Types of Plumbing Systems: A Comprehensive Guide for Vocational Education

Question 1

Which component is essential for a drainage system in plumbing?

Accepted Answer

Vents

Answer

Supply lines

Answer

Gas lines

Answer

Faucets

Question 2

Which plumbing system supplies fuel gas to appliances and equipment?

Accepted Answer

Gas Piping System

Answer

Water Supply System

Answer

Drainage System

Answer

Electrical System

Question 3

Which of the following is NOT a type of water supply system?

Accepted Answer

Sprinkler system

Answer

Cistern water system

Answer

Well water system

Answer

Municipal water supply

Question 4

What type of drain is used to remove wastewater from sinks and bathtubs?

Accepted Answer

Sanitary drain

Answer

French drain

Answer

Area drain

Answer

Storm drain

Question 5

What is the purpose of a pressure reducing valve in a water supply system?

Accepted Answer

To reduce water pressure and prevent damage to fixtures

Answer

To increase water pressure and improve flow rate

Answer

To filter out impurities in the water supply

Question 6

What is the purpose of a backflow preventer in a plumbing system?

Accepted Answer

To prevent contaminated water from flowing back into the clean water supply

Answer

To filter out impurities in the water supply

Answer

To reduce water pressure and prevent leaks

Question 7

What is the function of a cleanout in a plumbing system?

Accepted Answer

To provide access for cleaning and maintenance

Answer

To prevent clogs and backups

Answer

To trap debris and prevent it from entering the drain line

Answer

To regulate water flow and pressure

Question 8

Which plumbing system type is responsible for transporting water from the main supply to fixtures and appliances?

Accepted Answer

Water Supply System

Answer

Drainage System

Answer

Gas Distribution System

Answer

Fire Suppression System

Question 9

The main purpose of a drainage system in plumbing is to:

Accepted Answer

Remove wastewater and prevent blockages

Answer

Provide protection from fire

Answer

Supply water to fixtures

Answer

Control gas flow

Question 10

In a gas distribution system, the component responsible for regulating gas flow is the:

Accepted Answer

Gas Regulator

Answer

Trap

Answer

Water Meter

Answer

Pressure Relief Valve

Question 11

The purpose of a water meter installed in a plumbing system is to:

Accepted Answer

Measure water consumption

Answer

Filter water

Answer

Control water pressure

Answer

Prevent backflow

Question 12

Which type of trap is commonly used in plumbing to prevent sewer gases from entering a building?

Accepted Answer

P-trap

Answer

S-trap

Answer

Cleanout

Answer

Floor drain

Question 13

The main function of a backflow preventer in a plumbing system is to:

Accepted Answer

Prevent contaminated water from flowing back into the clean water supply

Answer

Increase water pressure

Answer

Control water temperature

Question 14

Which type of pipe material is known for its durability, resistance to corrosion, and ability to withstand high temperatures?

Accepted Answer

Copper

Answer

PVC

Answer

Cast iron

Answer

PEX

Question 15

The primary purpose of a water pressure reducing valve is to:

Accepted Answer

Control water pressure and prevent damage to plumbing fixtures and appliances

Answer

Increase water pressure for higher flow rates

Answer

Control water temperature

Question 16

The process of joining pipes and fixtures to create a functional plumbing system is known as:

Accepted Answer

Pipe Fitting

Answer

Soldering

Answer

Welding

Answer

Plumbing Design

Question 17

In a plumbing system, which fixture is used to control the flow of water and adjust its temperature?

Accepted Answer

Faucet

Answer

Drain

Answer

Showerhead

Answer

Toilet

Question 18

What is the primary function of a P-trap in a sink drain?

Accepted Answer

To prevent sewer gases from entering the room

Answer

To collect debris and prevent clogs

Answer

To regulate the flow of water into the drain

Answer

To connect the drain to the main plumbing line

Question 19

Which material is primarily used for connecting pipes and fittings in water supply systems?

Accepted Answer

Solder

Answer

Tape

Answer

Caulk

Answer

Glue

Question 20

What is the primary purpose of a backflow preventer in a plumbing system?

