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Civil Engineering :: UPSC Civil Service Exam Questions

  1. A uniform simply supported beam is subjected to a clockwise moment at the left end. What is the moment required at the right end so that rotation of the right end is zero ?

  2. A.
    2 m
    B.
    m
    C.
    m/2
    D.
    m/3

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  3. A cylindrical bar of 20 mm diameter and 1 m length is subjected to a tensile test. Its longitudinal strain is 4 times that of its lateral strain. If the modulus of elasticity is 2 x 105 N/mm2, then its modulus of rigidity will be

  4. A.
    8 x 106 N/mm2
    B.
    8 x 105 N/mm2
    C.
    0.8 x lO4 N/mm2
    D.
    0.8 x 105 N/mm2

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  5. Clapeyron's theorem is applied to

  6. A.
    simply supported beam
    B.
    fixed and continuous beam
    C.
    propped cantilever beam
    D.
    continuous beam only

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  7. A fill having a volume of 150, 000 cm is to be constructed at a void ratio of 0.8. The borrow pit soil has a void ratio of 1.4. The volume of soil required (in cubic metres) to be excavated from the borrow pit will be

  8. A.
    1, 87, 500
    B.
    2, 00, 000
    C.
    2, 10, 000
    D.
    2, 50, 000

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  9. A fixed beam as shown in Fig. I is loaded with a U.D.L. over the entire span, the total load being W; when load was just increased to W1, the deformed shape as shown in Fig. II was seen. The value of W1 (plastic moment of resistance = Mp) is

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  11. The resultant of the coplanar, concurrent system of forces F1, F2, F3 and F4 shown in the above figure is

  12. A.
    20kN acting vertically upwards
    B.
    zero
    C.
    20 kN acting vertically downwards
    D.
    20 kN acting horizontally from left to right

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  13. During seepage through an earth mass, the direction of seepage is

  14. A.
    parallel to the equipotential lines
    B.
    perpendicular to the stream lines
    C.
    perpendicular1 to the equipotential lines
    D.
    along the direction of gravity

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  15. Consider the following statements :
    The effect of sea water on hardened concrete is to
    1. increase its strength
    2. reduce its strength
    3. retard setting
    4. decrease its durability.
    Of these statements :

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

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  17. A doubly reinforced concrete beam has effective cover d' to the centre of compression reinforcement. xu is the depth of neutral axis, and d is the effective depth to the centre of tension reinforcement. What is the maximum strain in concrete at the level of compression reinforcement?

  18. A.
    0.0035 (1 - d'/d)
    B.
    0.0035(1 - d'/xu)
    C.
    0.002(1 - d'/xu)
    D.
    0.002(1 - d'/d)

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  19. By what percentage is length of a runway increased for every 300 m rise above M.S.L. ?

  20. A.
    3%
    B.
    4%
    C.
    6%
    D.
    7%

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