitational forces ?

  12. A.

     loess

    B.

     talus

    C.

     drift

    D.

     dune sand


  13. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is

  14. A.

     90°

    B.

     45°

    C.

     22.5°

    D.

     0°


  15. If the shearing stress is zero on two planes, then the angle between the two planes is

  16. A.

     45°

    B.

     90°

    C.

     135°

    D.

     225°


  17. Allowable bearing pressure for a foundation depends upon

  18. A.

     allowable settlement only

    B.

     ultimate bearing capacity of soil only

    C.

     both allowable settlement and ultimate bearing capacity

    D.

     none of above


  19. The shear strength of a soil

  20. A.

     Is directly proportional to the angle of internal friction of the soil

    B.

     Is inversely proportional to the angle of internal friction of the soil

    C.

     Decreases with increase in normal stress

    D.

     Decreases with decrease in normal stress