Electrical Faults Quiz

What is an earth fault?

• A fault due to short circuit between live and neutral wires

• A fault due to a break in the live wire

• A fault between live wire and earth

• A fault due to a break in the neutral wire

What is the primary cause of a short circuit?

• High resistance in the circuit

• Excessive earthing

• Break in the circuit

• Direct contact between live and neutral wires

Which device is used to protect against earth faults?

• Circuit breaker

• Residual current device (RCD)

• Fuse

• Transformer

What can be a consequence of a high resistance fault?

• Immediate tripping of the circuit breaker

• Loss of supply

• Overheating and potential fire

• Increased efficiency

What is a common symptom of a loss of supply fault?

• Flickering lights

• Overheating of appliances

• Complete power outage

• High voltage

What should be done first when diagnosing an electrical fault?

• Replace the fuse

• Check the circuit breaker

• Test the voltage

• Isolate the faulty circuit

Which component can help in detecting a short circuit?

• Ammeter

• Voltmeter

• Ohmmeter

• Wattmeter

In which scenario is a high resistance fault most likely to occur?

• In a short circuit

• In a well-maintained circuit

• In a circuit with corroded connections

• In an earthed circuit

What is the primary function of a fuse in an electrical circuit?

• To prevent sensitive earth faults

• To provide power backup

• To protect the circuit from overcurrent

• To regulate voltage

What does an RCD primarily protect against?

• Overvoltage

• Earth faults

• Short circuits

• High resistance faults