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WorksheetsElectrical Principles 6035-02 | Part 3
Total questions: 40
Worksheet time: 21mins
Which plan would have the following wired in? Programmer, cylinder/room stat, pump, 1x three port valve.
S - plan
Y - plan
The image shown here is?
Socket ring main
Lighting ring main
Lighting circuit
Ring final circuit
Which type of cable would small electric showers(7kW) use?
1.5mm twin and earth
2mm twin and earth
6mm twin and earth
10mm twin and earth
Of the following, select the double socket.
The flow of electricity through both the live and neutral conductor can be turned off by using?
Double pole switches
Single pole switches
MCBs
Ring circuits
Which of the following is not a result of poor workmanship?
RCDs being installed
Incorrect flex sizes
Incorrect fuse sizes
Bad installations
The image shown here is?
TNCS from neutral
TNS from armoured cable
TT from electrode
If your polarity test is proved successful and you are re-testing on 'voltage', what should the readings show for neutral and earth?
110v
230v
240v
0v
Which of the following differentiates conduit to trunking?
It protects flex from potential damages
It protects the customer from reaching the flex
It can be chased into a wall
It support the flexes
Which of the following is not considered a 'danger zone'?
Airing cupboard on the landing
Airing cupboard in the bathroom
The kitchen
An outhouse
Due to the works being carried out, what must all electrician tools require?
Insulated tools
Glass tools
Plastic tools
Conductive tools
Which of the following is described as: If a fault occurs, the electrical current would have a direct route through the wiring, stopping the person touching the metal object from getting a shock.
Equipotential bonding
Supplementary bonding
Cross bonding
Temporary continuity bonding
When isolating, the image shown needs to be? (Choose 2)
Locked off from the customer
Kept on incase of usage demand
Labelled sufficiently
Checked regularly to ensure a complete circuit is kept
Where would the component shown be used? (Choose 2)
Incoming mains
Immersions
Outhouses with power
Ring mains
On central heating systems, what is used instead of the image shown?
Large junction boxes known as wiring centres
Multiple junction boxes
Pull cord isolators
Electrical timers
A socket tester used in a domestic socket is a simple way of which of the following tests?
Supplementary bonding
Cross bonding
Polarity
Earth continuity
What size MCB is used in the protection of immersions?
6 amp
16 amp
32 amp
32-45 amp
What does DC stand for in domestic electrical terms?
(a)
If an appliance has a fuse rated at 4 amp, and the resistance is 27 ohms, what would the voltage be?
12v
110v
230v
400v
Select the correct sequence for the Volts - Watts - Amps.
Which of the following is the unit of resistance?
V
I
R
What is the first item to get damaged in the case of incorrect or undersized cables being used in a circuit or appliance?
The appliance
The MCB
The insulation
The fuses
What would be the resistance of a domestic appliance if the fuse size was 4 amp?
76.7 ohms
57.5 ohms
46 ohms
38.3 ohms
The majority of electric shocks and electrocutions are due to?
Incorrect earthing
Customer tampering
Incorrect qualifications
Incompetent people
To prevent overheating, thhe correct selection of flex is required. What flex would kettles or immersions use?
0.5mm
0.75mm
1.0mm
1.5mm
The supplementary bonding earth clips are made to which British Standard?
BS 6700
BS 8000
BS 7272
BS 951
To ensure that the supply is not switched back on by mistake, what should be followed?
Tell the customer not to touch it
Finish the task as quick as possible
Retain the fuse
All of the above
Lights in the bathroom are considered to be in a 'danger zone' and will have which pull cord?
Single pole isolator
Double pole isolator
What is the component shown here?
Pillar terminal
Claw type terminal
Screw/nut head terminal
Strip connector
Which of the following is described as: Ensure the use of _____ before cutting into pipework as the earth continuity is broken, so the plumber could become the earth and therefore get an electric shock.
Equipotential bonding
Supplementary bonding
Cross bonding
Temporary continuity bonding
What type of electrical component would use 1.5mm twin and earth on typical cable?
Small electric showers
Lightings
Larger electric showers
Ring mains
An appliance has a 9amp fuse and needs 1kW of power. What is the voltage required?
18v
110v
230v
450v
The fused spur is used to connect appliance to the ring final, giving?
The correct voltage
The correct ampere
The safest method of reistance in the circuit
A point of isolation
Which of the following does not require an electrical safe isolation before any kind of work starts?
Washing machine valves
Boilers
Cookers
Zone valves
What is the component shown here?
Equipotential bonding
Supplementary bonding
Cross bonding
Temporary continuity bonding
STATEMENT: Any visual faults needs to be reported to the homeowner or your supervisor before you proceed with fixing the electrical faults.
True
False
In which of the following would 12v, 18v or 24v DC be used?
Domestic sockets
Step-down transformer
Battery operated tools
The image shown here is missing steps. What is the correct sequence from 'incoming supply' to 'appliances/circuits'?
Meter -> Comsumer unit -> Suppliers fuse
Consumer unit -> Meter -> Suppliers fuse
Suppliers fuse -> Consumer unit -> Meter
Suppliers fuse -> Meter -> Cunsumer unit
Which of the following are not consequences of incorrect cables used in a circuit?
Cables turning brown
Appliances working to a higher efficiency
Cables becoming brittle
Cables overheating with potential fires
Which of the following is not purposes of trunking?
Protecting flex from potential damages
Protect the customer from reaching the flex
Protecting the flex from overheating
Supporting the flexes
