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Civil Engineering :: UPSC Civil Service Exam Questions

  1. A beam of uniform strength refers which one of the following ?

  2. A.
    A beam in which extreme fibre stresses are same at all cross-sections along the length of the beam.
    B.
    A beam in which the moment of inertia about the axis of bending is constant at all cross-sections of the beam.
    C.
    A beam in which the distribution of bending stress across the depth of cross-section is uniform of all cross-sections of the beam.
    D.
    A beam in which the bending stress is uniform at the maximum bending moment cross-section.

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  3. A sample of ground water at a pH of 7.0 contains 122 mg/l of bicarbonates. What is the alkalinity of this water (in terms of CaC0 ) ?

  4. A.
    120 mg/1
    B.
    60 mg/1
    C.
    100 mg/1
    D.
    200 mg/l

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  5. The effective depth of a singly reinforced rectangular beam is 30 cm. The section is over-rein-forced and the neutral axis is 12 cm below the top. If the maximum stress attained by concrete is 50 kg/cm2 and the modular ratio is 18, then the stress developed in steel would be

  6. A.
    1800 kg/cm2
    B.
    1600 kg/cm2
    C.
    1350 kg/cm2
    D.
    1300 kg/cm2

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  7. Soil at a site consists of two layers. The top layer has permeability k units and bottom layer has permeability 5k units. If the thickness of both the layers is equal, then what is the average permeability in the vertical direction ?

  8. A.
    3k units
    B.
    (5/3)k units
    C.
    (6/5)k units
    D.
    (5/6)k units

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  9. A part of the Newmark's influence chart with four concentric circles is shown in the above figure. If the hatched areas 1 and 2 are loaded separately with the same intensity of loading, then the intensity of pressure yielded

  10. A.
    By 1 will be more than that yielded by 2
    B.
    By 2 w ill be more than that yielded by 1
    C.
    By 1 and 2 will be equal
    D.
    at the centre will be in inverse proportion to the radii of the two, circles

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  11. The loss of prestress due to shrinkage of concrete is the product of

  12. A.
    modular ratio and percentage of steel
    B.
    modulus of elasticity of concrete and shrinkage of concrete
    C.
    modulus of elasticity of steel and shrinkage of concrete
    D.
    modular ratio and modulus of elasticity of steel

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  13. Which one of the following pressure units represents the LEAST pressure ?

  14. A.
    Millibar
    B.
    mm of mercury
    C.
    N/mm2
    D.
    kgf/cm2

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  15. A cantilever is loaded as shown in the given figure. The bending moment along the length is

  16. A.
    uniform
    B.
    uniformly varying
    C.
    zero
    D.
    concentrated at the free end

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  17. Consider the following statements in regard to aerobic and anaerobic treatment processes :
    1. Biomass production in the aerobic treatment process is more as compared to the anaerobic treatment process.
    2. Start-up period is more in the aerobic treatment process as compared to the anaerobic treatment process.
    3. Energy consumption and production is more in the aerobic treatment process as compared to the anaerobic treatment process.
    Which of the statements given above is/are correct ?

  18. A.
    1 and 2
    B.
    2 and 3
    C.
    only 2
    D.
    only 1

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  19. Earth pressure and resultant possibilities of wall movement are shown in the given diagram. The point marked 'x' in the diagram denotes

  20. A.
    earth pressure.at rest
    B.
    active earth pressure
    C.
    arching active pressure
    D.
    passive earth pressure

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