knowledge check 3

According to the passage, what is an important skill for a plumber to learn?

• Painting walls

• Identifying, diagnosing, and rectifying faults in a plumbing system

• Installing electrical wiring

• Gardening

The noises a faulty system may make vary, from a squealing tap washer to the violent reverberation of pipework with _________

• water hammer

• air lock

• rust build-up

• loose valve

Most noises within a cold water system are a direct result of which of the following?

• Low temperature and humidity

• High pressure and flow rates

• Old pipes and rust

• Poor insulation

A high-pressure system will always create a certain amount of noise.

• True

• False

According to the passage on 'Noise faults,' what is a common cause of a humming or squealing noise when a tap is opened and water begins to flow?

• The tap washer is split or worn

• The water pressure is too high

• The tap is not turned on fully

• The pipes are blocked

According to the passage on 'Noise faults,' fitting a new ______ will cure the problem in most cases.

• washer

• bolt

• spring

• gasket

According to the passage on 'Noise faults,' fitting a new washer will cure the problem in most cases.

• True

• False

Look at the images showing the process of fixing a faulty tap washer. What is the first step in the process?

• Remove the tap washer

• Turn on the water supply

• Unscrew the tap head

• Replace the tap washer

Look at the images showing the process of fixing a faulty tap washer. What is being removed in the second step?

• The tap handle

• The tap washer

• The tap spout

• The water supply pipe

Look at the images showing the process of fixing a faulty tap washer. In the third step, the faulty washer is being ________.

• replaced

• painted

• measured

• cleaned