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Civil Engineering :: GATE Exam Questions

  1. In a compaction test, as the compaction effort is increased, the optimum moisture content

  2. A.
    decreases
    B.
    remains same
    C.
    increases
    D.
    increases first and thereafter decreases

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  3. The peak discharge of the instantaneous unit hydrograph of a basin, when compared to the peak discharge of a 4-hour unit hydrograph of that basin, would be

  4. A.
    greater
    B.
    equal
    C.
    equal or lesser
    D.
    lesser

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  5. The drop manholes are provided in a sewerage system when there is

  6. A.
    change in alignment of sewer line
    B.
    change in size of sewers
    C.
    change in the elevation of ground level
    D.
    change from gravity system to pressure system

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  7. The reaction time for calculation of stopping distance may be assumed as

  8. A.
    5 secs
    B.
    2.5 secs
    C.
    0.5 secs
    D.
    10.0 secs

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  9. The percentage error in the computed discharge over a triangular notch corresponding to an error of 1% in the measurement of the head over the notch, would be

  10. A.
    1.0
    B.
    1.5
    C.
    2.0
    D.
    2.5

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  11. The characteristic strength of concrete is defined as that compressive strength below which not more than

  12. A.
    10% of results fall
    B.
    5% of results fall
    C.
    2% of results fall
    D.
    None of the above.

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  13. Un-factored maximum bending moments at a section of a reinforced concrete beam resulting from a frame analysis are 50, 80, 120 and 180 kNm under dead, live, wind and earthquake loads respectively. The design moment (kNm) as per IS: 456-2000 for the limit state of collapse (flexure) is

  14. A.
    195
    B.
    250
    C.
    345
    D.
    372

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  15. The microbial quality of treated piped water supplies is monitored by

  16. A.
    Microscopic examination
    B.
    Plate count of heterotrophic bacteria
    C.
    Coliform MPN test
    D.
    Identification of all pathogens

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  17. The 5-day BOD of a wastewater sample is obtained as 190 mg/l (with k = 0.01 h-1). The ultimate oxygen demand (mg/l) of the sample will be

  18. A.
    3800
    B.
    475
    C.
    271
    D.
    190

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  19. A tube well having a capacity of 4 m3/hour operates for 20 hours each day during the irrigation season. How much area can be commanded if the irrigation interval is 20 days and depth of irrigation is 7 cm ?

  20. A.
    1.71 x 104 m2
    B.
    1.14 x 104 m2
    C.
    22.9 x 104 m2
    D.
    2.29 x 104 m2

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