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Civil Engineering :: UPSC Civil Service Exam Questions

  1. In a circular sewer of diameter D, if the depth of flow is D/4, what is the wetted perimeter equal to ?

  2. A.
    πD/4
    B.
    πD/2
    C.
    πD/3
    D.
    D/3

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  3. The standard time meridian in India is 82°30'E. If the standard time at any instant is 20 hours 10 minutes, the local mean time for the place at a longitude of 20°E would be

  4. A.
    4h PM
    B.
    4h 10m PM
    C.
    lh 20m PM
    D.
    0h 20m AM

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  5. With a vertical point load on the surface when considering the vertical plane passing through the load, the stress gets reduced by 52.3% at a depth of

  6. A.
    0.25 of unit length
    B.
    0.5 of unit length
    C.
    0.75 of unit length
    D.
    1 of unit length

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  7. Consider the following statements
    The main reinforcement in the counterfort in a counterfort retaining wall of R.C.C is provided on the :
    1. inclined face in front of counterfort.
    2. bottom face in. back counterfort.
    3. inclined face in back counterfort.
    4. bottom face in front counterfort.
    Select the correct answer using the codes given below :

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

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  9. In a free vortex, velocity

  10. A.
    decreases with radius
    B.
    increases with radius
    C.
    is constant
    D.
    varies inversely as the square of the radius

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  11. In the schematic flownet shown in the given figure the hydraulic potential at point A is

  12. A.
    5 m of water
    B.
    12 m of water
    C.
    15 m of water
    D.
    25 m of water

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  13. A 4-hour rainfall in a catchment of 250 km2 produces rainfall depths of 6.2 cm and 5.0 cm in successive 2-hour unit periods. Assuming the φ index of the soil to be 1.2 cm/hour, the run-off volume in ha-m will be

  14. A.
    16
    B.
    22
    C.
    1600
    D.
    2200

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  15. Consider the following statements :
    The critical path in a network plan of a project
    1. helps in planning efficient time schedule
    2. indicates the shortest path in time
    3. helps in crashing the project judiciously
    4. helps in encouraging discipline in execution.
    Of these statements :

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

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  17. Which of the following pairs are correctly matched ?
    1. Alpha iron....non magnetic
    2. Beta iron....strongly magnetic
    3. Gamma iron....non-magnetic and capable of dissolving carbon.
    4. Delta iron....non-magnetic and absorbs very little carbon.
    Select the correct answer using the codes given below :

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

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  19. The height of a hydraulic jump in a stilling pool was found to be 10 cm in a model with lp/lm = 36. The prototype jump height would be

  20. A.
    0.6 m
    B.
    3.6 m
    C.
    21.6m
    D.
    indeterminable for want of adequate data

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