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Civil Engineering :: UPSC Civil Service Exam Questions

  1. Two springs of stiffnesses KA and KB are placed on inside the other so as to compressed by the same amount under an applied axial load. The combined stiffness of the two springs will be

  2. A.
    B.
    KA KB/(KA + KB)
    C.
    (KA + KB)/2
    D.
    KA + KB

  3. If the Young's modulus 'E' is equal to bulk modulus 'K', then what is the value of the Posson's ratio ?


  4. At the time of initial tensioning the maximum tensile stress in tendon immediately behind the anchorage shall Not exceed

  5. A.
    50% of the ultimate tensile strength of the wire or bar strength
    B.
    80% of the ultimate tensile strength of the wire or bar strength
    C.
    40% of the ultimate tensile strength of the wire or bar strength
    D.
    60% of the ultimate tensile strength of the wire strength

  6. The following statements relate to a laminar flow :
    1. Laminar flow is rotational.
    2. In laminar flow the loss of head is proportional to the square of the velocity.
    3. In laminar flow the loss of head is proportional to the first power of viscosity.
    4. In laminar flow the velocity is constant over the cross-section.
    5. Other quantities remaining the same, increase in diameter will increase the Reynolds number in laminar flow.
    Of these statements :

  7. A.
    1, 2 and 4 are correct
    B.
    1, 3 and 4 are correct
    C.
    1, 3 and 5 are correct
    D.
    2, 3 and 5 are correct

  8. Plate load test is useful to estimate

  9. A.
    Bearing capacity of foundation
    B.
    Settlement of foundation
    C.
    Both bearing capacity and settlement of foundation
    D.
    Depth of foundation

  10. In the figure shows two blocks of equal weights designated as W1 and W2 connected together by a rod and resting on an inclined plane whose angle α can be varied. The coefficients of friction between the blocks and the surface of the plane are μ1 = 0.2 and μ2 = 0.3. The value of angle α at which the slipping will commence is given by

  11. A.
    tan α = 0.1
    B.
    tan α = 0.2
    C.
    tan α = 0.25
    D.
    tan α = 0.8

  12. The most suitable type of equipment for compaction of cohesive soils is

  13. A.
    Smooth-wheeled rollers
    B.
    Vibratory rollers
    C.
    Sheep foot rollers
    D.
    Tampers

  14. Ringelmann's scale is used to

  15. A.
    measure CO
    B.
    measure SO2
    C.
    grade density of smoke
    D.
    grade automobile exhaust gas

  16. Consider the following statements :
    1. Obtaining reliable properties of soil is very important in geotechnical engineering. Chunk
    samples obtained from the field are the best for this purpose.
    2. Chunk samples may easily be obtained at all depths below ground level and for all types of soils.
    3. Undisturbed soil samples are enclosed in rugged containers. As such, they do not get disturbed easily during transportation and handling.
    Which of the statements given above is/are correct ?

  17. A.
    1, 2 and 3
    B.
    1 only
    C.
    2 and 3
    D.
    1 and 3

  18. In a V-notch, an error of 1% in the measurement of head would constitute in the discharge measurement, an error of

  19. A.
    1.0%
    B.
    1.5%
    C.
    2.0%
    D.
    2.5%