Electrical Safety and Testing Quiz

Which of the following is a common method for testing the insulation resistance of electrical wiring?

• Voltage drop test

• Insulation resistance tester

• Continuity test

• Ground fault circuit interruption test

What is the purpose of a fuse in an electrical circuit?

• To increase the voltage

• To control the current flow

• To protect the circuit from overloads

• To reduce the power consumption

Which of the following is a key safety consideration when working with electrical installations?

• Using uninsulated tools

• Working on live circuits

• Disconnecting the power supply before working on the circuit

• Wearing metal jewelry

What does the term "earthing" refer to in electrical installations?

• Connecting the electrical circuit to a water pipe

• Connecting the electrical circuit to a ground electrode

• Connecting the electrical circuit to a metal frame

• Connecting the electrical circuit to a battery

Which of the following is a type of wiring system commonly used in domestic installations?

• Cleat wiring

• Conduit wiring

• Surface wiring

• All of the above

What is the main purpose of a circuit breaker?

• To increase the voltage in the circuit

• To reduce the current flow

• To automatically interrupt the circuit in case of a fault

• To provide a visual indication of the circuit status

What is the purpose of a multimeter in electrical testing?

• To measure only voltage

• To measure only current

• To measure voltage, current, and resistance

• To measure only frequency

What does "BS 7671" refer to in the context of electrical installations?

• A type of fuse

• A standard for electrical safety in the UK

• A type of wiring

• A tool for electrical testing

What is the function of a "cable cleat" in wiring?

• To protect the cable from mechanical damage

• To hold the cable securely in place

• To provide a waterproof seal for the cable

• To connect the cable to the power supply

What is the significance of the "earth resistance" value in an electrical installation?

• It indicates the quality of the electrical supply

• It indicates the effectiveness of the earthing system

• It indicates the power consumption of the installation

• It indicates the insulation resistance of the wiring