WorksheetsGMJ 9189 FULL Phase 1 end of phase mock questions
Total questions: 134
Worksheet time: 1hrs 7mins
Which of the following materials is not suitable for a domestic cold water system?
R250 copper
Polybutylene pressure pipe
R220 copper
Low carbon steel
Which grade of low carbon steel is used for central heating systems?
Red
Blue
Brown
Green
What do the Water Regulations state about the use of lead in cold water systems?
Lead must not be used on cold or hot water systems
Lead can be installed if the customer is informed
Lead can only be used on cold water systems but not on hot water systems
Lead must be installed with care
Identify into which fitting an olive is used to create a watertight joint.
compression
press fit
push fit
solder ring
What type of drill is this?
Cordless Drill
Combi Drill
Core Drill
SDS Power Drill
What is the maximum depth to which a notch can be cut?
0.007S
0.125D
0.25D
0.375S
Which building regulation do notching and drilling of joists come under?
Approved Document P
Approved Document L
Approved Document H
Approved Document A
Where would a plumber use a mirror screw?
Securing floorboards
Attaching a bath panel
Securing a clip
Attaching a pump
What type of material would this fixing be used on?
Wood
Masonry
Plasterboard
Metal
When using a munsen ring to secure pipework in position, which of the following statements is important to follow?
Copper pipe must be secured in a cast iron munsen ring
Low carbon steel must be secured in a brass munsen ring
Brass munsen rings must be used on copper pipework
Cast iron munsen rings can secure any material
What is the horizontal clipping distance for 15mm copper pipework?
1000mm
1200mm
1250mm
1750mm
What must be installed when pipework passes through a wall?
Extra clips either side of the wall
A sleeve to protect the pipework from damage
A non-conductive fitting to avoid electric shocks
A length of polybutylene to allow for expansion
What does an intumescent collar prevent?
Fire from spreading in a building
Contamination in a water system
Over-tightening of a compression joint
Expansion and contraction when heated
What is installed at the second fix stage of an installation?
pipework
clips
appliances
insulation
Which British Standard outlines the thickness of insulation required in a domestic property?
BS8056
BSEN12058
BS1010
BSEN806
The UK has a healthy annual rainfall which varies from region to region across the nation. Without the correct rainwater system installed, the rain can damage existing buildings, but not by:
penetrating buildings
eroding the ground
corrosion of the glass
affecting building foundations
Which is not an important principle of any rainwater system... "to control and remove the rainwater so that...........?":
it does not cause a nuisance for the building occupier
it does not cause a nuisance for the water undertaker
it does not damage neighbouring buildings.
it does not damage the building foundations
Which is not correct?
"Rainwater systems are designed so that the rainwater....":
Is discharged in a downpipe.
is collected in the gutter
runs off the roof line
drains directly into the cold water cistern
Which source of information states the statutory requirements for a rainwater system?
Building regulations Part L1a
Building regulations Part H3
Building regulations Part G2
Building regulations Part F1
Which source of information offers guidance about the installation of a rainwater system?
BS EN 6700 Part 3
BS EN 8558 Part 3
BS EN 12056 Part 3
BS EN 1212 Part 3
What is rainfall intensity measured in?
Litres/second/meter2
Litres/minute/meter3
Gallons/hours/foot2
Pints/minute/foot3
What is the ratio of fall that BS EN 12056 Part 3 states should be in place for a gutter system to work correctly?
1:800
1:700
1:600
1:500
Which is not one of the five areas where rainwater can be discharged to.
A rainwater harvesting system
Surface water drain
Combined sewer
A private drinking water supply
A watercourse
Which of the following is not a profile of guttering?
Ogee
Half-round
Square-line
Fast-flow
Deep-flow
Which of the following does not influence the choice of guttering profile to be used?
Location and rainfall
BSEN1212
Customer and architect preferences
Existing Guttering
Roof area and pitch
What heating system uses a difference in the density of water to circulate heat to a hot water cylinder?
