WorksheetsLevel 2 Cold Water Plumbing Exam [QUIZ 1]
Total questions: 20
Worksheet time: 10mins
What is the purpose of WRAS-approved fittings?
Aesthetic appeal
Legal requirement, corrosion resistance, and avoidance of contamination
Cost reduction
Improved taste of water
What standard covers the design, installation, and maintenance of water systems?
BS EN 725
BS EN 901
BS EN 806
BS EN 1020
Which of the following is NOT an above-ground water source?
Lakes
Rivers
Wells
Reservoirs
What type of pipe is typically used for mains water supply?
PVC
MDPE (Medium Density Polyethylene)
Copper
Galvanized steel
In an indirect cold water system, which outlet is NOT fed from the cold water storage cistern (CWSC)?
Bathroom sink
Kitchen tap
Toilet cistern
Shower
Which fluid category represents a significant health risk and could be toxic?
Fluid Category 1
Fluid Category 2
Fluid Category 4
Fluid Category 5
Which fluid category consists of wholesome water supplied by the water undertaker?
Fluid Category 1
Fluid Category 3
Fluid Category 4
Fluid Category 5
What is a Sure Stop valve?
A type of pressure-reducing valve
A diaphragm valve that closes under water pressure
A manually operated gate valve
A double check valve
What is the primary function of a stop valve?
Controls water flow at low pressure
Used for isolating appliances
Used on mains pressure, can be maintained and repaired
Prevents backflow of water
Which valve is typically installed before an appliance like a toilet or boiler?
Fullway gate valve
Isolation/service valve
Stop valve
Drain-off valve
Which float valve type is NOT suitable for CWSC as it may become brittle?
Part 1
Part 2
Part 3
Part 4
What is a key feature of a Part 4 float valve?
Brass construction
Uses a piston mechanism
Equilibrium valve with a bag to help fill quietly
Bottom outlet design
What is a key characteristic of a ceramic disc tap?
Uses a rubber washer
Requires multiple turns to open
Operates with a quarter-turn mechanism
Only used in kitchens
Which tap type ensures that hot and cold water mix within the body and requires backflow prevention?
Pillar tap
Mixer tap
Bib tap
High-neck pillar tap
What is the primary function of a double check valve?
Protects Fluid Category 1 from Fluid Category 2
Protects Fluid Category 1 from Fluid Category 3
Protects Fluid Category 1 from Fluid Category 4
Protects Fluid Category 1 from Fluid Category 5
What does an RPZ (Reduced Pressure Zone) valve protect against?
Fluid Category 2
Fluid Category 3
Fluid Category 4
Fluid Category 5
What material should a cold water storage cistern be placed on?
Chipboard
Plywood
Metal
Concrete
What is the minimum clearance required above a CWSC for maintenance?
100mm
200mm
350mm
500mm
How long should you leave a rigid pipe system pressurized after raising the pressure to 1.5 times the working pressure?
15 minutes
30 minutes
1 hour
2 hours
What is the initial test pressure when testing plastic pipework?
0.5 bar
1 bar
2 bar
3 bar
