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Civil Engineering :: UPSC Civil Service Exam Questions

  1. The "Back sight" reading on a vertically held staff at a point A on the floor along the centre line of a railway tunnel is 3.465 m, and the "Fore sight" on the inverted staff held at the roof of the tunnel just vertically above A is 1.115 m. The height of the tunnel along the centre line at floor point A is

  2. A.
    2.310 m
    B.
    3.465 m
    C.
    4.620 m
    D.
    6.930 m

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  3. The tipping load of a crane refers to

  4. A.
    lifted weight together with all attached handling tackle and hoist rope, with grounded attached outriggers
    B.
    lifted weight together with all attached handling tackle but excluding hoist rope, with specifying the radius horizontally, with grounded outriggers
    C.
    lifted weight alone, with specifying the radius for the lifted weight and also for the counter weight without grounding the outriggers
    D.
    lifted weight alone, at specified horizontal radius without grounding the outriggers.

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  5. According to the theory of filtration in water treatment, which of the following mechanisms come into play when water is filtered through a filter bed ?
    1. Mechanical straining
    2. Capillary action
    3. Centrifugal force
    4. Electro kinetic phenomenon
    5. Osmotic force
    6. Bacteriological action
    Select the correct answer using the code given below :

  6. A.
    1, 2, 4 and 6
    B.
    2, 3 and 5
    C.
    3, 4, 5 and 6
    D.
    1, 3, 4 and 6

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  7. Consider the following statements :
    In the critical path method of construction planning free float can be
    1. greater than total float
    2. greater than independent float
    3. equal to total float
    4. less than independent float.
    Of these statements :

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

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  9. In a cantilever beam, the bending moment at any section of the beam is equal to the

  10. A.
    area of the shear force diagram between the free end of the beam and that section
    B.
    area of the bending force moment diagram between the free end of the beam and that section
    C.
    the area of shear force diagram between the fixed end of the beam and that section
    D.
    the vertical ordinate at that section in the shear force diagram

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  11. Which one of the following is the correct sound intensity expression with usual notations ?

  12. A.
    dB = 10 log10 (I/I0)2
    B.
    dB = 10 log10 (I/I0)
    C.
    dB = 10 log10 (I - I0)2
    D.
    dB = 10 log10 (I - I0)

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  13. A three-hinged parabolic arch rib with hinges at abutments and at crown is under the action of uniformly distributed load 'W' per unit length over its entire span 'l' through its crown. The bending moment at quarter span is

  14. A.
    zero
    B.
    Wl2/8
    C.
    Wl2/12
    D.
    Wl2/24

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  15. A bulldozer operates on a 30 m stretch and moves at 2.4 kmph when pushing the earth, and returns empty at 6 kmph. The time lost in loading and shifting gears per trip is 18 seconds. Its operating factor is nearly 50 min/hour. What is the number of trips made per hour ?

  16. A.
    31
    B.
    33
    C.
    35
    D.
    37

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  17. In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than M1 type, tensile stress in bending in the vertical direction may be allowed to the extent of

  18. A.
    0.4 kg/cm2
    B.
    0.7 kg/cm2
    C.
    1.0 kg/cm2
    D.
    1.2 kg/cm2

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  19. The 'Euler' load for a column is 1000 kN and crushing load is 1500 kN. The 'Rankine' load is equal to

  20. A.
    600 kN
    B.
    1000 kN
    C.
    1500 kN
    D.
    2500 kN

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