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Civil Engineering :: GATE Exam Questions

  1. The span (s) to be loaded uniformly for maximum positive (upward) reaction at support P, as shown in the figure below, is (are)

  2. A.
    PQ only
    B.
    PQ and QR
    C.
    QR and RS
    D.
    PQ and RS

  3. Mechanical stabilization requires :

  4. A.
    mixing of two or more types of natural soils
    B.
    addition of chemicals to soils
    C.
    addition of lime to soils
    D.
    addition of cementing material to soils

  5. The disinfection efficiency of chlorine in water treatment

  6. A.
    is not dependent on pH value.
    B.
    is increased by increased pH values.
    C.
    remains constant at all pH values.
    D.
    is reduced by increased pH value.

  7. Chlorine is some times used in sewage treatment

  8. A.
    to avoid flocculation
    B.
    to increase biological activity of bacteria
    C.
    to avoid bulking of activated sludge
    D.
    to help in grease separation

  9. The deflection of a cantilever beam at free end b applied with a moment M at the same point is :

  10. A.
    M l2/EI
    B.
    M l2/2 EI
    C.
    M l2/3 EI
    D.
    M l2/4 EI

  11. A saturated clay stratum draining both at the top and bottom undergoes 50 percent consolidation in 16 years under an applied load. If an additional drainage layer were present at the middle of the clay stratum, 50 percent consolidation would occur in

  12. A.
    2 years
    B.
    4 years
    C.
    8 years
    D.
    16 years

  13. Water flows at a rate of 10 m3/s in a rectangular channel 3 m wide. The critical depth of flow is

  14. A.
    1.13 m
    B.
    2 m
    C.
    1.45 m
    D.
    1.04 m

  15. Coagulation-flocculation with alum is performed :

  16. A.
    immediately before chlorination
    B.
    immediately after chlorination
    C.
    after rapid sand filtration
    D.
    before rapid sand filtration

  17. Blue baby disease (methaemoglobinemia) in children is caused by the presence of excess

  18. A.
    Chorides
    B.
    Nitrates
    C.
    Fluoride
    D.
    Lead

  19. Breakpoint chlorination of water involves addition of chlorine in an amount sufficient to:

  20. A.
    react with any ammonia and readily oxidisable organic matter
    B.
    kill Giardia cysts
    C.
    react with inorganic matter
    D.
    reduce bacterial growth in filters