A. Velocity at dry weather flow
B. Velocity of water at flushing
C. Velocity at which no accumulation remains in the drains
D. Velocity of water in a pressure filter
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Related Mcqs:
- If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is__________________?
- A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these...
- The self-cleansing velocity of water flowing through pipe lines, is___________________ ?
- A. 2 metres/sec B. 1 metre/sec C. 0.5 metre/sec D. 0.25 metre/sec...
- With self cleansing velocity in sewers___________________?
- A. Silting occurs at bottom B. Scouring occurs at bottom C. Both silting and scouring occur at bottom D. Neither silting nor scouring occurs at bottom...
- If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is___________________?
- A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these...
- Assertion A.: The minimum self cleansing velocity in the sewer, at least once a day, must be generated. Reason (R): If certain deposition takes place and is not removed, it obstructs free flow and causes further deposition leading to complete blocking of the sewer?
- A. Both A and R are true and R is the correct explanation of A B. Both A and R are true but R is not a correct explanation of A C. A is true but R is false D. A is false but R is true...
- If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is________________?
- A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these...
- In sewers designed with self cleansing velocity________________?
- A. The bottom is silted B. The bottom is scoured C. Both silting and scouring occur at the bottom D. Neither silting nor scouring occurs at the bottom...
- To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is_________________?
- A. 0.50 m/sec B. 0.60 m/sec C. 0.70 m/sec D. 0.75 m/sec...
- The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is__________________?
- A. Vs = 418 (Gs – Gw) d [(3T + 70)/100] B. Vs = 418 (Gs – Gw)d² [(3T + 70)/100] C. Vs = 218 (Gs – Gw)d² [(3T + 70)/100] D. Vs = 218 (Gs – Gw)d [(3T + 70)/100]...
- 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__________________?
- A. 16 m B. 20 m C. 24 m D. 30 m...
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