NPTEL Wastewater Treatment and Recycling Week 2 Assignment Answers 2024
1. The factors considered for estimating the quantity of municipal wastewater generation from a city, include:
a. Per capita water consumption
b. Population of the city
c. Ratio of water usage to wastewater generation
d. All of these
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2. In additional to municipal wastewater, which of these are supposed to be carried by the
combined sewers:
- a. Stormwater runoff
- b. Industrial effluents
- c. Agricultural runoff
- d. All of these
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3.
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4. In India, nearly about___________ percentage of sewage generated remains untreated due to lack of sewage treatment facilities:
a. 90
b. 60
c. 30
d. 10
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5. Population carrying capacity limitation applies in population forecasting when using:
a. Growth Composition Analysis Method
b. Incremental Increase Method
c. Geometric Increase Method
d. Logistic Growth Method
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6. Master Plan Method for population forecasting is mostly suitable for:
a. Large and established cities.
b. Cities of moderate size and age
c. New cities being developed
d. Only small clusters
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7. As per CPHEEO, among the given commercial institutions, the expected generation of wastewater (per user) is lowest from:
a. Offices
b. Hospitals
c. Restaurant
d. Hostels
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8. The 1981, 1991, 2001, 2011, and 2021 census data for population of a city are 1.6 lakhs, 1.92 lakhs, 2.3 lakhs, 2.76 lakhs, and 3.29 lakhs, respectively. What is the average incremental increase in the population?
a. 5,000 / decade
b. 7,000 / decade
c. 28,400 / decade
d. 42.250 / decade
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9. Which of the following uses do not contribute sewage flow to sewer lines:
a. Infiltration from sewers
b. Water used from private water supplies
c. Water used for gardening and horticulture
d. All of these
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10. Identify the correct statements regarding peak factor considered for designing sewer systems:
Statement I: The peak factor is used to estimate maximum flow for sewer designs.
Statement II: Peak factor typically increased with the increase in population of the city.
a. Statement I is correct, while statement II is incorrect
b. Statement Il is correct, while statement I is incorrect
c. Both. statements I and Il are correct
d. Both, statements I and II are incorrect
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11. The forecasted population in 2050 using arithmetic increase method, would be (in Lakhs)
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12. The forecasted population in 2050 using geometric increase method, would be (in Lakhs)
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13. The forecasted population in 2050 using incremental increase method, would be (in Lakhs)
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14. The maximum daily flow of sewage from the city is:
a. 306 MLD
b. 459 MLD
c. 612 MLD
d. 918 MLD
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15. The peak hourly flow of the sewage from the city is:
a. 12750 m₴/h
b. 19125 m%/h
c. 25500 m/h
d. 38250 m₴/h
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