Y plan
Gravity fed
S plan+
Hypocaust
The conservation of fuel and energy is covered by which approved document?
Building regulations part P
Building regulations part M
Building regulations part H
Building regulations part L
What is the main purpose of a central heating system?
To heat up the core of the building
To provide thermal comfort to a property
To supply heating to a single room
To provide heat to a number of properties
What is at the highest point of a vented heating system?
Expansion vessel
Feed and expansion cistern
Cold feed isolation valve
Automatic air vent
What is the primary function of the open vent on a central heating system?
To allow the system to pressurise
To allow the system to operate at atmospheric pressure
To provide sufficient oxygen to the heating system
To provide a means of ventilation when filling the system
What type of heating system incorporates a three-port valve that gives priority to the hot water system?
Y plan
S plan
S plan+
W plan
What three components are required when converting an open vented system with a sealed system?
Automatic air vent, low loss header, filling loop
Filling loop, expansion vessel, pressure gauge
Pressure relief valve, filling loop, expansion vessel
Expansion vessel, automatic air vent, pressure gauge
What is the name of the component shown?
Mixer Bar
Manifold
Bypass Valve
Low loss header
What type of heating system charges using low-cost off-peak tariffs?
District
Warm Air
Y-plan
Electric Storage
What type of heating system can be split into zones that serve a cluster of houses and buildings?
District
Underfloor
Microbore
Siphonic
1. What is the maximum depth at which a water main service pipe should be laid at?
750mm
1000mm
1250mm
1350mm
Fluid category 1 represents:
a serious health risk
a slight health risk
a significant health risk
no risk
Which one of the following water pipes connects the local main to the water undertaker’s stop valve?
The distribution pipe
The communication pipe
The feed pipe
The service pipe
The plastic medium density supply pipe, which is coloured blue, is manufactured from which one of the following materials?
Polyethylene
Polystyrene
Polypropylene
Polybutylene
Which one of the following is the minimum depth at which a water main service should be laid?
1350mm
1000mm
750mm
500mm
Which one of the following can affect the pressure and flow rates to the incoming main to a property?
Peak demand periods
The size of the CWSC in the loft
The square metre floor area of the property
How close the water meter is to the property
Water which is from underground sources and has passed through sandstone will generally be classed as which type of water?
Very soft water
Soft water
Temporary hard water
Permanently hard water
Fluid category 3 represents:
A slight health risk
A serious health risk
A significant health risk
no risk
1. Which of the options listed does the passage below describe?
‘Man-made wells drilled directly to a below ground water source.’
Artesian well
Borehole
Natural spring
Deep well
Water from a hot water outlet is classified as which water category?
1
2
3
4
What type of cold water system is pictured ?
Direct cold water system
Indirect boosted cold water system
Indirect cold water system
Direct boosted cold water system
Water undertakers may allow direct boosting from their main, providing:
the demand is above 0.5 litres per second
the demand is above 0.2 litres per second
the demand is below 0.2 litres per second
the demand is below 0.5 litres per second
In a direct boosted cold water system, what device turns the pump on and off?
A pipe level switch
A pressure switch
A float switch
A flow switch
In an indirect boosted cold water system, what is the name of the low level cistern which is filled by the cold water main?
Feed and expansion cistern
Cold water storage cistern
Spill cistern
Break cistern
Which of the following is not a stated objective of the Water Supply (Water Fittings) Regulations 1999?
The prevention of waste
The prevention of precipitation
The prevention of undue consumption
The prevention of misuse
Who is directly responsible for the collection, treatment and distribution of water to the consumer?
Water undertaker
Local government
DEFRA
WRAS
What is the name of the pipe which connects the cold water from the property boundary into the property?
Service pipe
Distribution pipe
Sparge pipe
Communication pipe
Temporary hard water can be described as water which contains excessive amounts of which of the following?
Calcium sulphate
Calcium carbonate
Chlorine
Carbon dioxide
Where are the statutory requirements for the installation of drainage systems?
BS 6700
BS EN 12056
Building regulations
WRAS
Identify this type of stack system.
