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- Question
The normal values of over flow rates for sedimentation tanks using coagulent, ranges between
Options- A. 25, 000 to 35, 000 litres/sqm/day
- B. 40, 000 to 50, 000 litres/sqm/day
- C. 50, 000 to 60, 000 litres/sqm/day
- D. 80, 000 to 100, 000 litres/sqm/day
- E. none of these.
- Correct Answer
- 50, 000 to 60, 000 litres/sqm/day
- 1. The sewage treatment units in which anaerobic decomposition of organic matter is used, are called
Options- A. imhoff tanks
- B. trickling filters
- C. sludge sedimentation tanks
- D. none of these. Discuss
- 2. In a sludge tank, the gas mainly produced, is
Options- A. Oxygen
- B. Nitrogen
- C. Hydrogen
- D. Carbon dioxide
- E. Methane. Discuss
- 3. The most efficient cross-section of sewers in a combined sewerage system is
Options- A. parabolic
- B. circular
- C. rectangular
- D. new egged. Discuss
- 4. The disintegrating pump in which solid matter is broken up before passing out, is
Options- A. centrifugal pump
- B. reciprocating pump
- C. pneumatic ejector
- D. none of these. Discuss
- 5. 1000 kg of sewage contains
Options- A. 0.112 kg in suspension
- B. 0.112 kg in solution
- C. 0.225 kg in solution
- D. 0.450 kg in suspension
- E. both (a) and (c) of above. Discuss
- 6. To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is
Options- A. 0.107 L
- B. 0.207 L
- C. 0.307 L
- D. 0.407 L Discuss
- 7. The depth of the centre of gravity (y) of the resultant compressive stress from the compression edge of the T-beam specified in Q. 13.52 is given by
Options- A.
- B.
- C.
- D.
Discuss
- 8. If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than
Options- A. 4 mm
- B. 5 mm
- C. 6 mm
- D. 8 mm
- E. 10 mm Discuss
- 9. Distribution of shear intensity over a rectangular section of a beam, follows :
Options- A. a circular curve
- B. a straight line
- C. a parabolic curve
- D. an elliptical curve
- E. none of these. Discuss
- 10. An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is
Options- A. 8.3 kg/cm2
- B. 7.6 kg/cm2
- C. 21.5 kg/cm2
- D. 11.4 kg/cm2 Discuss
Waste Water Engineering problems
Search Results
Correct Answer: trickling filters
Correct Answer: Methane.
Correct Answer: circular
Correct Answer: centrifugal pump
Correct Answer: both (a) and (c) of above.
Correct Answer: 0.207 L
Correct Answer:
Correct Answer: 5 mm
Correct Answer: a parabolic curve
Correct Answer: 8.3 kg/cm2
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