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Civil Engineering :: UPSC Civil Service Exam Questions

  1. For Froude number of a hydraulic jump is 5.5. The jump can be classified as a/an:

  2. A.
    undularjump
    B.
    oscillating jump
    C.
    weak jump
    D.
    steady jump

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  3. A cantilever pin-jointed truss carries one load P at the point Z as shown in the given figure. The hinges in the vertical wall are at A and D. The truss has only three horizontal members AC, CG and GZ.
    The nature of force in member AB

  4. A.
    is tensile
    B.
    is zero
    C.
    is compressive
    D.
    cannot be predicted

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  5. A saturated stiff clay has unit weight 2 gm/cm3 and unconfined compressive strength 2 kg/cm2. The depth of tension crack that would develop in this clay is

  6. A.
    2 m
    B.
    5 m
    C.
    10 m
    D.
    20 m

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  7. Consider the following statements :
    1. In a member subjected to uniaxial tensile force the maximum normal stress is the external load divided by the maximum cross-sectional area.
    2. When the structural member is subjected to uniaxial loading, the shear stress is zero on a plane where the normal stress is maximum.
    3. In a member subjected to uniaxial loading, the normal stress on the planes of maximum shear stress is less than the maximum.
    Of these statements :

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

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  9. .The displacement thickness of a boundary layer is

  10. A.
    The distance to the point where (v/V) = 0.99
    B.
    the distance where the velocity v is equal to the shear velocity V∗ that is where v = V∗
    C.
    the distance by which the main flow is to be shifted from the boundary to maintain the continuity equation
    D.
    one-half the actual thickness of the boundary layer

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  11. The axial load which just produces the condition of elastic instability in a column is

  12. A.
    Rankine load
    B.
    Euler load
    C.
    Yield load
    D.
    Crushing load

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  13. If R is the radius of the circular railway curve in metres and D is the degree of the curve, then which one of the following is the expression for D ?

  14. A.
    D = 360/R
    B.
    D = 1080/R
    C.
    D = 1720/R
    D.
    D = 720/R

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  15. Given below are methods of compaction :
    1. Vibration technique
    2. Flooding the soil
    3. Sheeps-foot roller
    4. Tandem roller
    5. Heavy weights dropped from a height.
    The methods suitable for cohesionless soils include

  16. A.
    1, 2 and 3
    B.
    2, 3 and 4
    C.
    1, 2 and 5
    D.
    3, 4 and 5

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  17. The ratio of torsional moments of resistance of a solid circular shaft of diameter D and a hollow shaft having external diameter D and internal diameter d is given by

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  19. Consider the following statements relating to triaxial tests :
    1. Change in length of the specimen in a triaxial shear test is required to be accounted for in the calculation of stresses at failure.
    2. In 'Drained Triaxial Shear Test', drainage is permitted under a specified all-round pressure until consolidation is complete. The principal stress difference is then applied with no drainage being permitted.
    3. Unconfined compression test is a special case of triaxial shear test.
    Of these statements :

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

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