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Civil Engineering :: UPSC Civil Service Exam Questions

  1. A soil has a bulk density of 1.80 g/cm3 at water content of 5%. If the void ratio remains constant, then its bulk density for a water content of 10% will be

  2. A.
    1.88 g/cm3
    B.
    1.80 g/cm3
    C.
    1.98 g/cm3
    D.
    1.70 g/cm3

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  3. The base width of a soil gravity dam is 25 m. The material of the dam has a specific gravity of 2.56 and the dam is designed as an elementary profile ignoring uplift. What is the approximate allowable height of the dam ?

  4. A.
    64 m
    B.
    40 m
    C.
    164 m
    D.
    80 m

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  5. In a gusseted base, when the end of the column is machined smooth for complete bearing, the axial load is transferred to base slab :

  6. A.
    Fully through fastening
    B.
    Fully by direct bearing
    C.
    50 % by direct bearing and 50% through fastening
    D.
    60 % by direct bearing and 40% through fastening

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  7. Which of the following assumptions are made in the analysis of jet impinging normally on a moving plate?
    1. Friction between jet and plate is neglected
    2. Flow is steady
    3. Momentum of jet is unchanged
    4. Plate moves at a constant velocity
    Choose the correct answer using the codes given below :

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

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  9. A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.
    The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be

  10. A.
    1 : 27381
    B.
    1 : 25008
    C.
    1 : 20606
    D.
    1 : 30421

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  11. While driving a large number of piles in loose sand :

  12. A.
    It is advantageous to follow a sequence of pile driving such that the inner piles are driven first and then proceed outwards
    B.
    It is advantageous to follow a sequence of pile driving such that the piles near the periphery are driven first and inner piles are driven later
    C.
    It is advantageous to follow a sequence of pile driving such that alternately inner and outer piles are driven
    D.
    Driving of piles can be done in any random order

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  13. Surface tension of water when in contact with air is 0.0737 N/m. The difference of pressure between the inside and outside of a droplet of rain water 1 mm in diameter is nearly equal to

  14. A.
    0.15 kN/m2
    B.
    0.20 kN/m2
    C.
    0.25 kN/m2
    D.
    0.30 kN/m2

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  15. The upstream slope of an earth dam under steady seepage condition is

  16. A.
    equipotential line
    B.
    phreaticline
    C.
    flow-line
    D.
    seepage line

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  17. What are the magnitudes of horizontal and vertical support reactions, respectively at support. A of the frame shown in figure below ?

  18. A.
    16 kN, 18 kN
    B.
    16 kN, 6 kN
    C.
    6 kN, 16 kN
    D.
    8 kN, 6 kN

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  19. Consider the following statements :
    Shrinkage of concrete depends upon the
    1. relative humidity of the atmosphere.
    2. passage of time.
    3. applied stress.
    Which of these statements is/are correct ?

  20. A.
    1 and 2
    B.
    2 and 3
    C.
    1 alone
    D.
    1, 2 and 3

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