Primary ventilated stack
Secondary ventilated stack
Ventilated discharge branch stack
Stub stack
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?
54mm
18mm
36mm
72mm
What is the purpose of the component shown, when installed at the base of the stack?
To prevent evaporation
To prevent backflow
To prevent expansion
To prevent compression
The maximum recommended length of a discharge pipe from a bath connected to a primary ventilated stack is:
3 metres
4 metres
5 metres
6 metres
What is the recommended termination, as per building regulations, for a soil stack inside a building?
Open ended
Cowl
Domical cage
Air admittance valve
What is the minimum sized waste that is allowed to be fitted to a wash basin?
32mm
40mm
50mm
110mm
What is the main purpose of a ventilated branch pipe?
To prevent odours from the waste of the appliance
To prevent positive and negative pressure fluctuations
To reduce the velocity of the waste water
To prevent compression
What is recommended to stop cross-flow in a soil stack opposite a WC?
Boss strap
No connections for 100mm
Air admittance valve
No connections for 200mm
If an air admittance valve is located within some boxing, what is required to allow the valve to operate effectively?
Access from the loft area
Additional ventilation in the boxing
The boxing must be sealed
Only one appliance can be discharged at any one time
An air admittance valve fitted to a stub stack helps to prevent what?
Compression
Capillary action
Trap seal loss
Stabilisation
What is the most suitable application for the trap in the image shown?
Urinal
basin
kitchen sink
bath
What is the minimum trap seal depth for a WC pan, when connected to a primary ventilated stack?
38mm
50mm
90mm
110mm
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?
1.6m
1.8m
2.0m
2.2m
A ventilation stack is installed 3.5m away from an openable window. At what minimum distance above the window should it terminate?
600mm
900mm
It cannot terminate more than 3m away from the window
There is no minimum height above the window at that distance
What device, fitted to the top of sanitary pipework, allows air into a system but does not allow foul smells to escape?
Waterless valve
Neoprene membrane
Cage terminal
Air admittance valve
What component is shown in the image?
Waterless valve
In-line trap
Air admittance valve
Bottle trap
What component is shown in the image?
Waterless valve
In-line trap
Air admittance valve
S trap
Which building regulation deals with the installation of sanitary pipework?
J
F
L
H
Within a secondary ventilated stack system, what is the minimum diameter of the main stack or of any dry part of the primary ventilating stack?
50mm
75mm
150mm
600mm
1. A secondary ventilated stack system is installed within an apartment building of four floors. What is the minimum stack diameter required?
40mm
75mm
100mm
150mm
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?
Quantity surveyor
Clerk of works
Architect
The joiner
Which one of the following is responsible for designing electrical and mechanical services?
Site engineer
Structural engineer
Building surveyor
Building services engineer
Which one of the following would most likely be employed by the local authority?
Quantity surveyor
Structural engineer
Building control officer
Water inspector
Which one of the following would not be found in manufacturer’s instructions?
Servicing requirements
Commissioning procedures
Cost of replacement parts
Appliance dimensions
Which one of the following details the rough cost of proposed work?
Restraining Order
Variation order
Purchase order
Estimate
Which one of the following pieces of information would be most suitable to be communicated via a text message?
An appointment time for visiting a customer
The position where a new radiator will be installed
A quotation for installing a new bathroom
An estimate of the cost for proposed work
A British Standard is best described as:
a piece of legislation which has been approved by the HSE
a piece of legislation which has been approved by the government
an expected standard which should be followed by law
an expected standard which should be adhered to but is not law
Which one of the following employee dress codes would promote the most positive company image?
Clean overalls carrying the company name and logo
Jeans and T-shirt
Trousers, smart shirt and tie
No formal dress code
Which one of the following is most likely to contribute to creating a positive image of the plumbing company to the customer?
Extended lunch breaks on site
Punctual start and finish times
Getting the job done as quickly as possible
Leaving the job to attend a breakdown
Verbal communication consists of:
speaking and listening
speaking and writing
listening and looking
listening and recording
Which one of the following is considered the most formal method of communication?
