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Civil Engineering :: UPSC Civil Service Exam Questions

  1. The moment of inertia of a given rectangular area is minimum about

  2. A.
    its longer centroidal axis
    B.
    its polar axis
    C.
    its axis along the diagonal
    D.
    its shorter centroidal axis

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  3. If the efficiencies of BOD removal of first-stage and second-stage trickling filters are each 65.0%, then what is the overall BOD removal efficiency of these filters ?

  4. A.
    65%
    B.
    77.25%
    C.
    87.75%
    D.
    92.6%

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  5. Which one of the following tests can be carried out at the construction site to determine the dynamic elastic properties of soil ?

  6. A.
    Block vibration test
    B.
    Dutch cone penetration test
    C.
    Standard penetration test
    D.
    Vane shear test

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  7. A particle moves with simple harmonic motion. If its acceleration at distance 'D' from the equilibrium position is 'A' then the period of the motion is given by

  8. A.
    AD
    B.
    C.
    D.

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  9. Consider the following statements :
    A high lime content in a composite cement-lime mortor results in
    1. slow hardening.
    2. quick setting.
    3. weaker mortar.
    Of these statements :

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

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  11. Seasoning of timber is required to

  12. A.
    soften the timber
    B.
    harden the timber
    C.
    straighten the timber
    D.
    remove sap from the timber

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  13. Four vertical columns of the same material, height and weight have the same end condition. The buckling load will be the largest for a column having the cross-section of a/an

  14. A.
    solid square
    B.
    thin hollow circle
    C.
    solid circle
    D.
    I

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  15. A beam has a solid circular cross-section having diameter d. If a section of the beam is subjected to a shear force F the maximum shear stress in the cross-section is given by

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  17. A cantilever beam of span 4 m and cross-sectional are 0.3 m wide and 0.4 m deep is subjected to a concentrated load of 10 kN at the free end. Neglecting self-weight, the maximum bending stress at a section 2 m from the free end will be

  18. A.
    20 kN/m2
    B.
    2500 kN/m2
    C.
    4000 kN/m2
    D.
    5000 kN/m2

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  19. A simply supported beam AB of span 'l' has a form cross-section throughout. It carries a central concentrated load W and another load which is uniformly distributed over the entire span, its total magnitude being W. The minimum deflection in the beam is

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