WorksheetsElectrical Quiz
Total questions: 16
Worksheet time: 8mins
How much current would flow in a circuit having 10Ω resistance on a 230 Volt supply?
2.3 A
23 A
230 A
2300 A
How much current would be drawn by a 3KW, 230V water heater?
0.07 A
0.76 A
1.30 A
13.0 A
Which non-statutory document gives requirements for Electrical Installations?
GS38
BS 7671
HSWA
EWR
What does RCD stand for?
Reacting circuit device
Resistive current deactivator
Residual current device
Remote circuit deactivator
What are the identification colours of the two conductors connected to the micro-switch within a zone valve?
Orange & Grey
Blue & Brown
Blue & Orange
Brown & Grey
What coloured conductors are classed as live?
Green
Yellow
Brown and Blue
Yellow and Green
What is the frequency of the electrical supply to the UK?
20Hz
50Hz
60Hz
100Hz
What type of drawing shows the location of electrical accessories within a building?
Plan drawing
Wiring diagram
Circuit diagram
Schematic drawing
What rating of circuit breaker should be used to protect a 230V, 9KW shower circuit?
20A
32A
40A
50A
Which of the following are the 3 parts of a cable?
Conductor, Insulation, Sheath
Core, Jacket, Shield
Wire, Cover, Protector
Fiber, Coating, Layer
Explain what is meant by IP54 when considering the ingress protection of electrical equipment.
IP54 means the equipment is protected against dust and water splashes.
IP54 means the equipment is fully waterproof and dustproof.
IP54 means the equipment is protected against high-pressure water jets.
IP54 means the equipment is protected against complete submersion in water.
What is the purpose of a split-way consumer unit?
To provide a single circuit for all electrical appliances
To separate circuits for lighting and power
To increase the voltage supply to the house
To reduce the electricity bill
In which situation would it not be appropriate to bond a metal water pipe using a main protective bonding conductor?
When the pipe is made of non-conductive material
When the pipe is not part of the electrical installation
When the pipe is located outdoors
When the pipe is used for gas supply
What does HSE document GS38 generally require?
Use of insulated tools and equipment
Mandatory use of safety helmets
Regular fire drills
Installation of smoke detectors
What does a motorised zone valve do in a central heating control system?
Controls the flow of water to different zones
Regulates the temperature of the boiler
Monitors the pressure in the system
Provides power to the heating system
What is the function of a fuse in an electrical circuit?
To increase the current flow
To protect the circuit from overcurrent
To convert AC to DC
To store electrical energy
