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Civil Engineering :: Soil Mechanics and Foundation Engineering

  1. The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to

  2. A.
    30°
    B.

    45°

    C.

    60°

    D.

    90°


  3. For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is

  4. A.

    15%

    B.

    18%

    C.
    20%
    D.
    25%

  5. Buoyant unit weight equals the saturated density

  6. A.

    multiplied by unit weight of water

    B.

    divided by unit weight of water

    C.
    plus unit weight of water
    D.
    plus unit weight of water

  7. Pick up the correct statement from the following:

  8. A.

    An unconfined compression test is a special case of triaxial compression test

    B.

    An unconfined compression test is a special case of direct shear test

    C.

    The confining pressure is maximum during an unconfined compression test

    D.

    The cylindrical specimen of a soil is subjected to major principal stress till it fails due to shearing along the plane of the failure.


  9. A partially saturated soil is classified as

  10. A.

    one phase soil

    B.

    two phase soil

    C.

    three phase soil

    D.

    four phase soil.


  11. Pick up the in-correct statement from the following: The soils which contain montmorillonite minerals

  12. A.

    swell more when wet

    B.

    shrink more when dry

    C.
    possess high plasticity
    D.

    possess high coefficient of internal coefficient

    E.

    None of these.


  13. For determing the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled = 850 g water filled in pycnometer up to top The specific gravity of soil soilds, is

  14. A.
    2.0
    B.

    2.25

    C.

    2.50

    D.
    2.75

  15. Pick up the correct statement from the following:

  16. A.

    Kaolinite is most stable clay

    B.

    Kaolinite shows a very little sign of swelling on wetting

    C.

    Kaolinite when wet, becomes moderately plastic because negative electro magnetic charges on platelets attrack water

    D.

    Kaolinite is also called China clay

    E.

    All the above.


  17. A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is

  18. A.

    100 tonnes

    B.

    50 tonnes

    C.

    20 tonnes

    D.

    10 tonnes.


  19. If the specific gravity and voids in soil sample are G and e respectively, the hydraulic gradient i, is

  20. A.

    \(\frac {G -1 } { 1+e }\)

    B.

    \(\frac {G +1 } { 1-e }\)

    C.

    \(\frac {1-G } { 1+e }\)

    D.

    \(\frac {1+G } { 1+e }\)