WorksheetsCold-Water Supply Quiz
Total questions: 1
Worksheet time: 1hrs 17mins
At which level is water supply legislation fully covered according to the chapter overview?
Level 1
Level 2
Level 3
Level 4
Which of the following topics is NOT mentioned as a coverage area in this chapter on cold-water supply?
Water Regulations
Water treatment
Heating systems
Frost protection
What is the primary purpose of the Water Supply (Water Fittings) Regulations 1999?
To increase water supply costs
To prevent contamination and misuse of water supply
To privatize water supply services
To reduce water supply to consumers
Who is responsible for enforcing the Water Supply (Water Fittings) Regulations 1999?
Local governments
Water supplier
Individual homeowners
Environmental agencies
What is the legal term for the water companies that supply domestic water according to the provided definition?
Water regulator
Water undertaker
Water distributor
Water manager
What is a key requirement for a contractor to be approved under the Water Supply (Water Fittings) Regulations 1999?
Must be a government employee
Must use the least expensive materials
Must meet key requirements such as employing competent staff
Must operate only locally
What is the classification of water based on its ability to dissolve gases and solids?
Its color
Its taste
Its solvent power
Its temperature
What is the effect of solvent power mentioned in the context of plumbing?
It enhances the efficiency of plumbing systems.
It has no significant effect on plumbing systems.
It can cause corrosion and blockage in plumbing systems.
It increases the water flow in pipes.
According to the diagram, what type of water results from rainwater passing through moorland?
Permanent hard water
Temporary hard water
Very soft water
Soft water
What causes the classification of water as 'temporary hard water' according to the diagram?
CO2 dissolving limestone
CO2 added in moorland
Salt (calcium sulphate)
Sandstone retaining CO2
What is the primary cause of water becoming 'permanent hard water' as shown in the diagram?
Limestone and chalk adding CO2
Moorland adding CO2
Salt (calcium sulphate)
Sandstone retaining CO2
What is the classification of water hardness if it contains 120 mg/litre of dissolved gases?
Moderately soft
Slightly hard
Moderately hard
Hard
According to the text, why might water become acidic when it comes into contact with peat?
Due to high temperatures
Because of its high mineral content
Because of its passage through a particular soil type
Due to pollution from nearby urban areas
What is the primary purpose of constructing artificial reservoirs?
To increase the recreational areas
To meet an ever-increasing demand for water in both domestic and industrial sectors
To improve the scenic beauty of an area
To reduce water consumption
How are artificial reservoirs typically created?
By digging deep wells
By constructing large dams
By flooding low-lying areas of land, normally by damming a water course
By diverting rivers directly to urban areas
What type of water is generally found in rivers and streams from upland sources?
Hard and polluted
Soft and generally clean
Salty and unusable
Hard and mineral-rich
What does the term 'wholesome water' refer to in the context of human consumption?
Water that is aesthetically pleasing
Water that is available in large quantities
Water that is good quality and suitable for human consumption
Water that is used for agricultural purposes
What is the classification of a well that does not necessarily refer to its actual depth, but rather its ability to penetrate the first impervious stratum of the earth?
Artesian well
Shallow well
Deep well
Spring well
What is the definition of 'water table' as provided in the image?
The top layer of the ground that holds water.
A measurement of how deep the water is in a well.
The natural level of water under the earth.
The equipment used to measure water depth.
How does an artesian well function according to the image?
It collects water from above the water table.
It allows water to escape to the surface without pumping.
It forces water out by mechanical means.
It penetrates only the pervious strata.
Which type of water source is classified as "Wholesome" according to the table provided in the document?
River water
Spring water
Stored rainwater
Shallow well
What is the contamination level of water from "Surface water from cultivated land"?
Very palatable
Moderately palatable
Non palatable
Not specified
According to the document, what is the primary treatment needed for water from deep wells and bore holes?
Chemical treatment
Filtration
Sterilisation
No treatment needed
What is the main purpose of water storage by water companies as mentioned in the document?
To ensure aesthetic quality of water
To maintain supply for about 24 hours in emergencies
To increase water pressure
To reduce water cost
Which of the following is NOT listed as a source of "Dangerous" water in the document?
River water
Shallow well
Deep well water
Spring water
What is the primary function of water mains in a water supply system?
