logo

CuriousTab

CuriousTab

Discussion


Home Civil Engineering Water Supply Engineering Comments

  • Question
  • Perched acquifers generally occur


  • Options
  • A. below water table
  • B. above water table
  • C. in acquicludes
  • D. in artesian acquifers
  • E. none of these.

  • Correct Answer
  • above water table 


  • Water Supply Engineering problems


    Search Results


    • 1. Silt storage is the same as

    • Options
    • A. dead storage
    • B. live storage
    • C. effective storage
    • D. none of these.
    • Discuss
    • 2. Pick up the correct statement from the following :

    • Options
    • A. The volume of underground water extracted by gravity drainage from a saturated soil, is known as yield
    • B. The ratio of volume drained to the total volume of material drained, is known as specific yield
    • C. The volume of water retained by the soil against the pull of gravity, is called specific retention or field capacity
    • D. The sum of specific yield and specific retention, is equal to porosity
    • E. All the above.
    • Discuss
    • 3. Capacity of soil to absorb moisture, is generally known as

    • Options
    • A. permeability
    • B. porosity
    • C. infiltration capacity
    • D. perviousness.
    • Discuss
    • 4. For complete stabilisation of organic matter in polluted water, it takes

    • Options
    • A. 5 days
    • B. 10 days
    • C. 20 days
    • D. 30 days
    • E. 40 days.
    • Discuss
    • 5. Suction lift of a pump depends upon

    • Options
    • A. atmospheric pressure
    • B. water temperature
    • C. velocity of water in suction pipe
    • D. frictional losses
    • E. all the above.
    • Discuss
    • 6. Pick up the incorrect statement from the following :

    • Options
    • A. The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in water
    • B. Higher value of pH means lower hydrogen ion concentration
    • C. Lower value of pH means higher hydrogen ion contraction
    • D. Lower value of pH gives alkaline solution
    • E. None of these.
    • Discuss
    • 7. The factor for the selection of pumping station site, is

    • Options
    • A. distance of the source of contamination or pollution
    • B. height above the H.F.L. of the river
    • C. future expansion
    • D. proximity of the site from the railway station
    • E. all the above.
    • Discuss
    • 8. A pressure conduit carrying water beneath a stream or a canal, is known as

    • Options
    • A. sag
    • B. depressed pipe
    • C. inverted syphon
    • D. all the above.
    • Discuss
    • 9. The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the riveted joints of the pipe as 0.6 and minimum cover 3 mm for corrosion, the thickness of the pipe materials, is

    • Options
    • A. 10 mm
    • B. 15 mm
    • C. 20 mm
    • D. 25 mm
    • E. 30 mm.
    • Discuss
    • 10. Rolled steel Tee-sections are used

    • Options
    • A. as columns
    • B. with flat strips to connect plates in steel rectangular tanks
    • C. as built up sections to resist axial tension
    • D. none of these.
    • Discuss


    Comments

    There are no comments.

Enter a new Comment