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Civil Engineering :: UPSC Civil Service Exam Questions

  1. A circular sewer of diameter 1 m carries storm water to a depth of 0.75 m. The hydraulic radius is approximately

  2. A.
    0.3 m
    B.
    0.4 m
    C.
    0.5 m
    D.
    0.6 m

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  3. If the staff intercept on a staff located at 100 m from the level for five division deviation of the bubble is 0.050 m and if the length of one division of the bubble is 2 mm, then the radius of curvature of the bubble is 0.050 m and if the length of one division of the bubble is 2 mm, then the radius of curvature of the bubble tube is

  4. A.
    2.02 m
    B.
    2.20 m
    C.
    20.00 m
    D.
    20.20 m

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  5. If the magnitude of the resultant of two forces F and 2F acting at a point O is 50 N, and the included angle between F and 2F is 90°, then what is the magnitude of F ?

  6. A.
    F = 10 N
    B.
    F = 502 N
    C.
    F = 252 N
    D.
    F = 105 N

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  7. Consider the following assumptions in the analysis of a plane truss
    1. The individual members are straight.
    2. The individual members are connected by frictionless hinges.
    3. The loads and reactions act only at the joints.
    Of these assumptions :

  8. A.
    1 and 2 are valid
    B.
    1 and 3 are valid
    C.
    2 and 3 are valid
    D.
    1, 2 and 3 are valid

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  9. In a shear test on cohesionless soils, if the initial void ratio is less than the critical void ratio, the sample will :

  10. A.
    increase in volume
    B.
    initially increase in volume and then remain constant
    C.
    decrease in volume
    D.
    initially decrease and then increase in volume

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  11. Active earth pressure per metre length on the retaining wall with a smooth vertical back as shown in the given figure will be

  12. A.
    81 t
    B.
    27 t
    C.
    2 t
    D.
    1 t

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  13. Which of the following rules are used in choosing the repeating variables in dimensional analysis :
    1. Repeating variables should include the dependent variables
    2. Repeating variables should contain all primary units used in describing the variables in the problem
    3. Repeating variables should combine among themselves.
    4. Repeating variables should not contain the dependent variables.
    Select the correct answer using the codes given below :

  14. A.
    1 and 2
    B.
    2 and 3
    C.
    2 and 4
    D.
    3 and 4

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  15. The proportion of second moment of area about the centroidal axis to second moment of area about the base of a rectangle will be

  16. A.
    1/4
    B.
    1/2
    C.
    2
    D.
    3

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  17. Mean precipitation over an area is best obtained from gauged amounts by

  18. A.
    arithmetic mean method
    B.
    Thiessen method
    C.
    linearly interpolated isohyetal method
    D.
    orographically weighted isohyetal method

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  19. Loses deposits are formed by

  20. A.
    physical disintegration of rock
    B.
    constant blowing of wind from the same direction
    C.
    vertical deposition of glacial till
    D.
    chemical weathering of residual deposits.

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