To provide electrical insulation
To supply wholesome water to domestic and commercial properties
To transport sewage
To irrigate agricultural land
Which materials are commonly used for constructing water mains?
Plastic and glass
Asbestos cement, steel, PVC or cast iron
Wood and bamboo
Copper and bronze
What is required when connecting new mains to existing mains operating under live pressure?
Basic hand tools
Specialist equipment
No additional tools or equipment
Standard office supplies
What does the diagram in Figure 6.7 illustrate?
A sewage treatment layout
A typical mains water distribution system
An electrical grid layout
A residential heating system
What is the role of a ferrule in a mains tapping machine as shown in Figure 6.8?
It holds the body together
It seals the water main
It holds the spindle
It rotates the body
What is a ferrule as defined in plumbing?
A type of valve used to control water flow
A metal fitment used to connect to a main allowing isolation
A tool used for tightening pipes
A measurement unit for pipe diameter
According to the diagram, what is the purpose of the external stop valve in the supply pipework to the building?
To measure water pressure
To prevent backflow of water
To control the water supply entering the building
To filter the water
What is the minimum depth indicated for the service pipe installation in the diagram?
750 mm
1,350 mm
1,000 mm
500 mm
What is the minimum depth that mains and service pipes should be buried to protect against frost damage and the surface of the ground?
750 mm
1.350 m
500 mm
1 m
What is the maximum depth of cover for service pipes to ensure ease of access?
1.350 m
2 m
1 m
750 mm
Which of the following is NOT a method to protect metal pipes from corrosion due to acidic soils?
Use of plastic sheathed pipe
Wrapping the pipe with anti corrosive tape
Installing the pipe inside a duct
Coating the pipe with grease
What is the minimum size allowed for a cold water service pipe to a dwelling?
15 mm
20 mm
10 mm
25 mm
What material is commonly used for the stop valve cover in the installation of external stop valves?
Steel plate
Plastic
Copper
Aluminum
What is the primary purpose of installing water meters in domestic premises?
To regulate the water pressure
To measure the amount of water used
To purify the water
To increase water flow
Where are external water meters usually installed in new domestic installations?
Near the water tank
Alongside the main water valve
Incorporating a service stop valve
Inside the kitchen area
According to the text, internal water meters are not commonly seen in which type of properties?
Commercial properties
Large domestic properties
Small domestic properties
Rural properties
What is the primary purpose of the stop and drain valve in a building's cold-water supply system?
To regulate the temperature of the water
To turn on/off the water supply and enable system maintenance
To filter the water before it enters the building
To increase the water pressure in the system
According to the text, what additional feature should the supply pipe have as it enters the property?
A pressure gauge
An isolation valve and a drain-off facility at the lowest point
A heating mechanism
A water softening unit
What is essential to measure as part of the installation process of water systems, as mentioned in the text?
Water color and clarity
Water temperature
Water pressure and flow rate
Chemical composition of the water
What is the importance of keeping the weir cup level during a water flow rate measurement?
It ensures accurate pressure readings.
It prevents water spillage.
It ensures accurate flow rate readings.
It reduces the need for recalibration.
What common issue can occur if water pressure readings are not taken at the correct stage in a domestic system installation?
The water may taste different.
The installation can be completed more quickly.
There can be significant pressure and flow issues.
The water temperature may fluctuate.
Which method is NOT listed as a way to treat water hardness?
Base exchange softeners.
Scale reducers.
Magnetic water conditioners.
Chemical water purifiers.
What is the primary function of a base exchange water softener as described in the text?
To filter and store drinking water
To pass hard water through a tank containing resin particles to remove hardness salts
To heat water
To add minerals to the water
What is the key consideration in the installation of base exchange water softeners to ensure safety and efficiency?
Ensuring it is aesthetically pleasing
Prevention of backflow and contamination of the water supply
Making sure it uses the least amount of salt possible
Checking that it operates silently
What is BS6700 in the context of installing a water softener?
A type of resin used in water softeners
A manual override switch
A key reference source for installation recommendations
A specific type of salt used in the regeneration process
What is BS6700 primarily concerned with in the context of plumbing?
Electrical safety standards
Installation requirements for hot and cold water systems
Guidelines for wastewater management
Regulations for gas piping systems
Which of the following best describes a direct cold-water system?
