1) Which of the following materials is not suitable for a domestic cold-water system? a) R250 copper b) Polybutylene pressure pipe c) R220 copper d) Low carbon steel 2) Which grade of low carbon steel is used for central heating systems? a) Red b) Blue c) Brown d) Green 3) What do the Water Regulations state about the use of lead in cold water systems? a) Lead must not be used on cold or hot water systems b) Lead can be installed if the customer is informed c) Lead can only be used on cold water systems but not on hot water systems d) Lead must be installed with care 4) Identify the equal tee compression fitting. a) b) c) d) 5) Which of these fittings is a waste pipe fitting? a) b) c) d) 6) Describe an alloy. a) Very light metal b) mixture of two or more metals c) Aluminium d) Metal specifically used for electrical fittings 7) What is the specific gravity of butane in relation to air? a) 0.6 b) 1 c) 2 d) 1.5 8) What material is a sacrificial anode typically made of? a) Magnesium b) Lead c) Copper d) Aluminum 9) Name the process of protecting steel from rusting by coating with a thin layer of zinc. a) Dezincification b) Electrolysation c) Galvanisation d) Oxidisation 10) What is the scientific name given for the rainwater cycle? a) Urban cycle b) Hydrological cycle c) Water table d) H2O 11) What is the maximum depth at which a water main service pipe should be laid at? a) 750mm b) 1,250mm c) 1,350mm d) 1,750mm 12) Fluid category 1 represents: a) a serious health risk b) a significant health risk c) a slight health risk d) no health risk 13) Which water pipe connects the local main to the water undertaker's stop valve? a) The distribution pipe b) The communication pipe c) The feed pipe d) The service pipe 14) Plastic medium density supply pipe, coloured blue, is made from which material? a) Polyethylene b) Polystyrene c) Polypropylene d) Polybutylene 15) What is the minimum depth a water main service should be laid? a) 1,350mm b) 1, 150mm c) 950mm d) 750mm 16) Which cylinder is a direct cylinder? a) b) c) 17) State the minimum size of open vent pipe which terminates over a cold water storage cistern that is allowed under the Water Regulations for a secondary domestic hot water system. a) 15mm b) 22mm c) 28mm d) 32mm 18) What is the recommended temperature setting for the thermostat to an immersion heater in a hot water storage cylinder? a) 90°C b) 70°C c) 60°C d) 50°C 19) Which type of hot water storage cylinder is shown in this diagram? a) Direct cylinder b) Combination unit c) Double feed indirect cylinder d) Single feed indirect cylinder 20) A hot water storage cylinder heated by an immersion heater only is considered to be what type of hot water storage system? a) Direct b) Indirect c) Electrolytic d) Instantaneous 21) What heating system uses a difference in the density of water to circulate heat to a hot water cylinder? a) Y plan b) Gravity fed c) S plan+ d) Hypocaust 22) The conservation of fuel and energy is covered by which approved document? a) Building regulations part P b) Building regulations part M c) Building regulations part H d) Building regulations part L 23) What is the main purpose of a central heating system? a) To heat up the core of the building b) To provide thermal comfort to a property c) To supply heating to a single room d) To provide heat to a number of properties 24) What is at the highest point of a vented heating system? a) Expansion vessel b) Feed and expansion cistern c) Cold feed isolation valve d) Automatic air vent 25) What is the primary function of the open vent on a central heating system? a a) To allow the system to pressurise b) To allow the system to operate at atmospheric pressure c) To provide sufficient oxygen to the heating system d) To provide a means of ventilation when filling the system 26) Where are the statutory requirements for the installation of drainage systems? a) BS 6700 b) BS EN 12056 c) Building regulations d) WRAS 27) Identify this type of stack system. a) Primary ventilated stack b) Secondary ventilated stack c) Ventilated discharge branch stack d) Stub stack 28) If a discharge branch has a gradient of 18mm per metre and the branch is 3 metres in length, what will the vertical drop distance be? a) 54mm b) 18mm c) 36mm d) 72mm 29) What is the purpose of the component shown, when installed at the base of the stack? a) To prevent evaporation b) To prevent backflow c) To prevent expansion d) To prevent compression 30) The maximum recommended length of a discharge pipe from a bath connected to a primary ventilated stack is: a) 3 metres b) 4 metres c) 5 metres d) 6 metres 31) Which one of the following is responsible for ensuring that the client's requests are being met and work is in accordance with current standards? a) Quantity surveyor b) Clerk of works c) Architect d) Buyer 32) Which one of the following is responsible for designing electrical and mechanical services? a) Site engineer b) Structural engineer c) Building surveyor d) Building services engineer 33) Which one of the following would most likely be employed by the local authority? a) Quantity surveyor b) Structural engineer c) Building control officer d) Water inspector 34) Which one of the following would not be found in manufacturer's instructions? a) Servicing requirements b) Commissioning procedures c) Cost of replacement parts d) Appliance dimensions 35) Which one of the following details the rough cost of proposed work? a) Quotation b) Variation order c) Purchase order d) Estimate

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