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WorksheetsPlumbing Quiz Phase 3 C&G - CW. HW, Sanitation & Rainwater Recap
Total questions: 23
Worksheet time: 14mins
How can the cold water supply pressure to a property be identified?
By contacting the local council or using a weir gauge at the kitchen sink
By contacting the local council or using a pressure gauge at the supply to the FOV
By contacting the water undertaker or using a pressure gauge at the cistern-fed outlets
By contacting the water undertaker or using a pressure gauge at the kitchen sink
What term is given to the length of pipe when all fittings and components are considered during pipe sizing?
Equivalent length
Actual length
Mean length
Velocity length
What is the recommended storage capacity of a CWSC supplying cold and hot water to a house?
100 litres minimum
150 litres minimum
230 litres minimum
350 litres minimum
Which of the following factors would not directly affect the pressure and flow rates of pipework?
Pipe diameter
Pipe material
Number of bends
pH level of the water supply
A boosted cold water system is fitted with a break cistern at low level and a storage cistern at high level. The pump seems to have seized after 'running dry' for some time. What control component within the system is most likely to have failed and allowed this to happen?
Float operated valve within the storage cistern
Float operated level shut-off switch within the storage cistern
Float operated valve within the break cistern
Float operated low level shut-off switch within the break cistern
How often should a CWSC be checked for contamination and general condition within an apartment block?
Monthly
Quarterly
Half yearly
Annually
A sentinel outlet may be described as:
a tap at the mid-position within a system
the taps at the furthest and closest locations to the supply
the taps at the highest and lowest points
A tap outlet which is operated the least frequently
What activities should be carried out on a boost cold water or shower pump?
Maintenance activities, as directed by manufacturers' guidelines
None – most pumps are hermetically sealed and do not require nay maintenance
Pump seals replaced and drive shafts lubricated annually
Impeller cleaned and pump vented half yearly
Between what temperatures does the bacteria Legionella multiply?
15c–35c
20c-25c
20c-45c
25c-35c
Identify the item shown here?
Cylinder Stat
Boiler Thermostat
Immersion Heater Stat
Room Stat
At what temperature should the hot water in a hot water cylinder be stored at?
40c
50c
60c
70c
Identify the item shown here.
Flow Reducing Valve
Pressure Regulating Valve
Thermostatic Mixer Valve
Thermostatic Regulating Valve
In a new build domestic property, where should a TMV be fitted?
Prior to every hot water outlet
Prior to every hot water cylinder
Prior to a bath
Prior to a shower
Which of the following statements is true?
D1 must be 600mm max before first elbow
A tundish is a device placed close to the pressure release valve that allows people to see if water has escaped the system due to excessive water pressure.
D2 must be one size bigger than D1
D2 must have a continuous fall
How much does water expand by when it is heated between 4c and 99c?
4%
5%
10%
8%
What units does a weir cup measure in?
Bar
Millimeters
Litres per minute
Degress centigrade
When carrying out maintenance on an appliance, which document should be followed?
Approved document Part G
BSEN806
Manufacturer's instructions
BS8000
What is the maximum distance between clips on a rainwater gutter?
1.5m
1m
2m
1.8m
If the rainwater system is installed in a windy and exposed position, what should you do to the facia brackets?
The should be replaced with metal clips
The should be secured with stainless steel screws
There is nothing you need to do
They should be installed closer than 1m apart
Identify this type of stack system
Primary ventilated stack
Secondary ventilated stack
Ventilated discharge branch stack
Stub stack
Identify the item shown here
Inline filter
Y-Strainer
Water softener
Magnetic filter
What is the purpose of a magnetic filter?
Prevents corrosion and sludge forming
Maintains efficiency because it keeps pumps and heat exchangers clean
Prolongs the life of the boiler
All of the above
What is your favorite fast food brand?
