WorksheetsHot water systems lesson 5 quiz
Total questions: 15
Worksheet time: 8mins
Which maintenance task involves ensuring the smooth movement of parts?
Temperature settings adjustment
Lubrication of parts
Cleaning filters
Checking pipe size
What should be done to ensure the proper operation of shower valves?
Increase water pressure
Lubricate parts
Adjust water temperature
Clean water filters
What can cause an isolation valve to pass water?
Build-up of limescale
Proper lubrication
Regular use
New installation
What should be done if a valve has not been closed for a long time?
Leave it as is
Check for passing water
Increase water pressure
Change its color
What is the maximum flow velocity of water above which noise becomes audible according to BS6700?
2 m/s
3 m/s
4 m/s
5 m/s
According to document G of the building regulations, what should systems be designed to operate below to prevent noise?
2 m/s
3 m/s
4 m/s
5 m/s
What is the effect of a flow velocity above 3 m/s in water systems?
Increased water quality
Audible noise
Decreased water flow
Increased water temperature
What could be included as a green energy source for heating?
Wind turbine
Solar panels
Biomass boiler
All of the above
Which of the following is an indicator of immersion element failure?
Excessive noise.
No hot water.
Water leakage.
High water pressure.
In which type of cylinder does the hot water become discoloured when the air bubble is lost?
Unvented cylinder
Single feed cylinder
Double feed cylinder
Ventilated cylinder
What is the final step to resolve the air bubble issue?
Leaving the system empty
Refilling the system
Discharging the pressure relief valve
Discolouring the hot water
What is the effect of the pressure relief valve discharging in an unvented cylinder?
It causes the air bubble to form.
It indicates the air bubble is lost.
It discolours the hot water.
It cools the system.
What should be done to hot water pipes to prevent heat transfer to cold water pipes?
Install them below cold water pipes.
Insulate them and install above cold water pipes.
Use larger pipes.
Paint them black.
According to BS8000 pt15, where should the hot pipe be installed?
Below the cold pipework.
Next to the cold pipework.
Above the cold pipework.
Inside the cold pipework.
What is a common issue in hard water areas that can cause blockages and reduce efficiency?
Rust
Limescale
Mold
Algae
