31. The water carried sewerage system removes
32. For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed
33. Rate of flow of sewage is generally assumed
34. House connections to the laterals is generally made by
35. The self-cleansing velocity of water flowing through pipe lines, is
36. Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?
37. The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is
38. For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is
39. If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is
40. For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is
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