Types of Drainage Systems: Comprehensive Quiz for Plumbing Theory

Question 1

What is the primary purpose of a sanitary drainage system?

Accepted Answer

To remove wastewater from buildings

Answer

To collect and convey stormwater runoff

Answer

To prevent flooding in low-lying areas

Answer

To provide a means of irrigation

Question 2

Which type of drain fitting is used to change the direction of a drain line at a 90-degree angle?

Accepted Answer

Elbow

Answer

Tee

Answer

Cross

Answer

Trap

Question 3

Which material is commonly used for storm drains due to its durability and resistance to corrosion?

Accepted Answer

Cast iron

Answer

PVC

Answer

Copper

Answer

Galvanized steel

Question 4

Which of the following is NOT a benefit of a combined drainage system?

Accepted Answer

Improved water quality

Answer

Reduced infrastructure costs

Answer

Reduced flooding

Answer

Simplified maintenance

Question 5

Which of the following is NOT a type of drainage system commonly used in buildings?

Accepted Answer

Fire sprinkler system

Answer

Sanitary drainage

Answer

Storm drainage

Answer

Combined drainage

Question 6

What is the primary purpose of a storm drainage system?

Accepted Answer

To collect and discharge excess rainwater

Answer

To remove wastewater from buildings

Answer

To provide a path for electrical wiring

Answer

To control humidity levels

Question 7

What type of drainage system combines both sanitary and storm drainage?

Accepted Answer

Combined drain

Answer

Gravity drain

Answer

Dual drain

Answer

Interceptor drain

Question 8

Which of the following materials is commonly used for sanitary drainage pipes in residential buildings?

Accepted Answer

Polyvinyl chloride (PVC)

Answer

Cast iron

Answer

Copper

Answer

Stainless steel

Question 9

What is the primary purpose of a grease trap in a commercial kitchen?

Accepted Answer

To prevent grease and oil from entering the sewer system

Answer

To remove unpleasant odors from the kitchen

Answer

To enhance water flow in the drain line

Answer

To prevent corrosion of pipes

Question 10

What is the best way to maintain a drainage system and prevent problems?

Accepted Answer

Regular cleaning and inspection

Answer

Using chemical drain cleaners regularly

Answer

Ignoring it until a problem occurs

Answer

Flushing it with hot water only

Question 11

Which type of drainage system is intended to collect and remove waste materials from plumbing fixtures, such as sinks, toilets, and showers?

Accepted Answer

Sanitary drainage system

Answer

Storm drainage system

Answer

Combined drainage system

Question 12

What is the most commonly used material for constructing sanitary drainage pipes?

Accepted Answer

Polyvinyl chloride (PVC)

Answer

Cast iron

Answer

Copper

Question 13

Which type of drainage fixture is specifically designed to receive and discharge wastewater from bathtubs?

Accepted Answer

Bathtub drain

Answer

Sink

Answer

Toilet

Question 14

Which type of drainage system is designed to collect and remove rainwater from roofs, gutters, and other outdoor areas?

Accepted Answer

Storm drainage system

Answer

Sanitary drainage system

Answer

Combined drainage system

Question 15

Which type of drainage system combines sanitary wastewater and rainwater into a single system?

Accepted Answer

Combined drainage system

Answer

Sanitary drainage system

Answer

Storm drainage system

Question 16

What is the main difference between sanitary and storm drainage systems?

Accepted Answer

Sanitary systems handle wastewater, while storm systems handle rainwater runoff.

Answer

Sanitary systems are typically larger in diameter than storm systems.

Answer

Sanitary systems are always underground, while storm systems are not.

Answer

Sanitary systems need regular maintenance, but storm systems do not.

Question 17

What is the main environmental concern related to drainage systems? Explain how to reduce its impact.

Accepted Answer

Water pollution from sewage overflow

Answer

Air pollution from methane emissions

Answer

Soil erosion from surface runoff

Answer

Deforestation from land clearing

Question 18

In modern plumbing, which material is no longer recommended due to health concerns?

Accepted Answer

Lead

Answer

Cast iron

Answer

Polyethylene

Answer

Stainless steel

Question 19

Which type of drainage system is specifically designed to handle wastewater from sinks, toilets, and other bathroom fixtures?

Accepted Answer

Sanitary Drainage

Answer

Storm Drainage

Answer

Combined System

Answer

Septic System

Question 20

What is the primary function of a storm drain?

Accepted Answer

To collect and channel rainwater and snowmelt runoff away from buildings and roads.

Answer

To transport wastewater from fixtures to the sewer system.

Answer

To provide a pathway for rainwater to infiltrate the soil.

Answer

To filter debris from rainwater before it enters the ground.

Question 21

Which type of drainage system combines both sanitary and storm wastewater into a single system?

Accepted Answer

Combined System

Answer

Separate System

Answer

Storm Drainage

Answer

Sanitary Drainage

Question 22

What type of pipe fitting is used to change the direction of a drainage pipe by 90 degrees?

Accepted Answer

Elbow

Answer

Cross

Answer

Reducer

Answer

Tee

Question 23

What is the main purpose of a trap in a drainage system?

Accepted Answer

To prevent sewer gases from backing up into the building.

Answer

To filter debris from the wastewater.

Answer

To provide access for cleaning the drainage pipe.

Answer

To increase the flow rate of wastewater.

Question 24

Which type of pipe is used to connect plumbing fixtures like sinks and toilets to the main drainage system?

Accepted Answer

Waste pipe

Answer

Soil pipe

Answer

Leader pipe

Answer

Vent pipe

Question 25

What is the primary function of a vent pipe in a drainage system?

Accepted Answer

To allow air to enter the system, preventing negative pressure and ensuring proper drainage.

Answer

To provide access for cleaning the drainage system.

Answer

To remove wastewater from fixtures.

Question 26

What is a common problem that can occur in sanitary drainage systems, potentially causing backups and odors?

Accepted Answer

Clogs

Answer

Leaks

Answer

Flooding

Answer

Corrosion