Discussion
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- Question
For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed
Options- A. 1.5
- B. 2.0
- C. 2.5
- D. 3.0
- Correct Answer
- 2.0
- 1. Pick up the correct statement from the following :
Options- A. The ratio of the quantity of the diluting water to that of the sewage, is known as dilution factor
- B. The automatic purification of polluted water, is known self purification phenomenon
- C. The photosynthesis is carried out in the presence of sun light
- D. Grab sample is generally obtained from the surface where turbulence mixes the sewage particles
- E. All the above. Discuss
- 2. The design period of sewage treatment works in normally
Options- A. 5 - 10 years
- B. 15 - 20 years
- C. 30 - 40 years
- D. 40 - 50 years. Discuss
- 3. Lead caulked joints are used for laying
Options- A. stone ware pipes
- B. earthern ware pipes
- C. C.I. pipes
- D. G.I. pipes. Discuss
- 4. The maximum diameter of sewers adopted in the designs is
Options- A. 1.0 m
- B. 2.0 m
- C. 3.0 m
- D. 4.0 m. Discuss
- 5. Dried sewage after treatment is used as
Options- A. fertilizer
- B. building material
- C. chemical for lowering B.O.D.
- D. base material for paints. Discuss
- 6. If D is the diameter of upper circular portion, the area of cross-section of a standard egg shaped sewer, is
Options- A.
- B.
- C.
- D.
Discuss
- 7. The sewer which received discharge from two or more main sewers, is known as
Options- A. a trunk sewer
- B. an outfall sewer
- C. a main sewer
- D. an intercepting sewer. Discuss
- 8. The stone ware sewers
Options- A. are used for carrying sewage and drainage from houses
- B. are manufactured from clays and shales
- C. after casting are dried and burnt at temperature 150°C, 700°C and 1200°C
- D. are generally provided with a water proof cover by vaporising sodium chloride
- E. all the above. Discuss
- 9. If D is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is
Options- A. 1.250 D
- B. 1.350 D
- C. 1.425 D
- D. 1.625 D. Discuss
- 10. If the grit in grit chambers is 4.5 million litres per day, its cleaning is done
Options- A. manually
- B. mechanically
- C. hydraulically
- D. electrically. Discuss
Waste Water Engineering problems
Search Results
Correct Answer: All the above.
Correct Answer: 15 - 20 years
Correct Answer: earthern ware pipes
Correct Answer: 3.0 m
Correct Answer: fertilizer
Correct Answer:
Correct Answer: a trunk sewer
Correct Answer: all the above.
Correct Answer: 1.625 D.
Correct Answer: manually
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