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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1. Pick up the incorrect statement from the following:

  2. A.

    The smaller the size of the pores, the higher the water can rise above the water table.

    B.

    Below the water table, the pore water may be static.

    C.

    The hydrostatic pressure depends on the depth below the water level.

    D.

    The attractive forces between the particles, caused due to negative pressure of water held above the water table is called soil suction

    E.

    None of these


  3. The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known

  4. A.
    liquid limit
    B.
    plastic limit
    C.

    shrinkage limit

    D.

    permeability limit.


  5. A sample of saturated soil has 30% water content and the specific gravity of soil grains is 2.6. The dry density of the soil mass in g/cm3, is

  6. A.
    1.47
    B.
    1.82
    C.

    1.91

    D.
    none of these.

  7. The specific gravity of sands, is approximately

  8. A.

    1.6

    B.

    2.0

    C.

    2.2

    D.
    2.4
    E.

    2.6


  9. If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is

  10. A.

    1.10

    B.

    1.15

    C.

    1.20

    D.
    1.25
    E.

    1.30


  11. The minimum centre to centre distance of friction piles of 1 m diameter, is

  12. A.

    2 m

    B.
    2 m to 3 m
    C.

    3 m to 4 m

    D.

    5 m


  13. Over-consolidation of soils is caused due to

  14. A.

    erosion of over burden

    B.

    melting of ice sheets after glaciation

    C.

    permanent rise of water table

    D.

    all the above


  15. Darcy's law is applicable to seepage if a soil is

  16. A.

    homogeneous

    B.

    isotropic

    C.

    incompressible

    D.

    all the above.


  17. An infinite slope is inclined at angle i and has its angle of internal friction φ, the stability number Sa, is

  18. A.

    B.

    C.

    (tan i - tan φ) cos2 i

    D.

    (tan i - tan φ) sin2 i


  19. Depending upon the properties of a material, the failure envelope may

  20. A.

    be either straight or curved

    B.

    pass through the origin of stress

    C.

    intersect the shear stress axis

    D.

    all the above.