logo

CuriousTab

CuriousTab

Discussion

Home ‣ Civil Engineering ‣ Waste Water Engineering Comments
  • Question

  • The flow velocity in detritus tanks is


  • Options
  • A. 0.05 m/sec
  • B. 0.09 m/sec
  • C. 1.25 m/sec
  • D. none of these.

  • Correct Answer
  • 0.09 m/sec 

    • Waste Water Engineering problems

    Search Results

    • 1. Cement concrete sewers are only suitable if non-scouring velocity is between

    • Options
    • A. 2.5 to 3.0 m/sec
    • B. 3.0 to 4.0 m/sec
    • C. 3.5 to 4.5 m/sec
    • D. 4.5 to 5.5 m/sec.
      • Discuss
    • 2. Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is

    • Options
    • A. centrifugal pump
    • B. pneumatic ejector
    • C. reciprocating pump
    • D. none of these.
      • Discuss
    • 3. In Chezy's formula V = C rs for calculating the velocity of flow in circular sewer of diameter D running full, the value of hydraulic mean radius is

    • Options
    • A. D
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 4. Pick up the correct statement from the following :

    • Options
    • A. Rate of digestion of slugde is more at higher temperature
    • B. Thermophilic organisms digest the sludge if the temperature ranges from 40° to 60°C
    • C. Mesophilic organisms digest the sludge if the temperature is between 25° and 40°C
    • D. 90% of digestion takes place in 30 days at 29°C, the optimum mesophilic temperature
    • E. All the above.
      • Discuss
    • 5. For efficient working of a sewer, it must be ensured that

    • Options
    • A. minimum velocity of 0.45 m/sec, is maintained at its minimum flow
    • B. a maximum velocity of 0.90 m/sec, is maintained at its maximum flow
    • C. both (a) and (b)
    • D. neither (a) nor (b).
      • Discuss
    • 6. The Brake Horse power of the motor (efficiency 60%) required for a pump of capacity 0.075 cumec for a total lift of 12 m, is

    • Options
    • A. 10
    • B. 15
    • C. 20
    • D. 25
      • Discuss
    • 7. R.M.O. expenses include

    • Options
    • A. running expenses
    • B. maintenance expenses
    • C. operation expenses
    • D. all the above.
      • Discuss
    • 8. If the flame of a miner's safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains

    • Options
    • A. Hydrogen sulphide
    • B. Carbon dioxide
    • C. Methane
    • D. Oxygen
    • E. None of these.
      • Discuss
    • 9. A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

    • Options
    • A. 2.30 m
    • B. 2.40 m
    • C. 2.45 m
    • D. 2.50 m.
      • Discuss
    • 10. The coagulant which is generally not used for treating the sewage, is

    • Options
    • A. alum
    • B. ferric chloride
    • C. ferric sulphate
    • D. chlorinated copperas.
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.