Face-to-face conversation
Telephone conversation
Written letter
An advantage of communicating verbally with a customer rather than writing a letter is that verbal communication:
is a more formal method of communication
is a quicker method of communication
provides a permanent record of the communication
is less open to misinterpretation
Which one of the following correctly describes the process of arbitration?
Impartial advice about conflict at work
A method of resolving disputes outside the courts
An informal meeting to settle disputes between colleagues
Taking an employer to court to settle a dispute
Which one of the following organisations provides impartial advice about dealing with conflict at work?
HGV
HSE
ACAS
BPEC
Verbal communication should be supported by written communication when dealing with a customer:
with impaired hearing
with impaired vision
with learning difficulties
who doesn’t speak the same language as you
A Level 2 qualified operative can:
work on their initiative with no supervision
work on their initiative with some supervision
supervise apprentices on site
only work under full supervision
Which one of the following sources of information must the operative hand over to the customer after installing a new boiler?
Operating instructions for the newly installed boiler
Mounting template for the newly installed gas boiler
A copy of the timesheets for plumbers working on a new-build site
A list of materials, including pipe fittings, used on an installation
Which building regulation covers sanitation, hot water safety and efficiency?
Part A
Part B
Part P
Part G
Which one of the following documents is legally binding?
A work programme
An estimate
A building contract
Job specification
According to the Consumer Contracts Regulations, a consumer has the right to cancel a contract, providing they do that within:
the first 24 hours
the first 48 hours
seven days
14 days
Who is described in the passage below?
A client who represents the occupant of a property: they are a link between the occupant and the subcontractor, and ensure that the most suitable contractor is contacted to carry out work on their behalf.
Private customer
Contracting customer
Managing agent
Internal customer
Good, clear communication between client and contractor is most likely to lead to:
Repeat business, improved reputation and smoother projects
Increased profit margins, increased staff turnover and larger bonuses
More followers on social media and faster job completion
Improved reputation, decreased business and larger bonuses
What is the final step to consider regarding risk assessment?
Record your findings
Decide who might be harmed
Review your assessment and update
Evaluate the risks
What type of risk assessment uses a risk calculation formula to calculate the risk rating?
Quantitative approach
Qualitative approach
Quarterly approach
Quality approach
Which factors are most likely to be considered when planning a programme of work for a project?
Labour availability, delivery of materials and parking facilities for tradespeople
Health and safety, availability of food and refreshments for tradespeople, and parking facilities
Provisions for storage, availability of apprentices and average temperatures
Delivery of materials, health and safety, and time allocations
Describe an alloy.
Very light metal
Mixture of two or more metals
Lead Character in Horizon -Zero Dawn
A metal - specifically used for electrical fittings
What is the specific gravity of butane in relation to air??
0.6
1.0
1.5
2.0
What material is a sacrificial anode typically made of ?
Magnesium
Lead
Copper
Aluminium
Name the process of protecting steel from rusting by coating it with a thin layer of zinc.
Dezincification
Electrolysation
Galvanisation
Oxidisation
What is the scientific name given for the rainwater cycle?
Urban cycle
Hydrological cycle
Re-cycle
Long wash cycle
When water is turned into steam, approximately how much will be produced from 1m3 of water?
10m3
16m3
160m3
1,600m3
What numbers identify the pH of pure water on the potential hydrogen scale?
12
1
6-7
-273
At what temperature is water when at its most dense?
–100C
00C
20C
40C
Which law states that the rise in pressure (of gas) would be inversely proportional to the rise in temperature?
Boyle’s law
Cole’s law
Charles’s law
The Gas law
Which ancient mathematician designed a simple screw-type mechanism which, when rotated, can lift water from a lower to a higher level?
Einstein
Archimedes
Plato
Grunfoss
There are seven base units: name the unit for temperature which determines absolute zero as –2730C.
Fahrenheit
Celsius
Degree
Kelvin
How is acceleration measured in SI units?
