1) A system of pipework has a static head of 11.6m. What is the pressure acting upon the lowest part of the system? a) 11.6 bar b) 11.6 pascals c) 116,000 pascals d) 10.6 bar 2) Which of the following examples of pipe installation would result in the best flow rate? a) 3m of 22mm pipework with five elbows b) 3m of 15mm pipework with five elbows c) 3m of 22mm pipework with five pulled bends d) 3m of 15mm pipework with five pulled bends 3) What charge does a proton carry? a) Positive charge b) Negative charge c) Alternating positive to negative charge d) Neutral charge 4) How is current correctly defined? a) The number of electrons flowing per second b) The number of neutrons flowing per second c) The difference in electron concentration d) The potential difference within a circuit 5) To determine the current within a circuit, which calculation is used? a) Watts/Volts b) Watts/Ohms c) Volts/Watts d) Ohms/Volts 6) Which types of taps typically require a single check valve to protect against backflow from cross-connection with fluid category 2 water? a) High neck pillar tap b) Bib tap c) Bi-flow mixer tap d) Mixer tap 7) A kitchen sink uses which of air gap between the spillover level and the tap outlet? a) AUK2 b) AUK3 c) AG d) AA 8) What is the minimum head requirement for a gravity-fed shower? a) 150mm b) 750mm c) 1,000mm d) 1,150mm 9) A cold water storage cistern requires a wooden base for support. If the cistern base measures 1,000mm x 800mm, what (minimum) dimension should the (wooden base be cut at? a) 1,000mm x 800mm b) 1, 150mm x 950mm c) 1,300mm x 1,100mm d) 1,500mm x 1,300mm 10) After disinfection of a cold-water system, it is found that the residual chlorine level is 35ppm. What actions should be taken? a) The system should be drained and flushed with drinking water b) Disinfection process repeated to ensure a chlorine level no less than 50ppm c) The system should be flushed with an inhibitor d) Disinfection process repeated to ensure a chlorine level no less than 70ppm 11) Which British Standard is used alongside BSEN806 and covers the design, installation, testing, and maintenance of servicing supplies for domestic use? a) BS8558 b) BS8000 c) BS12056 d) BS1212 12) What backflow prevention device is being used to protect the wholesome water against contamination in this shower valve? a) Double check valve b) AUK2 air gap c) Single check valve d) RPZ valve 13) What air gap is used at a kitchen sink to protect category 1 water? a) AUK1 b) AUK2 c) AUK3 d) AG 14) What must happen to any open-ended pipework when a system is being decommissioned? a) It should be labelled 'not in use' b) It should be capped off c) It should be re-connected to the appliance d) The customer should be advised not to use it 15) What chemical is used in the disinfecting process of a hot water system? a) Sodium peroxide b) Sodium hypochlorite c) Hydrochloric acid d) Caustic soda 16) By which processes do radiators give out 70% of their heat? a) Conduction b) Convection c) Radiation d) Emission 17) Separate space heating zones are required in dwellings where the floor area is greater than... a) 150m2 b) 180m2 c) 200m2 d) 500m2 18) Which of the following entries best describes the installation in the image below? a) Combination boiler with Y-plan system b) System boiler with Y-plan system c) Traditional boiler with S-plan system d) Open vented boiler with Y-plan system 19) Which valve would you commonly find in a Y-plan system with no bypass? a) Three-port diverter valve b) Zone valve c) Two-port valves d) Three-port mid-position valve 20) A district heating system is feeding a number of high-rise flats. Hydraulic separation is required - how is this achieved within each flat? a) Heat recovery unit b) Ground source heat pump c) Heat interface unit d) Air source heat pump 21) What is the minimum height of an air admittance valve above the highest spillover level? a) 0.5m b) 0.6m c) 1.0m d) 1.2m 22) The situation in the diagram is caused by? a) Loss of trap seal due to capillary action b) Overflow due to over-pressure c) Loss of trap seal due to wavering out d) Overflow due to under-pressure 23) What is the minimum pipe diameter for waste pipework discharging from a washbasin? a) 32m b) 40mm c) 50mm d) 75mm 24) What size flush pipe is used to connect the cistern to the pan in the image? a) 32mm b) 35mm c) 40mm d) 50mm 25) What jointing method, used to join HDPE waste pipework, requires both ends of the pipe to be cut, cleaned, and heated using a hot plate, before being pushed together and allowed to cool? a) Fusion weld b) Solvent weld c) Push fit d) Electrofusion 26) If a rubber jointing seal has dried out, what would be used to lubricate it? a) Grease b) Washing-up liquid c) Silicon grease d) Oil 27) What system does this diagram illustrate? a) Rainwater harvesting b) Rainwater conservation c) Combined system d) Separate system 28) What is this item called? a) Stand-up b) Stand-off c) Stand-out d) Stand-end 29) Where should a stop end outlet be installed? a) In the downpipe after the first connection b) At ground level at the end of the downpipe c) At the mid-point of the gutter run d) At the end of a gutter run 30) Which Building Regulations govern the installation of rainwater systems? a) Part J b) Part H c) Part L d) Part P

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