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Civil Engineering :: Soil Mechanics and Foundation

  1. Valid range for n, the percentage voids, is

  2. A.

     0 < n < 100

    B.

     0 ≤ n ≤ 100

    C.

     n > 0

    D.

     n < 0


  3. Rankine’s theory of earth pressure assumes that the back of the wall is

  4. A.

     plane and smooth

    B.

     plane and rough

    C.

     vertical and smooth

    D.

     vertical and rough


  5. The most suitable method for drainage of fine grained cohesive soils is

  6. A.

     well ppint system

    B.

     vacuum method

    C.

     deep well system

    D.

     electroosmosis method


  7. With the increase in the amount of compaction energy

  8. A.

     optimum water content increases but maximum dry density decreases

    B.

     optimum water content decreases but maximum dry density increases

    C.

     both optimum water content and maximum dry density increase

    D.

     both optimum water content and maximum dry density decrease[ES 93]


  9. In a deposit of normally consolidated clay

  10. A.

     effective stress increases with depth but water content of soil and un-drained strength decrease with depth

    B.

     effective stress and water content increase with depth but undrained strength decreases with depth

    C.

     effective stress and undrained strength increase with depth but water content decreases with depth

    D.

     effective stress, water content and undrained strength decrease with depth


  11. Which of the following methods is most accurate for the determination of the water content of soil ?

  12. A.

     oven drying method

    B.

     sand bath method

    C.

     calcium carbide method

    D.

     pycnometer method


  13. The maximum dry density upto which any soil can be compacted depends upon

  14. A.

     moisture content only

    B.

     amount of compaction energy only

    C.

     both moisture content and amount of compaction energy

    D.

     none of the above


  15. Toughness index is defined as the ratio of

  16. A.

     plasticity index to consistency index

    B.

     plasticity index to flow index

    C.

     liquidity index to flow index

    D.

     consistency index to liquidity index


  17. The value of compression index for a remoulded sample whose liquid limit is 50% is

  18. A.

     0.028

    B.

     0.28

    C.

     036

    D.

     0.036


  19. For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as

  20. A.

     dry of OMC and wet of OMC

    B.

     wet of OMC and dry of OMC

    C.

     wet of OMC and wet of OMC

    D.

     dry of OMC and dry of OMC where OMC is optimum moisture content