WorksheetsCommon plumbing processes part 1
Total questions: 45
Worksheet time: 23mins
What is the equivalent of 10 millimetres in centimetres?
1 cm
10 cm
100 cm
0.1 cm
How many millimetres are there in a metre?
100 mm
1,000 mm
10,000 mm
100,000 mm
Which tool is used for accurate pipework measurement and bending?
Steel rule
Tape measure
Site tape
Laser distance meter
Which tool is best for quick room measurements?
Steel rule
Tape measure
Site tape
Laser distance meter
What type of bender is used for soft coiled copper measuring 6, 8, and 10mm?
Scissor type bender
Stand bender
Microbore hand bender
Hydraulic bender
Which bender is suitable for half hard copper measuring 15 and 22mm?
Microbore hand bender
Scissor type bender
Stand bender
Pipe bender
For bending half hard copper of 28 and 32mm, which bender should be used?
Microbore hand bender
Scissor type bender
Stand bender
Tube bender
What are the two types of electric tube benders mentioned?
Hand and stand mounted
Manual and automatic
Large and small
Internal and external
What is the new designation for Table W in the BSEN1057 standard?
R250
R220
R290
R300
Which type of copper is described as "Half hard straight lengths" in the table?
Table W
Table X
Table Y
Table Z
What is the diameter range for coiled microbore (heating) copper tubes?
15-54 mm
6, 8, 10 mm
15-22 mm
Not commonly available
Which table is associated with annealed coils for underground use?
Table W
Table X
Table Y
Table Z
What are the sizes for minibore/microbore tubes?
6, 8, 10mm
12, 15, 22mm
28mm and larger
3 or 6m
What is the size range for small bore tubes?
6, 8, 10mm
12, 15, 22mm
28mm and larger
3 or 6m
How is half hard copper R250 typically purchased?
In coils of 10 or 50m
In 3 or 6m straight lengths
In 12, 15, 22mm sizes
In 28mm and larger sizes
What is the typical purchase form for soft, minibore R220 copper?
In 3 or 6m straight lengths
In coils of 10 or 50m
In 12, 15, 22mm sizes
In 28mm and larger sizes
Why is it important to protect copper pipes in vulnerable areas?
To prevent them from bending
To avoid corrosion
To ensure proper insulation
To maintain their color
What is the main purpose of coating pipes?
Decoration
Protection and identification
Insulation
Weight reduction
What is the main purpose of chrome-coated copper pipes?
Insulation
Weight reduction
The finish
Decoration
What are the methods mentioned for bending copper tubes?
Welding and soldering
Bending springs, hand bender, machine floor-standing bender
Cutting and gluing
Heating and cooling
What is the maximum size for a machine floor-standing bender mentioned in the document?
50mm
42mm
30mm
60mm
Which type of copper tube is mentioned as being bendable using the methods listed?
R300 Table Z
R220 Table Y and R250 Table X
R100 Table A
R400 Table B
What is one advantage of bending pipes rather than using a fitting?
Increased frictional resistance
Higher cost
Less frictional resistance
More complex installation
Why might bending pipes be more cost-effective than using fittings?
It requires more materials
It costs less
It takes longer to install
It requires specialized tools
What is a benefit of prefabricating sections when bending pipes?
It increases the number of joints
It can be done in one go
It requires more labor
It decreases efficiency
What are bending springs occasionally used for by plumbers?
To cut pipes
To bend pipes without creasing
To measure pipe length
To join two pipes together
What is the purpose of twisting a bar through the end of a bending spring?
To loosen the spring
To tighten the spring
To break the spring
To shorten the spring
Why is the spring bend normally over-pulled before easing back to 90 degrees?
To make the spring longer
To make the spring withdrawal easier
To make the spring stronger
To make the spring more flexible
What happens to the material on a pipe when it is bent?
It gains material on both sides.
It compresses material on both sides.
It gains material on one side and compresses on the other.
It remains unchanged.
How can you accurately determine the length of pipe needed for a bend?
By guessing the length.
By measuring the length of pipe the bend actually occupies.
By using a random length.
By doubling the pipe's diameter.
What is the formula for calculating the radius center line of a pipe bend?
Radius x 3 x 3.14
Radius x 2 x 3.14
Radius x 5 x 3.14
Radius x 4 x 3.14
What is the typical relationship between the radius center line and the diameter of the pipe?
2 times the diameter
3 times the diameter
4 times the diameter
5 times the diameter
What is the formula used to calculate the overall length of the pipe in the example?
Radius x 2 x 3.14 / 4
Radius x 3.14 / 2
Radius x 2 x 3.14
Radius x 3.14 x 4
What are the three angles marked on the tube bender in the image?
30°, 45°, 90°
15°, 30°, 60°
45°, 60°, 90°
10°, 20°, 30°
What is the recommended practice to avoid cutting tubes to length?
Work from a random point
Work from a fixed point
Work from the end of the tube
Work from the middle of the tube
What is one of the golden rules for measuring and bending tubes?
Back to back
Side to side
Top to bottom
Front to front
What should you do before cutting or bending a tube?
Measure once, cut twice
Measure twice, cut once
Cut first, measure later
Bend first, measure later
When a section needs multiple bends, what is important about the first bend?
It should be the largest bend
It should be correctly positioned
It should be the last bend
It should be ignored
Which tool is used for measuring angles and ensuring they are square?
Scissor type bender and slips
Engineers square
Steel rule (mm)
Pencil
What tool would you use to cut metal tubes?
Combination square
Pencil
Senior/junior hacksaw 32tpi
Steel rule (mm)
What is the primary use of a scissor type bender and slips?
Measuring angles
Bending tubes
Cutting metal
Marking measurements
Which of the following is NOT listed as a common bend in the learning material?
Offset
Spiral
Back to back
Full pass over
What is the term used by Yorkshire manufacturers to determine the required length of copper tube?
Y dimensions
Z dimensions
X dimensions
W dimensions
What does the X dimension represent in the context of measuring copper tubes?
Diameter of the tube
Centre of fitting to the engaged length
Thickness of the tube
Length of the tube
How do you calculate the pipe length if you know the type of fittings and the centre-to-centre distance?
Add 2 x dimensions
Subtract 2 x dimensions
Multiply by 2 x dimensions
Divide by 2 x dimensions
