Electrical Wiring

Which of the following is not a type of electrical wire?

• Copper wire

• Aluminum wire

• Fiber optic cable

• Tin wire

What is the purpose of a ground wire?

• To connect electrical devices to the Earth

• To insulate electrical circuits

• To carry electrical current

• To regulate voltage

What is the standard color for a live wire in electrical wiring?

• Yellow

• Black

• Green

• Red

Which type of wire is commonly used for residential electrical wiring?

• Romex cable

• Ethernet cable

• Coaxial cable

• Twisted pair cable

What is the purpose of insulation on electrical wire?

• To improve conductivity

• To protect the wire from mechanical damage

• To prevent electrical shocks

• To support the weight of the wire

What is the purpose of a neutral wire in electrical wiring?

• To complete the circuit

• To connect electrical devices to the Earth

• To regulate voltage

• To carry electrical current

Which of the following is true about electrical wiring?

• Electrical wires should never be exposed

• It should always be done by a professional electrician

• Only one type of wire is used in electrical wiring

• It is safe to touch live wires

What is the purpose of a junction box in electrical wiring?

• To store extra wire

• To conceal electrical connections

• To increase voltage

• To connect multiple wires

Which of the following is an example of a low voltage electrical wire?

• 120V AC wire

• 220V AC wire

• 12V DC wire

• 240V AC wire

What is the purpose of a circuit breaker in electrical wiring?

• To measure electrical current

• To regulate voltage

• To prevent electrical shocks

• To open the circuit in case of overload