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Civil Engineering :: GATE Exam Questions

  1. At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :

  2. A.
    2.0
    B.
    1.63
    C.
    1.00
    D.
    0.61

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  3. As per IS : 800-1984 the minimum pitch of rivets in a row is recommended as the diameter of the rivet times

  4. A.
    2.0
    B.
    2.5
    C.
    3.0
    D.
    4.0

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  5. The ordinate of the Instantaneous Unit Hydrograph (IUH) of a catchment at any time t, is

  6. A.
    The slope of the 1-hour unit hydrograph at that time
    B.
    The slope of the direct runoff unit hydrograph at that time
    C.
    Difference in the slope of the S-curve and 1-hour unit hydrograph
    D.
    The slope of the S-curve with effective rainfall intensity of 1 cm/hr

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  7. Water emerges from an ogee spillway with velocity 13.72 m/s and depth = 3.0 m at its toe. The tail water depth required to form a hydraulic jump at the toe is

  8. A.
    6.48 m
    B.
    5.24 m
    C.
    3.24 m
    D.
    2.24 m

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  9. In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial dissolved oxygen (D.O) content of the diluted sample is 7.8 mg/l. After 5 days of incubation at 20°C, the D.O. content of the sample is reduced to 4.4 mg/l. The BOD of the waste water is :

  10. A.
    196 mg/l
    B.
    200 m/l
    C.
    204 mg/l
    D.
    208 mg/l

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  11. The lateral ties in a reinforced concrete rectangular column uncle: axial compression are used to :

  12. A.
    avoid the buckling of the longitudinal steel under compression
    B.
    provide adequate shear capacity
    C.
    provide adequate confinement to concrete
    D.
    reduce the axial deformation of the column

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  13. The specific gravity of paving bitumen as per IS:73-1992 lies between

  14. A.
    1.10 and 1.06
    B.
    1.06 and 1.02
    C.
    1.02 and 0.97
    D.
    0.97 and 0.92

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  15. A linear relationship is observed between speed and density on a certain section of a highway. The free flow speed is observed to be 80 km per hour and the jam density is estimated as 100 vehicles per km length. Based on the above relationship, the maximum flow expected on this section and the speed at the maximum flow will respectively be

  16. A.
    8000 vehicles per hour and 80 km per hour
    B.
    8000 vehicles per hour and 25 km per hour
    C.
    2000 vehicles per hour and 80 km per hour
    D.
    2000 vehicles per hour and 40 km per hour

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  17. The ratio of unconfined compressive strength of an undisturbed sample of soil to that of a remoulded sample, at the same water content, is known as :

  18. A.
    activity
    B.
    damping
    C.
    plasticity
    D.
    sensitivity

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  19. The modulus of rupture of concrete gives

  20. A.
    the direct tensile strength of the concrete
    B.
    the direct compressive strength of the concrete
    C.
    the tensile strength of the concrete under bending
    D.
    the characteristic strength of the concrete

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