Electrical Circuits Quiz

What is the function of the line conductor in a circuit?

• To provide a path for current

• To increase voltage

• To decrease current

• To change frequency

In the diagram, what is the purpose of the brown sleeve?

• To insulate the wire

• To identify the line wire

• To protect the wire from damage

• To indicate a switched live wire

Which wire is typically used for safety grounding in electrical circuits?

• Neutral wire

• CPC wire

• Line wire

• Live wire

In the diagram, which component is responsible for switching the circuit on and off?

• Junction box

• Lamp

• One-way switch

• CPC wire

What is the function of the CPC wire in the diagram?

• Neutral

• Line

• Earth

• Live

What is the purpose of the junction box in the diagram?

• To connect wires

• To provide light

• To switch power

• To ground the circuit

Which standard is used for the transformer in a SELV system?

• BS EN 61558-2-6

• BS EN 61558-3-7

• BS EN 61558-1-5

• BS EN 61558-4-8

What is the typical overcurrent protective device rating for a ring final circuit?

• 10A

• 20A

• 30A or 32A

• 40A

What is the significance of the blue line in the electrical diagram?

• It represents the neutral wire

• It represents the line wire

• It represents the earth wire

• It represents the live wire

Which circuit type uses a 2.5 mm cable and has a maximum floor area of 50 m²?

• A1

• A2

• A3

• A4