Waste water engineering

2. When drainage to sewage ratio is 20, the peak dry weather flow is A. 20% of the design discharge B. Slightly less than 5% of the design discharge C. Slightly more than 5% of the design discharge D. None of these

20% of the design discharge
Slightly less than 5% of the design discharge
Slightly more than 5% of the design discharge
None of these

Detailed SolutionWhen drainage to sewage ratio is 20, the peak dry weather flow is A. 20% of the design discharge B. Slightly less than 5% of the design discharge C. Slightly more than 5% of the design discharge D. None of these

4. If q is the average sewage flow from a city of population P, the maximum sewage flow A. $${\text{Q}} = \left( {\frac{{4 + \sqrt {\text{P}} }}{{18 + \sqrt {\text{P}} }}} \right){\text{q}}$$ B. $${\text{Q}} = \left( {\frac{{18 + {\text{P}}}}{{4 + \sqrt {\text{P}} }}} \right){\text{q}}$$ C. $${\text{Q}} = \left( {\frac{{18 + \sqrt {\text{P}} }}{{4 + \sqrt {\text{P}} }}} \right){\text{q}}$$ D. $${\text{Q}} = \left( {\frac{{5 + \sqrt {\text{P}} }}{{15 + \sqrt {\text{P}} }}} \right){\text{q}}$$

$${ ext{Q}} = left( {rac{{4 + sqrt { ext{P}} }}{{18 + sqrt { ext{P}} }}} ight){ ext{q}}$$
$${ ext{Q}} = left( {rac{{18 + { ext{P}}}}{{4 + sqrt { ext{P}} }}} ight){ ext{q}}$$
$${ ext{Q}} = left( {rac{{18 + sqrt { ext{P}} }}{{4 + sqrt { ext{P}} }}} ight){ ext{q}}$$
$${ ext{Q}} = left( {rac{{5 + sqrt { ext{P}} }}{{15 + sqrt { ext{P}} }}} ight){ ext{q}}$$

Detailed SolutionIf q is the average sewage flow from a city of population P, the maximum sewage flow A. $${\text{Q}} = \left( {\frac{{4 + \sqrt {\text{P}} }}{{18 + \sqrt {\text{P}} }}} \right){\text{q}}$$ B. $${\text{Q}} = \left( {\frac{{18 + {\text{P}}}}{{4 + \sqrt {\text{P}} }}} \right){\text{q}}$$ C. $${\text{Q}} = \left( {\frac{{18 + \sqrt {\text{P}} }}{{4 + \sqrt {\text{P}} }}} \right){\text{q}}$$ D. $${\text{Q}} = \left( {\frac{{5 + \sqrt {\text{P}} }}{{15 + \sqrt {\text{P}} }}} \right){\text{q}}$$

7. Pick up the correct statement from the following: A. The boning rod is used for checking the levels of the sewer inverts B. Manhole covers are made circular for the convenience of the cleaning staff C. A manhole is classified as shallow manhole if its depth is less than 0.9 m D. All the above

The boning rod is used for checking the levels of the sewer inverts
Manhole covers are made circular for the convenience of the cleaning staff
A manhole is classified as shallow manhole if its depth is less than 0.9 m
All the above

Detailed SolutionPick up the correct statement from the following: A. The boning rod is used for checking the levels of the sewer inverts B. Manhole covers are made circular for the convenience of the cleaning staff C. A manhole is classified as shallow manhole if its depth is less than 0.9 m D. All the above

8. Pick up the correct statement from the following: A. The circular section of sewers provides maximum hydraulic mean depth B. The circular sewers are provided for separate sewerage system C. The circular sewers work efficiently if the sections run at least half full D. All the above

The circular section of sewers provides maximum hydraulic mean depth
The circular sewers are provided for separate sewerage system
The circular sewers work efficiently if the sections run at least half full
All the above

Detailed SolutionPick up the correct statement from the following: A. The circular section of sewers provides maximum hydraulic mean depth B. The circular sewers are provided for separate sewerage system C. The circular sewers work efficiently if the sections run at least half full D. All the above

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