1) At what temperature would water boil if subjected to 3 bar of pressure? a) 100°C b) 110°C c) 123°C d) 143°C 2) What term does the following sentence describe? The energy used to change the state of a substance which is released during evaporation. a) Sensible heat b) Total heat c) Latent heat d) Specific heat 3) Which of the following equations describes a Joule? a) 1k J/s b) 1W/s c) 1Nm d) 1W/m 4) What is the specific heat capacity for water under atmospheric conditions? a) 1k j/kg/°C b) 3.14kj/kg/°C c) 4.18kj/kg/°C d) 9.18kj/kg/°C 5) Select the correct equation to calculate the linear expansion within a 10m length of copper pipe if it was heated by 30°C. a) 3.14 X 10 X 30 b) 10 X 30 X 0.000016 c) 30 / 10 X (0.000011) d) 4.18 x 30x 10 6) Which of the following items of legislation covers the requirements for the hydraulic testing of cold water pipe lines? a) Water Byelaws (England 2004) b) British Standards 5449 c) Water Supply (Water Fittings) Regulations 1999 d) Building Regulations Part G (P in Northern Ireland) 7) Which one of the following mechanical backflow prevention devices would be used when installing a replacement hose union bib tap? a) BA b) HUK1 c) HA d) HC 8) Which one of the following types of air gap provides suitable backflow protection for the taps in a washbasin installed in a hospital? a) AB air gap b) AUK 1 air gap c) AUK 2 air gap d) AUK 3 air gap 9) Service valves should be installed in which one of the following locations. a) On the cold feed to the primary circuit b) On the cold feed pipe from the cold-water storage cistern c) Immediately after the internal stop valve d) Immediately after the external stop valve 10) Metallic cold-water systems should be capable of withstanding an internal pressure of: a) the maximum potential operating pressure b) 1.5 times the maximum potential operating pressure c) 2 times the maximum potential operating pressure d) 3 times the maximum potential operating pressure 11) If there is a faulty full way gate valve in the system, what should you do? a) Replace the back nut to release the fault b) Replace the body of the valve and leave the head gear c) Lubricate the body to release the fault d) Replace the whole valve 12) Which is the best description of category 1 water? a) Water stored at 60°C b) Wholesome water c) Water that offers a slight health risk d) Water that has a mild chemical added 13) What device is used to protect category 1 water from being contaminated by category 2 water? a) RPZ valve b) AUK1 air gap c) Single check valve d) AG air gap 14) If a hot water appliance had a fault, where would you look for guidance? a) BSEN806 b) The Water Supply (Water Fittings) Regulations c) The manufacturer's instructions d) Building Regulations Part L 15) Which Building Regulation states that one of these valves must be fitted before the outlet on any new bath fitted? a) Part H b) Part L c) Part G d) Part P 16) A thermostatic radiator valve opens and closes from the temperature of the ... a) Primary circuit b) Boiler c) Space it's installed in d) Return pipework 17) A pump should be positioned so that the heating system is operating under. .. a) No pressure b) Positive pressure c) Negative pressure d) Both positive and negative pressures 18) An automatic air vent should be positioned at the ... a) Highest part of the system b) Lowest point of the system c) Point where the vent enters the system d) Point where the cold feed enters the system 19) Which one of the following central heating systems uses a manifold? a) One-pipe system b) Two-pipe system c) Microbore system d) Gravity pipe system 20) Installing an air separator allows which one of the following to take place? a) Close coupling of the cold feed and vent connections b) Close coupling of the flow and return connections c) Close coupling of the pump and the vent connections d) Close coupling of the motorised valve connections 21) What are the maximum flushes for a WC? a) 4 litres short flush and 6 litres long flush b) 10 litres long flush and 6 litres short flush c) 9 litres long flush and 6 litres short flush d) 3 litres short flush and 5 litres long flush 22) An ascending spray bidet can be described by which of the following sentences? a) A spray entering the appliance, from a tap, from above the rim of the bidet b) A spray entering the bidet from the side of the appliance c) A spray entering the area of the bidet from a high level d) A spray entering the bidet from the base of the appliance 23) What type of we pan is shown in the image? a) Wash down with double trap b) Siphonic with an overflow c) Wash down with single trap d) Siphonic with a double trap 24) Which of the following should be the minimum diameter of a kitchen sink waste discharge pipe? a) 32mm b) 40mm c) 50mm d) 65mm 25) A self-sealing valve is designed to operate in which way when under back pressure? a) Remain tightly closed b) Always remain open c) Occasionally open d) Remain in the mid-position 26) In a rainwater system, what is the normal ratio of fall for the gutter? a) 1 :400 b) 1 :60 c) 1 :2,000 d) 1 :600 27) On domestic properties, what is the maximum distance at which the facia brackets should be apart? a) 1.25m b) 1,500mm c) 1,000mm d) 1.8m 28) Which one of the following is an advantage of plastic guttering systems? a) Flexible and low maintenance b) It only requires painting every two years c) Running outlet connections can be made on every elevation d) Expansion is taken up in caulked joints 29) Which of the following is a downpipe fitting? a) Slipper b) Boot c) Shoe d) Belt 30) When fitting plastic guttering, where is the allowance for expansion and contraction made? a) At the running outlet connections b) Every 1 Orn where there is an expansion and contraction connection c) At the corner connections only d) In each of the fittings

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