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Civil Engineering :: UPSC Civil Service Exam Questions

  1. A river is the source of water for water supply to a town. Its water is very turbid and polluted. The correct sequence of steps for treating the river water would be :

  2. A.
    Presedimentation -> prechlorination -> coagulation -> sedimentation -> filtration -> post chlorination
    B.
    coagulation -> sedimentation -> post-chlorination
    C.
    coagulation -> filtration -> sedimentation -> post-chlorination
    D.
    sedimentation -> post-chlorination

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  3. What is the probable maximum precipitation (PMP) ?

  4. A.
    Projected precipitation for a 100-yr return period
    B.
    Maximum precipitation for all past recorded storms
    C.
    Upper limit of rainfall, which is justified climatologically
    D.
    Effective precipitable water

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  5. Westergaard's analysis for stress distribution beneath loaded area is applicable to

  6. A.
    sandy soils
    B.
    clayey soils
    C.
    stratified soils
    D.
    silty soils

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  7. Which of the following variations of magnetic declination are correctly matched ?
    1. Diurnal variation..........Variation whose time period varies from 100-350 years
    2. Annual variation.........Annual rate of change of secular variation
    3. Secular variaiion..........Variation of declination periodic in character
    4. Irregular variation.........Caused due to magnetic storms in earth's magnetic field
    Select the correct answer using the codes given below :

  8. A.
    1, 3 and 4
    B.
    2 and 3
    C.
    1 and 4
    D.
    3 and 4

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  9. In order to find the resultant of a system of coplanar parallel system of forces, the correct sequence of the graphical procedure to be followed is

  10. A.
    force diagram, space diagram, funicular polygon and polar diagram
    B.
    funicular polygon, force diagram, space diagram and polar diagram
    C.
    space diagram, force diagram, polar diagram and funicular polygon
    D.
    space diagram, funicular polygon, force diagram and polar diagram.

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  11. Given that,
    t = thickness of the plates,
    b = width of the plates,
    d = diameter of the rivets,
    n = number of rivets in a line,
    σt = permissible tensile stress.
    The tearing strength of the joint is given by

  12. A.
    t(b - ndt
    B.
    t(b + ndt
    C.
    (bt - nd/tt
    D.
    (bt - nd/tt

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  13. Consider the following statements pertaining to a pile group and a single pile at failure :
    1. In loose and medium dense sands, the failure load per pile in a group will generally be greater than the failure load for a single pile.
    2. In cohesive soils, the failure load per pile in a group will be greater than failure load for a single pile.
    3. For piles driven in dense sands, the failure load per pile in a group is greater than the failure load for a single pile.
    4. When the pile spacing is greater than 10 times the pile diameter, the failure loads per pile in a group and forly same in both sands and clays.
    Of these statements :

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

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  15. A surge tank is provided in a hydropower scheme to

  16. A.
    provide additional storage close to the penstock
    B.
    take care of change of slope, alignment or size of the water conductor system
    C.
    reduce the pressures under transient conditions
    D.
    provide convenient overspills

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  17. If the settlement of a single pile in sand is denoted by S and that of a group of N identical piles (each pile carrying the same load) by Sg, then the ratio Sg/S will

  18. A.
    be equal to 1 irrespective of width of the group
    B.
    be equal to N irrespective of width of the group
    C.
    decrease as the width of the group increases
    D.
    increase as the width of the group increases

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  19. For the analysis of flow in a water distribution network, the site engineers prefer the following head loss equation :

  20. A.
    Darcy-Weisbach equation
    B.
    Chezy's equation
    C.
    Hazen-William's equation
    D.
    Manning's equation

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