Accepted Answer

To prevent contaminated water from flowing back into the clean water supply

Answer

To filter out impurities

Answer

To increase water pressure

Question 21

Which type of plumbing system is designed to distribute natural gas?

Accepted Answer

Black iron pipe

Answer

Copper pipe

Answer

ABS pipe

Answer

PVC pipe

Question 22

Which of the following can be a potential issue caused by frozen pipes?

Accepted Answer

Pipe bursts

Answer

Increased water pressure

Answer

Reduced water temperature

Answer

Improved water flow

Question 23

What is considered the recommended water pressure range for a residential plumbing system?

Accepted Answer

40-60 psi

Answer

20-30 psi

Answer

100-120 psi

Answer

70-90 psi

Question 24

Which tool is essential for cutting plumbing pipes?

Accepted Answer

Pipe cutter

Answer

Screwdriver

Answer

Pliers

Answer

Wrench

Question 25

Which piping material is specifically designed and approved for potable water applications due to its corrosion resistance and ability to inhibit bacterial growth?

Accepted Answer

Copper

Answer

ABS

Answer

PVC

Answer

Cast iron

Question 26

What is the primary function of a sanitary sewer system in the context of plumbing?

Accepted Answer

To collect and convey wastewater from buildings to a treatment facility

Answer

To manage stormwater runoff

Answer

To distribute natural gas for heating and cooking purposes

Answer

To provide potable water to buildings

Question 27

Which type of valve is commonly used in plumbing systems to regulate the flow of water by rotating a disk or ball within the valve body?

Accepted Answer

Gate valve

Answer

Check valve

Answer

Relief valve

Answer

Float valve

Question 28

Which type of gas is predominantly used in residential plumbing systems for cooking, heating, and water heating applications?

Accepted Answer

Natural gas

Answer

Butane

Answer

Carbon dioxide

Answer

Propane

Question 29

What is the primary purpose of a cleanout in a drainage system?

Accepted Answer

To provide an accessible point for inspecting, cleaning, and removing obstructions from the drainage system

Answer

To trap grease and prevent it from entering the drainage system

Answer

To prevent clogs from forming in the drainage system

Answer

To vent the drainage system and prevent the buildup of sewer gases

Question 30

Which material is commonly used for drain lines due to its durability, resistance to corrosion, and cost-effectiveness?

Accepted Answer

PVC

Answer

Cast iron

Answer

Copper

Answer

Galvanized steel

Question 31

What is the primary function of a water heater in a plumbing system?

Accepted Answer

To raise the temperature of water for domestic uses such as bathing, dishwashing, and laundry

Answer

To filter water and remove contaminants

Answer

To remove impurities and soften water

Answer

To store a reserve of water for use during periods of high demand

Question 32

Which type of fitting is used to connect two pipes of different diameters, allowing a gradual change in pipe size?

Accepted Answer

Reducer

Answer

Tee

Answer

Elbow

Answer

Coupling

Question 33

What is the main function of a p-trap in a plumbing system?

Accepted Answer

To create a water seal that prevents sewer gases from escaping into the building while allowing wastewater to drain

Answer

To vent the plumbing system and release trapped air

Answer

To trap and retain water to prevent clogs from forming

Answer

To regulate the water pressure in the plumbing system

Question 34

What type of plumbing system is responsible for delivering water to fixtures throughout a building?

Accepted Answer

Water supply system

Answer

Gas system

Answer

Drainage system

Question 35

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

Accepted Answer

To prevent sewer gases from entering the building

Answer

To collect and remove waste

Answer

To provide access for cleaning

Answer

To regulate water flow

Question 36

In a gas system, which type of valve is primarily used to control the flow of gas?

Accepted Answer

Ball valve

Answer

Globe valve

Answer

Gate valve

Answer

Check valve

Question 37

What is the main distinction between vented and unvented drainage systems?

Accepted Answer

Vented systems allow air to enter to prevent siphoning, while unvented systems do not.

Answer

Vented systems are exclusively used in commercial buildings, whereas unvented systems are used in residential buildings.

Answer

Vented systems are more costly to install than unvented systems.

Question 38

Which type of drainage pipe is specifically designed to carry wastewater from appliances like sinks and toilets?

