Discussion
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- Question
The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock's law, is
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. The grit and silt of the grit chambers, may not be used for
Options- A. raising low lying areas by dumping
- B. concreting
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
- 2. The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be
Options- A. 0.9 cm
- B. 1.2 m
- C. 1.5 m
- D. > 1.5 m. Discuss
- 3. For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of
Options- A. 100 cm
- B. 120 cm
- C. 140 cm
- D. 160 cm
- E. 180 cm. Discuss
- 4. Pick up the incorrect size of stone ware sewers
Options- A. 52.5 cm
- B. 67.5 cm
- C. 82.5 cm
- D. 90 cm
- E. none of these. Discuss
- 5. Pick up the correct statement from the following :
Options- A. the sewer pipes of sizes less than 0.4 m diameter are designed as running full at maximum discharge
- B. the sewer pipes of sizes greater than 0.4 m diameter are designed as running 2/3rd or 3/4th full at maximum discharge
- C. the minimum design velocity of sewer pipes is taken as 0.8 m/sec
- D. all the above. Discuss
- 6. In areas where light rains are uniformly distributed throughout the year, the type of sewerage system to be adopted is
Options- A. separate system
- B. combined system
- C. partially combined system
- D. none of these. Discuss
- 7. The intensity of rain is expressed in
Options- A. cm/minute
- B. cm/hour
- C. cm/day
- D. none of these. Discuss
- 8. The rate of accumulation of sludge per person per year, is
Options- A. 10 litres
- B. 15 litres
- C. 20 litres
- D. 25 litres
- E. 30 litres. Discuss
- 9. The formula
used for determining flow velocities in sewers, is known as
Options- A. Chezy's formula
- B. Bazin's formula
- C. Kutter's formula
- D. Manning's formula. Discuss
- 10. The most efficient cross section of sewers in a separate sewerage system is
Options- A. parabolic
- B. circular
- C. rectangular
- D. new egged. Discuss
Waste Water Engineering problems
Search Results
Correct Answer: concreting
Correct Answer: > 1.5 m.
Correct Answer: 160 cm
Correct Answer: none of these.
Correct Answer: all the above.
Correct Answer: combined system
Correct Answer: cm/hour
Correct Answer: 20 litres
Correct Answer: Manning's formula.
Correct Answer: circular
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