1) What is the abbreviation for the regulation that ensures that electrical work equipment is suitable, well maintained, and used correctly? a) PUWER. b) POWER. c) POWDER. d) PURGE. 2) Which organization provides information and advice about work-related health, safety, and illness? a) Health and Social Executive. b) Health and Safety Executive. c) Health and Safety Expert. d) Health and Social Expert. 3) Who is responsible for providing PPE when working on-site? a) Employer. b) Main contractor c) Site foreman. d) Client. 4) What is the correct cable color coding used for 110 V construction site equipment? a) Red. b) Yellow. c) Blue. d) White. 5) What is the maximum recommended voltage for drills on-site when battery-powered tools are not available? a) 414 volts. b) 230 volts. c) 315 volts. d) 110 volts. 6) When should ladders be considered for use on-site? a) Access or light work of short duration and if it is safe. b) Heavy work for long durations and if it is sa'fe. c) If they are long enough to reach the access point. d) If they are erected at an angle 1 :6. 7) Trenches should be excavated to what maximum depth before supports are required? a) 1.2 m b) 1.6 m c) 2.0 m d) 2.4 m 8) What power tool is shown in the image? a) Crimping tool. b) Pipe cutter. c) Reciprocating saw. d) Pipe threader. 9) Which size masonry drill bit would be most suitable when fixing a number of 15 mm plastic clips to a brick wall using red plastic plugs? a) 6mm b) 9mm c) 12mm d) 15mm 10) Why would one use a work program on a plumbing contract? a) To monitor the progress of the wo􀇢·k. b) To show where the components a•·e to be fitted. c) To list all materials required for the contract. d) To record all money spent on the contract. 11) What copper tube grade would be most suitable for installing underground cold water services? a) R200 (reinforced). b) b. R220 (annealed). c) c. R250 (half hard). d) d. R290 (hard). 12) What are ripples most commonly caused by when bending copper tube on a bending machine? a) Excessive pressure from ·the •·roller b) Inadequate pressure from the roller. c) Using new equipment d) Using old equipment. 13) What does R1 and R2 equal when R1 is x4 the diameter of a 15 mm tube and the tubes are spaced 80 mm apart? a) R1 = 60 mm, R2 = 140 mm b) R1 = 60 mm. R2 = 150 mm c) R1 = 65 mm, R2 = 130 mm d) R1=65mm, R2=I60mm 14) What is the ductility of a metal? a) Its abil!ty to be stretched without breaking. b) Its hardness to resist scratch:n:;;:. c) Its ability to transfer heat d) Its ability to resist corrosion. 15) What is an example of a thermosetting plastic? a) Polyester. b) ABS. c) Polyp ·opylene. d) Polyethylene. 16) Which pair of metals will be affected by electrolytic corrosion the most when in the presence of moisture? a) Tin and lead. b) Iron and zinc. c) Copper and iron. d) Copper ancl aiuminium. 17) What type of material allows the free movement of electrons? a) Good conductor. b) Good insulator c) Good resistor d) Good transformer 18) What size overcurrent protection device is most suitable to protect a circuit that has a 9 kW electric shower installed on a 230-volt supply? a) 16 amps. b) 32 amp s. c) 40 amps. d) 50 amps. 19) What water source is best for providing water of good quality? a) Deep well. b) Shallow well c) River·. d) Canal. 20) What pipe brings water from the water main at the property boundary up to the stop tap in the property? a) Supply pipe. b) Communication pipe. c) Service pipe. d) Distribution pipe. 21) Which cold water system has the following advantages? Reserve water supply, reduced risk of water hammer, less risk of backflow, showers may be supplied at equal pressure. a) Indirect􀛥system b) Direct system. c) High pressure system d) Gravity system 22) What sequence of treatment does water go through before it is classed as wholesome? a) Sedimentation, filtration, sterilisation b) Filtration, sterilisation, sedimentation c) Sterilisation, sedimentation, filtration . d) Sedimentation. sterilisation, filtration 23) Which document contains information about the correct accommodation of pipes in walls and is classed as a statutory document? a) Manufacturer's instructions. b) BS EN 806. c) B5 6700. d) The Water supply Regulations 1999. 24) What type of FOV is shown in the image? a) BS 1212 Part 1 b) BS 1212 Part 2 c) BS 1212 Part 3 d) BS 1212 part 4 25) What type of hot water cylinder is shown in the image? a) An indirect single feed cylinder. b) A direct double feed cylinder. c) A direct twin coil cylinder. d) An indirect single coil cylinder. 26) What are the most important factors to be considered when selecting a type of hot water installation? a) Occupancy, distance to outlets, mains p ressure available. b) Building materials, floor height, size of pipework. c) Local labour availability, floor plan of building, occupancy. d) Owner preference, floor height, weight of cistern. 27) To create reasonable shower pressure, what is the minimum distance from the bottom of the supply cistern to the shower head? a) 0.5 m b) 1 .0 m c) 1 .5 m d) 2.0 m 28) Hot water should be supplied through a thermostatic mixing valve at what outlet temperature (degrees Celsius)? a) 34 °C b) 43 °C c) 50 °C d) 65°C 29) What is checked during commissioning at the appliance to ensure pipe sizes are correct on a hot water system? a) Pressure and flow rate. b) Pressure and expansion rate. c) Flow rate and discharge rate. d) Temperature and turbulence. 30) What is the benefit of a system that has secondary circulation? a) It prevents water wastage. b) It reduces the installation costs. c) It increases the pressure at the appliance. d) Smaller diameter pipes can be used. 31) Which of the following fuels is classed as being a renewable fuel source? a) Biomass. b) LPG c) Natural gas d) Coal. 32) What is the maximum notch depth if a joist is 150 mm deep? a) 22.75 mm b) 20.75 mm c) 15.75 mm d) 18.75 mm 33) Which component on a sealed central heating system accommodates the expansion of water when it is heated? a) Expansion relief valve. b) Expansion vessel. c) Pressure gauge. d) Cistern 34) What is the correct source of information to ensure the correct radiator is installed in the correct room of a building? a) Radiator· schedule. b) Specification drawing. c) Manufacturers instructions. d) Bill of quantities. 35) Why are radiators best hung at 150 mm off the floor? a) To allow air circulation around the radiator b) Prevent radiator valves resting on the floor c) So scurting boards can be painted d) To allow cleaning underneath

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