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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1. The Mohr's straight theory is based on the following fact :

  2. A.

    Material fails essentially by shear

    B.

    Ultimate strength of the material is determined by the stress in the plane of slip

    C.

    Failure criterion is independent of the intermediate principal stress

    D.
    All the above.

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  3. Hydrometer readings are corrected for:

  4. A.

    temperature correction

    B.

    meniscus correction

    C.

    dispersing agent correction

    D.

    meniscus and dispersing agent corrections

    E.

    temperature, meniscus and dispersing agent corrections.

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  5. Tergazhi's theory of one dimensional consolidation assumes

  6. A.

    soil is homogeneous and fully saturated

    B.

    water and soil particles are incompressible

    C.

    deformation of the soil, is entirely due to change in volume

    D.

    Darcey's law for the velocity of flow of water through soil, is perfectly valid

    E.

    all the above.

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  7. An unsaturated 100 cm3 sample of soil weighs 190 g. If its dried weight is 160 g, water content of the soil, is

  8. A.

    0.188

    B.

    0.288

    C.

    0.388

    D.

    0.488

    E.

    0.588

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  9.  

    If the natural moisture content, the liquid limit and plastic limit of a soil sample are stated as 30.5%, 42.5% and 22.5% respectively, the ratio of liquidity index and plastic index, is

  10. A.

    \(\frac { 1 } { 3 } \)

    B.

    \(\frac { 1 } { 2 }\)

    C.

    2

    D.

    2\(\frac { 1 } { 2 }\)

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  11. The specific gravity of Calcite is

  12. A.

    2.65

    B.

    2.72

    C.

    2.85

    D.
    2.90

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  13. The ratio of volume of air voids to the volume of total voids, is known as

  14. A.

    air content

    B.

    percentage air voids

    C.

    percentage voids

    D.

    porosity.

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  15. A plane inclined at an angle φ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as

  16. A.

    natural slope line

    B.

    repose line

    C.
    the φ line
    D.
    all the above.

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  17. Tergazhi's theory of one dimensional consolidation assumes

  18. A.

    load is applied in one direction

    B.

    coefficient of permeability is constant

    C.

    excess pore water drains out only in the vertical direction

    D.

    time lag in consolidation is due entirely to permeability

    E.

    all the above.

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  19. Pick up the correct statement from the following:

  20. A.

    The dry density reduces by addition of water after attaining optimum moisture content

    B.

    The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus

    C.

    Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils

    D.

    All the above. .

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