Water is drawn from a cistern located outside the building.
Water is taken directly from the rising main to the draw-off points.
Water is heated before being distributed to draw-off points.
Water passes through a series of filters before reaching the draw-off points.
What is the role of the kitchen sink in an indirect cold-water system?
It filters the water before it is stored in the cistern.
It directly receives water from the rising main.
It is the only draw-off point fed directly from the rising main.
It distributes water to other parts of the house.
Refer to the diagram below to answer: What is the function of the component labeled as "Ferrule" in the direct cold-water system diagram?
Controls the flow of water to the drain valve
Connects the internal piping to the main water supply
Acts as a safety device to prevent backflow
Seals the end of the pipes to prevent leaks
What is one of the advantages of a direct water system in domestic properties as mentioned in the text?
It requires a large storage cistern
It is noisier than other systems
It is cheaper to install because less pipework is required
It has a reserve of cold water if the supply is shut off
Which of the following is a disadvantage of a direct water system?
Lower demand on the main at peak periods
Higher pressure may make the system noisy
Smaller risk of frost damage
Drinking water is unavailable from draw-off points
What is the minimum size of the storage cistern required for a direct water system?
220 litre minimum
110 litre minimum
150 litre minimum
200 litre minimum
Why is there no reserve of cold water in a direct system if the mains or service supply is shut off?
Because the system uses a large storage cistern
Because it operates on high pressure
Because it does not include a reserve tank
Because the pipework is extensive
What is the most commonly installed type of cold water system in domestic properties due to its cost effectiveness and high pressure availability?
Indirect cold-water system
Gravity-fed system
Direct cold-water system
Pumped system
What is one of the advantages of using an indirect cold-water system?
Increased risk of frost damage
Higher system noise
Reserve of stored water in case of mains failure
Higher cost of storage cistern and pipework
Which of the following is NOT a requirement for cold-water storage cisterns according to the Water Regulations Schedule 2?
Must be fitted with an effective inlet control device
Must be arranged to prevent water circulation
Must be insulated to prevent heat loss
Must be covered to exclude light or insects
What is a disadvantage of the indirect cold-water system?
Lower demand on the main at peak periods
Increased risk of frost damage
Reduced risk of system noise
Reserve of water should the mains supply be turned off
According to the 1999 Water Regulations, what was a potential issue with water before these regulations?
Water was always potable
Water might not have been potable
Water systems were less expensive
Water systems required less space
What was the main material used in the past for making cold water storage cisterns?
Polyethylene
Polyvinyl chloride
Galvanized low carbon steel
Stainless steel
Which materials are most commonly used for new installations of cold water storage cisterns?
Copper and bronze
Galvanized low carbon steel
Polyethylene and polyvinyl chloride
Glass and ceramic
What is the purpose of the screened air vent in a cold water storage cistern?
To allow water to flow out
To prevent contamination
To measure water level
To regulate temperature
What is the primary material used for the majority of cisterns due to its various beneficial properties?
Metal
Polypropylene
Ceramic
Glass
Why must the base of the cistern be fully supported throughout its entire length and width?
To prevent leakage
To enhance flexibility
To prevent algae growth
To prevent structural failure
What should not be used to make a hole in a cistern, as it degrades the plastic and results in cistern failure?
A hole saw
Heating a section of pipe
A drill
A screwdriver
Which type of valve is typically used in domestic applications for controlling the water level in a storage cistern?
Gate valve
Butterfly valve
Float-operated valve
Ball valve
Which of the following is NOT a type of valve compliant with BS1212 parts 1–4?
Portsmouth type
Diaphragm valve made of brass
Diaphragm valve made of plastic
Rotary valve
What is the primary function of a warning pipe in a cistern system?
To regulate the water flow
To alert occupants to a system overflow
To distribute cold and hot water
To connect to the sewage system
Which type of valve is typically installed as a spherical type in WC cisterns?
Diaphragm valve
Portsmouth valve
Wheelhead gate valve
Equilibrium valve
What is the purpose of the overflow pipe in a cistern system?
To provide additional water supply
To prevent backflow of water
To discharge excess water safely
To measure water levels
For what capacity are cisterns required to have both a warning pipe and an overflow pipe?
Up to 1000 litres
Between 1000 and 5000 litres
More than 5000 litres
Less than 500 litres
