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Civil Engineering :: UPSC Civil Service Exam Questions

  1. The role of superplasticizer in a cement paste is to

  2. A.
    disperse the particles
    B.
    disperse the particles and to remove air bubbles
    C.
    disperse the particles, remove air bubbles and to retard setting
    D.
    retard setting

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  3. For stability analysis of slopes of purely cohesive soils, the critical centre is taken to lie at the intersection of

  4. A.
    the perpendicular bisector of the slope and the locus of the centre
    B.
    the perpendicular drawn at one-third slope from the toe and the locus of the centre
    C.
    the perpendicular drawn at two-third slope from the toe and the locus of the centre
    D.
    directional angles

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  5. A prismatic bar of uniform cross-sectional area of 5 cm2 is subjected to axial loads as shown in the given figure. Portion BC is subjected to an axial stress of

  6. A.
    400 kg/cm2 tansion,
    B.
    2000 kg/m2 compression
    C.
    1000 kg/cm2 tension
    D.
    600 kg/cm2 tension

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  7. Which one of the following methods would give accurate results in determining the direction of the observer's meridian ?

  8. A.
    Observation of circumpolar stars on the same vertical
    B.
    Observation of circumpolar stars at culmination
    C.
    Extra-meridian observation of a circumpolar star
    D.
    Observation of the sun at equal altitudes

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  9. In a truss work as shown in the figure given above, what is the force induced in the member DE ?

  10. A.
    50 kN (tensile)
    B.
    zero
    C.
    50 kN (compressive)
    D.
    25 kN (compressive)

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  11. The process by which a mass of saturated soil is caused by external forces to suddenly lose its shear strength and to behave as a fluid is called

  12. A.
    piping
    B.
    slide
    C.
    quick condition
    D.
    liquefaction

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  13. In steady laminar flow of a liquid through a circular pipe of internal diameter D, carrying a constant discharge, the hydraulic gradient is inversely proportional to

  14. A.
    D
    B.
    D2
    C.
    D4
    D.
    D5

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  15. A pipe line, 2000 m long, carries water. Velocity of propagation of pressure wave is 1000 m/s. If the valve at the low stream end is instantaneously closed at time, t = 0, negative water hammer pressure at the valve will last for

  16. A.
    0 - 4 S
    B.
    2 - 4 S
    C.
    4 - 8 S
    D.
    S - 12 S

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  17. Consider the following statements related to triaxial test :
    1. Failure occurs along pre-determined plane.
    2. Intermediate and minor principal stresses are equal.
    3. Volume changes can be measured.
    4. Field conditions can be simulated.
    Of these statements :

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

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  19. What is the magnitude of the force in the member BD in the figure given above ?

  20. A.
    5 kN
    B.
    7 kN (App)
    C.
    42kN
    D.
    Zero

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