Miles per hour
Metres per second
Metres per second squared
Metres per minute cubed
Which SI unit determines the flow rate of a hot water tap?
l/m
g/m
l/s
m/s
How much will water expand when heated up to approx. 820C (central heating circuit)?
4%
7%
8%
10%
What pressure would there be at the outlet of a tap if it was located 10m below the base of a cold water storage cistern (CWSC)?
10 bar
1 bar (100kPa)
10 bar (10 nm3)
100 millibar
Convert 14.22 pounds per square inch (psi) into bars and kilopascals (kPa).
1 bar (100kPa)
0.1 bar (10kPa)
0.5 bar (40kPa)
0.5 bar (40kPa)
What units of gas will be displayed on a domestic metric gas meter?
ft3/h
m2
m3/h
Btu/m3
What type of plastic is commonly used for the underground water mains and the service pipe to a domestic property?
PVCu
MDPE (medium density polyethylene)
Polybutylene
Polypropylene
What term is used to describe the ability of a material which can be reshaped without breaking?
Conductivity
Malleability
Ductility
Tensility
Why will LPG sink to the floor when released to atmosphere?
It has a natural tendency to be drawn to Earth because of its carbon content
The relative density of propane and butane is greater than 1
Global warming
The effect of wind currents is greater than the pressure of the gas when released
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.
15mm
22mm
28mm
110mm
What is the recommended temperature setting for the thermostat to an immersion heater in a hot water storage cylinder?
50ºC
60ºC
70ºC
84ºC
Which type of hot water storage cylinder is shown in this diagram?
Direct cylinder
Primatic Cylinder
Double feed indirect cylinder
Single feed indirect cylinder
A hot water storage cylinder heated by an immersion heater only is considered to be what type of hot water storage system?
Direct
Indirect
Primatic
Instantaneous
When water is heated in a hot water storage cylinder, stratification will occur. Which of the following best describes stratification?
The hottest water is in the middle of the cylinder; the coldest water is at the top and bottom of the cylinder
The coldest water is at the top of the cylinder and the hottest water is at the bottom of the cylinder
The coldest water is in the middle of the cylinder; the hottest water is at the top and bottom of the cylinder
The hottest water is at the top of the cylinder and the coldest water is at the bottom of the cylinder
The recommended minimum size of primary circulation pipework between a small (under 35kW) solid fuel boiler serving a direct hot water cylinder only is:
15mm
22mm
28mm
110mm
What is the electrical power rating of a typical domestic immersion heater?
3kW
3.7kW
4kW
7.5kW
The difference between a single feed and a double feed indirect cylinder is:
the single feed cylinder requires a booster pump
the single feed cylinder does not need a separate feed and expansion cistern
the single feed cylinder requires a twin port motorised valve arrangement
the single feed cylinder does not require an open vent pipe to the secondary storage cistern
What type of cylinder is shown in the picture?
Single feed indirect cylinder
Direct cylinder
Combination cylinder
Unvented cylinder
Where should the primary open vent pipe in a double feed indirect hot water system terminate?
Over the cold water storage cistern
Over the feed and expansion cistern
To the outside of the property
In an expansion relief valve
An unvented cylinder has a range of safety controls to prevent hot water reaching which temperature?
90ºC
60ºC
4ºC
100ºC
Which system works in a similar way to an indirect cylinder, except in reverse?
Unvented cylinder
Thermal store unit
Direct cylinder
Combination unit
What type of boiler provides instantaneous hot water to multiple outlets, as well as central heating, and is known as a hot water priority system?
Condensing boiler
Electric boiler
Combination boiler
Combination cylinder
Name the hot water appliance which is commonly used to provide hot water to a remote basin/sink, which is located too far away from a DHW storage vessel.
Gas or electric single point heater
Smaller DHW storage vessel
Combination cylinder
Secondary circulator
A plastic feed and expansion cistern must be:
fully supported across its entire base
supported on a single beam
supported on at least two beams
rested on a first-floor plasterboard ceiling
