9189PH1ProcessesPPT3

Which of the following materials is NOT commonly used by plumbers for pipework inside dwellings according to the learning material?

• Copper

• Low carbon steel

• Plastic

• Aluminum

What is the British Standard number for copper tubes used in plumbing systems?

• BSEN 1057

• BSEN 2057

• BSEN 3057

• BSEN 4057

What is the density of copper as mentioned in the document?

• 8,900 kg/m³

• 7,900 kg/m³

• 9,900 kg/m³

• 8,000 kg/m³

What is the melting point of copper?

• 1,083°C

• 1,183°C

• 983°C

• 1,283°C

What is the coefficient of linear expansion for copper?

• 0.000016

• 0.000026

• 0.000006

• 0.000046

What is the characteristic of the copper grade R220?

• It is the hardest copper and used in medical applications.

• It is no longer used in the UK and is unsuitable for bending.

• It is softer, fully annealed copper used for underground services.

• It is the most widely used copper grade, supplied in 3m lengths.

Which copper grade is described as being 'half hard' and is the most widely used?

• R220

• R250

• R290

• R300

For what reason is the R290 grade of copper no longer used in the UK?

• It is too soft and flexible.

• It is half hard and not suitable for most plumbing needs.

• It is thin-walled hard copper, unsuitable for bending.

• It is only supplied in very short lengths.

What is the range of lengths in which R220 soft copper coils are available?

• 5m to 25m

• 10m to 50m

• 15m to 45m

• 20m to 60m

What are the available lengths of R250 half hard copper?

• 3m and 5m

• 3m and 6m

• 4m and 6m

• 5m and 7m