Accepted Answer

Sanitary drain pipe

Answer

Overflow drain pipe

Answer

Waste drain pipe

Answer

Storm drain pipe

Question 39

What is the purpose of a pressure-reducing valve in a gas system?

Accepted Answer

To reduce the gas pressure entering the building

Answer

To regulate the flow of gas

Answer

To increase the gas pressure entering the building

Question 40

Which type of water supply system utilizes a pump to draw water from a well or cistern?

Accepted Answer

Private water supply system

Answer

Gravity-fed water supply system

Answer

Booster water supply system

Answer

Municipal water supply system

Question 41

What is the primary purpose of a clean-out in a plumbing system?

Accepted Answer

To provide access for cleaning and removing clogs

Answer

To increase water pressure

Answer

To regulate water flow

Question 42

Which plumbing material is known for its flexibility and corrosion resistance?

Accepted Answer

PEX

Answer

Cast iron

Answer

ABS

Answer

PVC

Question 43

In a drainage system, what is the name of the system that uses one pipe to collect wastewater from multiple fixtures?

Accepted Answer

Single-stack system

Answer

Trap system

Answer

Vent system

Answer

Branch system

Question 44

In a gas piping system, what is the function of a regulator?

Accepted Answer

To reduce the pressure of the incoming gas supply

Answer

To detect leaks in the gas lines

Answer

To control the flow of gas to appliances

Question 45

Which plumbing fixture is typically connected to a trap with a vent stack?

Accepted Answer

Toilet

Answer

Faucet

Answer

Dishwasher

Answer

Showerhead

Question 46

In plumbing systems, which material is uncommonly used for water pipes?

Accepted Answer

Aluminum

Answer

Copper

Answer

PVC

Question 47

What type of water supply system delivers both hot and cold water to fixtures through a single pipe?

Accepted Answer

One-pipe system

Answer

Branch system

Answer

Ring system

Answer

Two-pipe system

Question 48

Which plumbing system is designed to minimize water hammer?

Accepted Answer

Two-pipe system

Answer

One-pipe system

Answer

Branch system

Question 49

In a plumbing system, what is the primary purpose of a water heater?

Accepted Answer

To provide hot water for domestic use

Answer

To filter water impurities

Answer

To regulate water pressure

Answer

To prevent water leaks

Question 50

Which type of water supply system is most commonly found in residential homes?

Accepted Answer

Branch system

Answer

Ring system

Answer

One-pipe system

Question 51

A vent stack is an essential component of which type of plumbing system?

Accepted Answer

Drainage system

Answer

Gas system

Answer

Water heating system

Answer

Water supply system

Question 52

What is the primary purpose of a trap in a plumbing system?

Accepted Answer

To prevent sewer gases from entering the building.

Answer

To regulate water flow.

Answer

To prevent backflow of water.

Answer

To filter impurities from water.

Question 53

Which type of pipe is typically used for gas lines in residential buildings?

Accepted Answer

Copper

Answer

ABS

Answer

Cast iron

Answer

PVC

Question 54

In a water supply system, what is the function of a pressure reducing valve (PRV)?

Accepted Answer

To regulate water pressure entering the building.

Answer

To filter impurities from water.

Answer

To prevent backflow of water.

Answer

To control water temperature.

Question 55

Which type of plumbing system is designed for multi-story buildings with multiple fixtures?

Accepted Answer

Upfeed system

Answer

One-pipe system

Answer

Downfeed system

Answer

Branch system

Question 56

What is the purpose of a water heater in a plumbing system?

Accepted Answer

To provide hot water for fixtures.

Answer

To prevent backflow of water.

Answer

To regulate water pressure.

Answer

To filter impurities from water.

Question 57

Which of the following is NOT a common type of drain pipe material?

Accepted Answer

Steel

Answer

PVC

Answer

Cast iron

Answer

ABS

Question 58

What is the primary function of a sewer line in a plumbing system?

Accepted Answer

To carry wastewater away from the building.

Answer

To supply fresh water to the building.

Answer

To vent sewer gases.

Question 59

Which type of plumbing fixture requires a dedicated vent line?

Accepted Answer

Toilet

Answer

Showerhead

Answer

Faucet

Answer

Sink