Discussion
Home ‣ Civil Engineering ‣ Waste Water Engineering Comments
- Question
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.
- Correct Answer
-
- 1. 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
- 2. 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
- 3. The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is
Options- A. 1.5
- B. 2.0
- C. 3.0
- D. 4.0 Discuss
- 4. In normal conditions, the period for sludge digestion, is
Options- A. 10 days
- B. 20 days
- C. 30 days
- D. 60 days
- E. 90 days. Discuss
- 5. For drainage pipes in buildings the test applied before putting them to use, is
Options- A. water test
- B. smoke test
- C. straightness test
- D. all the above. Discuss
- 6. 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
- 7. 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
- 8. 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. Discuss
- 9. 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
- 10. R.M.O. expenses include
Options- A. running expenses
- B. maintenance expenses
- C. operation expenses
- D. all the above. Discuss
Waste Water Engineering problems
Search Results
Correct Answer: All the above.
Correct Answer: both (a) and (b)
Correct Answer: 1.5
Correct Answer: 30 days
Correct Answer: smoke test
Correct Answer: centrifugal pump
Correct Answer: 2.5 to 3.0 m/sec
Correct Answer: 0.09 m/sec
Correct Answer: 20
Correct Answer: all the above.
Comments
There are no comments.More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.