1. If sizes of the sewers are __________ choking problems are less.
a) Large
b) Small
c) Big
d) Minute
Explanation: Combined sewer systems consist of only one sewer to carry out both storm water and sanitary sewage. Hence the size of the sewers should be large. Large sewers are easy to clean and avoid choking problems.
2. Which of the following is a disadvantage with respect to the size of the sewers?
a) Cleaning
b) Choking problems
c) Handling and transportation
d) Economical
Explanation: As the combined systems consist of a single large sewer to carry both sanitary sewage and storm water, it is easy to clean and choking problems are avoided. As the size of the sewers is large, it becomes difficult to handle and transport the sewer pipes.
3. In which kind of cities are combined systems used?
a) Less population
b) High population
c) High residences
d) High storm
Explanation: If a city has less population, it consists of fewer residences and industries based on the city needs. Hence the quantity of sanitary sewage produced will also be less. It becomes uneconomical to lay separate sewers for both stormwater and sanitary sewage. Hence combined systems are preferred.
4. In partial systems, there is no over load on the treatment plants.
a) True
b) False
Explanation: In dry weather flow the stormwater is less or absent. During wet weather flow, the quantity of stormwater increases. As in partial systems, a part of stormwater is direct to sanitary sewers, the stormwater puts a load on treatment plants by increasing the quantity of water to be treated.
5. The treatment is costly in which of the following systems?
a) Combined
b) Separate
c) Direct
d) Partial
Explanation: Combined systems consist of both storm water and sanitary sewage. Hence it becomes costly for as the treatment for both are done. In separate systems, the required amount of treatment is done for stormwater and sanitary sewage separately.
6. The process that involves connecting pipelines and sewer appurtenances to transport waste to sewage treatment centres is called?
a) Connecting pipelines
b) Pipelines construction
c) Sewer construction
d) Sewage construction
Explanation: Sewers are the pipelines to carry sanitary sewage and storm water to treatment plants or centres. The process of connecting pipelines and sewer appurtenances to transport waste to sewage treatment plants is called sewage construction.
7. Pipeline networks are designed by engineers and installed by sewer contractors in accordance with federal and state regulations.
a) True
b) False
Explanation: To construct sewer systems certain rules and regulations have to be followed based on the quality of pipes chosen, alignment and so on. Pipeline networks are designed by engineers based on city and installed by sewer contractors.
8. Sewer systems can also be referred as _________
a) Sewage
b) Sewerage
c) Storm
d) Wastewater
Explanation: Sewer systems are also referred to as sewerage and can be comprised of storm sewers, sanitary sewers, or a combination of both. Sewerage starts at the building’s drainage system and is transported through sewer pipeline until it reaches a sewage treatment plant.
9. On which of the factors mentioned below, the type of the sewer installed does not depend on?
a) Usage pattern
b) Terrain
c) location
d) storm water
Explanation: Storm water does not act as a distinctive factor for the installation of sewer systems. The type of sewer installed depends upon the terrain, where it is placed and the uses. Sanitary sewers are the most common type of system used to transport wastewater and industrial waste.
10. __________ is required to transport storm water runoff from roofs, parking lots, streets, and highways to a point of discharge.
a) Sanitary sewers
b) Storm sewers
c) Wastewater sewers
d) Water sewers
Explanation: There are different types of sewers used based on a type of flow it is designed to carry. Storm sewers are required to transport storm water runoff from roofs, parking lots, streets, and highways to a point of discharge. Storm drainage system helps to minimize flooding and soil erosion.