1) What temperature is 373K in the Celsius scale? a) 173°C b) 100°C c) -173°C d) -200°C 2) What does the symbol Δt represent? a) Difference in temperature b) Direct temperature c) Difference in pressure d) Direct pressure 3) When a gas changes state into a liquid, it is known as ... a) Evaporation b) Condensing c) Sublimation d) Expansion 4) When a liquid changes state into a gas, it is known as ... a) Evaporation b) Condensing c) Sublimation d) Expansion 5) What is atmospheric pressure at sea level? a) 0 bar b) 1.01 bar c) 10.1 bar d) 100 bar 6) An RPZ valve should be installed with: a) an isolating valve upstream of the RPZ valve b) an isolating valve downstream of the RPZ valve c) an isolating valve both upstream and downstream of the RPZ valve d) no isolating valves 7) In which one of the following fluid categories does the domestic water from a washbasin fall? a) Category 1 b) Category 2 c) Category 3 d) Category 4 8) Under Regulation 5 of the Water Regulations, the water undertaker must be informed when which one of the following operations is carried out? a) Installation of a pump drawing more than 12 litres per minute b) Installation of a bidet without an ascending spray or flexible hose c) Installation of a bath with a capacity of fewer than 230 litres d) Installation of an RPZ valve to protect against a category 2 fluid 9) What is the component labelled A in the diagram below? a) Expansion cistern b) Break cistern c) Duplicate pumps d) Circulating pumps 10) The type of non-mechanical backflow prevention used on a domestic washbasin is known as: a) AVK 1 b) AUK 2 c) AUK 3 d) AUK 4 11) Where on a domestic hot water cylinder should the cold feed be connected? a) Bottom b) Top c) Middle d) A third of the way up 12) What sort of tap would be best suited for an elderly person with arthritis? a) Bib tap b) Long neck pillar tap c) Non-rising tap d) Quarter turn tap 13) What is meant by the term 'heat recovery'? a) The time taken for the boiler to get to temperature b) The time taken to heat up a full cylinder of hot water c) The time take for the primaries to start heating the cylinder d) The time taken for the cylinder thermostat to activate the boiler 14) What does this diagram show? a) Electric shower b) Double impeller shower c) Gravity shower d) Single impeller shower 15) What does WRAS stand for? a) Water Revival Advanced Scheme b) Winter Regulations and Spring c) Water Regulations Advisory Scheme d) Water Ripples and Systems 16) Which one of the following Building Regulations discusses the control of heating systems within new-build dwellings? a) Part L 1a b) Part L1b c) Part L2a d) Part L2b 17) Which one of the following describes the purpose of background heating? a) Heat the property quicker than full central heating b) Heat only certain rooms in the property, as required c) Heat the property to a lower temperature than full central heating d) Heat the property to a higher temperature than full central heating 18) Identify the type of heating system shown in the image below. a) Open vented S-plan system b) Sealed S-plan system c) Open vented Y-plan system d) Sealed Y-plan system 19) An automatic bypass valve is activated by which action? a) Boiler shutting off b) Programmer being switched on c) Pressure created within the system d) Pressure of the incoming water service 20) The main reason a radiator should be installed 150mm above floor level is to ... a) Reduce the risk of fire b) Allow the heat to circulate c) Protect the flooring from possible leaks d) Allow easier access for maintenance work 21) The diagram below shows which type of drainage system? a) A combined system b) A partially combined system c) A separate system d) A partially separate system 22) What is the maximum distance allowed from the highest waste connection to the invert of the drain on a stub stack system before ventilation is required? a) 1.6m b) 1.8m c) 2m d) 2.5m 23) A waste pipe discharging into a ground level gully should do which of the following? a) Discharge over the grate b) Discharge through the grate but above the water level of the trap seal c) Discharge adjacent to the grate d) Discharge through the grate and below the water level of the trap seal 24) If a 4m length of soil pipe had a fall of 18mm per metre, what would the vertical drop be at the end of the pipe run? a) 180mm b) 110mm c) 418mm d) 72mm 25) The image below shows a fixing which would be used in the installation of which appliances? a) A wall hung WC b) A washbasin fixed to a wall without a pedestal c) A combined towel hook and cup holder d) A shower unit with hose loop 26) Which one of the following is a style of plastic guttering? a) Elsan b) Mansard c) Ogee d) Half channel 27) Which one of the factors listed needs to be considered before the installation of a rainfall system? a) The height and shape of the building b) The type of roof covering that the property has c) The roof area and direction of fall d) What type of drainage system the building is connected to 28) How can you check a gutter and downpipe for soundness and performance? a) Wait until it rains, then climb up to look b) Pour water into the gutter and inspect the system for ponding and leaks c) Ask the customer to let you know if they see any leaks d) Join the system together before installation and inspect for leaks 29) What is another term for the offset from a gutter to downpipe? a) Cranked turn b) Direco-change c) Goose neck d) Swan neck 30) What is a common downpipe diameter? a) 68mm b) 50mm c) 72mm d) 32mm

Plumbing Phase 2 mock 1

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