Drainage System Maintenance and Repair: Online Learning Quizzes

Question 1

Which tool is specifically designed to remove blockages from drains?

Accepted Answer

Snake

Answer

Plunger

Answer

Wet/dry vacuum

Answer

Hydro-jetter

Question 2

What is the primary purpose of a catch basin in a drainage system?

Accepted Answer

Remove debris from stormwater runoff

Answer

Collect rainwater to prevent flooding

Answer

Store excess water for later use

Answer

Provide access to underground utilities

Question 3

What is the purpose of a vent stack in a drainage system?

Accepted Answer

Provide air circulation to prevent traps from siphoning

Answer

Connect multiple fixtures to a single drain line

Answer

Facilitate drain cleaning

Answer

Allow access to underground utilities

Question 4

What is the primary function of a backflow preventer?

Accepted Answer

Prevent contaminated water from entering the potable water supply

Answer

Regulate water flow in a drainage system

Answer

Protect against flooding

Answer

Provide access to underground utilities

Question 5

For optimal removal of grease and scale buildup in drainage pipes, which method is most effective?

Accepted Answer

Hydro-jetting with high-pressure water

Answer

Manual scrubbing with a wire brush

Answer

Chemical cleaning with drain cleaner

Answer

Vacuuming with a wet/dry vacuum cleaner

Question 6

Which tool, commonly used in plumbing, is designed to clear obstructions and clogs in drainage pipes?

Accepted Answer

Drain snake

Answer

Plunger

Answer

Shop vacuum

Answer

Hydro jet

Question 7

In a drainage system, what is the primary purpose of a catch basin?

Accepted Answer

To collect and retain sediment, debris, and other particles

Answer

To discharge excess water into the sewer system

Answer

To provide access for inspection and cleaning

Answer

To regulate the flow of water

Question 8

When using a drain snake to clear a clog, what is the recommended technique to maximize effectiveness?

Accepted Answer

Insert the snake into the drain and rotate it while gently pushing

Answer

Insert the snake into the drain and steadily push it through

Answer

Insert the snake into the drain and pull it back and forth repeatedly

Answer

Insert the snake into the drain and shake it vigorously

Question 9

In a drainage system, what is the primary function of a catch basin?

Accepted Answer

To collect and trap sediment and debris, preventing them from entering the main drainage lines

Answer

To pump wastewater uphill

Answer

To control the flow of stormwater

Answer

To provide access to underground pipes for inspection and maintenance

Question 10

Which type of pipe material is commonly used for underground drainage due to its durability and corrosion resistance, making it suitable for long-term use in harsh conditions?

Accepted Answer

Cast iron

Answer

PVC

Answer

Copper

Answer

Galvanized steel

Question 11

Which tool is commonly used to inspect the interior of pipes for blockages, cracks, or other damage, providing valuable information for making informed maintenance decisions?

Accepted Answer

Pipe inspection camera

Answer

Pressure gauge

Answer

Smoke test kit

Answer

Hydrostatic testing device

Question 12

In a drainage system, what is the purpose of a clean-out?

Accepted Answer

To provide access for removing debris and blockages, facilitating maintenance and preventing clogs

Answer

To control the direction of water flow

Answer

To provide access for camera inspection of pipes

Answer

To reduce pressure in the system

Question 13

What is the primary function of a trap in a drainage system?

Accepted Answer

To create a water seal that prevents sewer gases from entering the building.

Answer

To prevent backflow of sewage into the building.

Answer

To collect and filter debris before it enters the main sewer line.

Answer

To regulate the flow of water through the drainpipe.

Question 14

Which type of fitting is used to change the direction of a drainpipe?

Accepted Answer

Elbow

Answer

Reducer

Answer

Coupling

Answer

Tee

Question 15

What is the main difference between a sanitary sewer system and a storm drain system?

Accepted Answer

Sanitary sewers carry wastewater from homes and businesses, while storm drains carry rainwater runoff.

Answer

There is no significant difference between the two systems.

Answer

Storm drains carry wastewater, while sanitary sewers carry rainwater runoff.

Answer

Both systems carry both wastewater and rainwater runoff.

Question 16

Which tool is most commonly used to remove clogs from a drainpipe?

Accepted Answer

Drain snake

Answer

Pipe wrench

Answer

Hacksaw

Answer

Channel lock pliers

Question 17

What is the most effective way to prevent sewer odors from entering a house?

Accepted Answer

Ensuring proper venting of the sewer system.

Answer

Using strong air fresheners.

Answer

Sealing all cracks in the foundation.

Answer

Installing a sump pump.

Question 18

When inspecting a catch basin, what should be checked for first?

Accepted Answer

Blockages and debris buildup.

Answer

Corrosion on the metal parts.

Answer

Cracks in the concrete structure.

Question 19

How often is it generally recommended to clean a residential drain system?

Accepted Answer

At least once a year

Answer

Every three years

Answer

Only when there are visible blockages.

Answer

Every six months

Question 20

A common cause of slow draining in a shower is:

Accepted Answer

Hair and soap buildup in the drain.

Answer

A leak in the showerhead.

Answer

Low water pressure in the house.

Answer

A cracked pipe in the wall.

Question 21

What is the first step before attempting to repair a drainpipe?

Accepted Answer

Shut off the water supply to the affected area.

Answer

Locate the source of the leak.

Answer

Remove the drain cover.

Answer

Gather the necessary tools and materials.

Question 22

Which type of sealant is best for repairing cracks in a concrete catch basin?

Accepted Answer

Epoxy sealant

Answer

Silicone sealant

Answer

Acrylic sealant

Answer

Caulk

Question 23

How can you prevent clogs in a kitchen sink drain?

Accepted Answer

Use a strainer to catch food particles.

Answer

Flush the drain with a garden hose.

Answer

Pour boiling water down the drain regularly.

Answer

Use chemical drain cleaners frequently.

Question 24

When replacing a section of drainpipe, what is the most important consideration for joining the new pipe to the existing pipe?

Accepted Answer

Ensuring a tight and leak-proof seal.

Answer

Matching the exact pipe diameter.

Answer

Using the correct type of glue or solvent.

Answer

Keeping the pipe joints aligned.