Water Distribution and Piping: Master the Basics of Plumbing Systems

Question 1

What is the most significant factor in determining the diameter of a water distribution pipe?

Accepted Answer

Flow rate

Answer

Water pressure

Answer

Number of fixtures connected

Answer

Pipe material

Question 2

What is the primary purpose of a pressure reducing valve (PRV) in a plumbing system?

Accepted Answer

To regulate water pressure and prevent damage to plumbing fixtures

Answer

To control water flow rate

Answer

To prevent water hammer

Answer

To enhance water quality

Question 3

Which type of joint is typically used to connect copper water distribution pipes?

Accepted Answer

Soldered joint

Answer

Compression joint

Answer

Flared joint

Answer

Grooved joint

Question 4

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

Accepted Answer

To prevent the flow of contaminated water back into the potable water supply

Answer

To regulate water pressure

Answer

To control water flow rate

Answer

To improve water quality

Question 5

Which of the following is a common cause of water hammer in a plumbing system?

Accepted Answer

Sudden closing of a faucet

Answer

Air trapped in pipes

Answer

Loose pipes

Answer

Insufficient pipe sizing

Question 6

What is the main function of a manifold in a water distribution system?

Accepted Answer

To distribute water to multiple fixtures simultaneously

Answer

To regulate water pressure

Answer

To prevent backflow

Answer

To enhance water quality

Question 7

In a water distribution system, the primary function of a pressure-reducing valve is to:

Accepted Answer

Reduce water pressure

Answer

Increase water pressure

Answer

Control flow rate

Answer

Prevent water leakage

Question 8

Which type of joint is most commonly used to connect copper pipes?

Accepted Answer

Soldered joint

Answer

Flared joint

Answer

Compression joint

Answer

Push-fit joint

Question 9

The primary purpose of a backflow preventer in a water distribution system is to:

Accepted Answer

Prevent water from flowing back into the potable water supply

Answer

Reduce water pressure

Answer

Increase water flow rate

Answer

Control water temperature

Question 10

Which type of pipe fitting is designed to change the direction of a pipe run by 90 degrees?

Accepted Answer

Elbow

Answer

Tee

Answer

Reducer

Answer

Union

Question 11

In a water distribution system, what is the main function of a water meter?

Accepted Answer

Measure water consumption

Answer

Control water pressure

Answer

Prevent water leaks

Answer

Regulate water flow

Question 12

When soldering copper pipes, the recommended method involves the use of:

Accepted Answer

Propane torch and soldering flux

Answer

Solderless joint

Answer

Heat gun

Answer

Soldering iron

Question 13

To precisely calculate the pressure loss within a pipe, which formula should be employed?

Accepted Answer

f * L * v^2 / (2 * g * D)

Answer

P = f * (v / D)

Question 14

Among the provided pipe materials, which one is renowned for its exceptional resistance to corrosion?

Accepted Answer

Copper

Answer

Galvanized steel

Question 15

Within a water distribution system, what is the primary function of a water meter?

Accepted Answer

Accurately measure water usage

Answer

Control water flow

Question 16

To achieve complete water flow isolation, which type of valve is most suitable?

Accepted Answer

Gate valve

Answer

Check valve

Question 17

When installing PEX tubing, which practice should be strictly avoided?

Accepted Answer

Running it directly through studs

Answer

Secure with clamps

Question 18

In a plumbing system, what is the primary purpose of a backflow preventer?

Accepted Answer

Preventing water from flowing in the wrong direction

Answer

Increase water pressure

Question 19

Which type of water softener is widely used in homes?

Accepted Answer

Salt-based ion exchange

Answer

Reverse osmosis

Question 20

In a plumbing fixture, what is the main purpose of a trap?

Accepted Answer

Preventing sewer gases from entering the building

Answer

Store water for flushing

Question 21

In water distribution systems, which pipe material is commonly preferred for its resistance to corrosion and durability, making it suitable for underground installations?

Accepted Answer

Polyvinyl Chloride (PVC)

Answer

Galvanized Steel

Answer

Acrylonitrile Butadiene Styrene (ABS)

Answer

Copper

Question 22

For calculating pressure drop in a pipe, which formula is commonly used?

Accepted Answer

P = f * (L/D) * (V^2 / 2g)

Answer

P = (Q * L) / A

Answer

P = (2 * g * L) / D

Answer

P = Q * V

Question 23

Which factor does NOT influence the flow rate through a pipe?

Accepted Answer

Temperature

Answer

Pipe diameter

Answer

Viscosity of the fluid

Answer

Pipe length

Question 24

In plumbing systems, what is the primary purpose of a backflow preventer?

Accepted Answer

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

Answer

To reduce water pressure

Answer

To regulate water flow

Question 25

Which type of fitting is used to connect two pipes at a 90-degree angle in a plumbing system?

Accepted Answer

Elbow

Answer

Reducer

Answer

Tee

Answer

Union

Question 26

In potable water distribution systems, which material should NOT be used for pipes?

Accepted Answer

Lead

Answer

Polyethylene

Answer

Polyvinyl Chloride (PVC)

Answer

Copper

Question 27

In a plumbing system, what is the purpose of a pressure reducing valve?

Accepted Answer

To lower excessive water pressure from the main supply to a more suitable level

Answer

To prevent backflow

Answer

To increase water flow

Question 28

What is a key benefit of using a water hammer arrestor in a plumbing system?

Accepted Answer

Preventing damage to pipes and fixtures caused by water shock

Answer

Increasing water pressure

Answer

Reducing water flow