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Civil Engineering :: UPSC Civil Service Exam Questions

  1. Which one of the following closely represents the shape of the earth?

  2. A.
    Spheroid
    B.
    Ellipsoid
    C.
    Oblate spheroid
    D.
    Prolate spheroid

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  3. In an old map, line PQ was drawn to a magnetic bearing of 6°32', the magnetic declination at that time being 1° East. The present magnetic declination is 9°42' East. The magnetic bearing to which the line is set at present is

  4. A.
    357° 50'
    B.
    356° 50'
    C.
    3° 10'
    D.
    2° 10'

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  5. Based on the Gaussian law of distribution of random errors, the number of errors that are expected to exceed the limit of ± a, where 0 represents the standard deviation, out of 1000 observations is

  6. A.
    317
    B.
    46
    C.
    30
    D.
    3

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  7. In a trigonometric levelling, the height of the signal used is 4.62 m and the instrument height is 1.25 m. If the horizontal distance of the target from the instrument is 5780 m, then the axis-signal correction is

  8. A.
    seconds
    B.
    seconds
    C.
    seconds
    D.
    seconds

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  9. The rotation of a rigid body is governed by What is its angular velocity at t - 2s ?

  10. A.
    18 rad/s
    B.
    π/4 rad /s
    C.
    π/8 rad /s
    D.
    zero.

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  11. The figure shows a rigid frame fixed at A and hinged at C.
    If a pure moment of 20 kNm is applied at B in the plane of the figure, then what is the moment at the fixed end A?

  12. A.
    10 kNm
    B.
    7.5 kNm
    C.
    5 kNm
    D.
    2.5 kNm

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  13. The effective throat thickness in mm of a 6 mm size fillet weld with an angle of 75° between the fusion faces is

  14. A.
    3.6
    B.
    4.0
    C.
    4.2
    D.
    4.5

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  15. Which one of the following is the correct statement ? A streamlined body is one for which the

  16. A.
    skin friction is zero.
    B.
    thickness of the body is less than 1/100 of its length
    C.
    corners are rounded off.
    D.
    separation occurs, if at all, at the farthest downstream part of the body.

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  17. The correct sequence of plasticity of min-erals in soil in an increasing order is

  18. A.
    Silica, Kaolinite, Illite, Montmorillonite
    B.
    Kaolinite, Silica, Illite, Montmorillonite
    C.
    Silica, Kaolinite, Montmorillonite, Illite
    D.
    Kaolinite, Silica, Montmorillonite, Illite

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  19. Why is a proportional flow weir provided in a grit chamber ?

  20. A.
    To reduce the suspended solids entering into the grit chamber
    B.
    To maintain the constant flow depth in the grit chamber
    C.
    To take care of maintaining constant flow velocity in the grit chamber over a certain depth range
    D.
    To allow the sewage afresh into the grit chamber

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