Electrical Testing Quiz

What is the primary purpose of a continuity test?

• To measure voltage

• To ensure there are no breaks in the circuit

• To measure current

• To test the circuit breaker

Which instrument is commonly used for insulation resistance testing?

• Megger

• Multimeter

• Oscilloscope

• Clamp meter

What does a high reading on a continuity test indicate?

• Good connection

• Poor connection

• Open circuit

• Short circuit

What is the standard test voltage for insulation resistance testing of low voltage installations?

• 250V

• 500V

• 1000V

• 2000V

Which test is used to verify the effectiveness of protective conductors?

• Continuity test

• Insulation resistance test

• Earth fault loop impedance test

• Polarity test

What is the main purpose of an earth fault loop impedance test?

• To measure the insulation resistance

• To ensure the circuit breaker operates correctly

• To check the continuity of conductors

• To measure the voltage drop

Which instrument is used to measure the prospective short-circuit current (PSCC)?

• Megger

• Multimeter

• PSCC tester

• Clamp meter

What is the acceptable range for earth resistance in a typical electrical installation?

• 0-1 ohm

• 1-5 ohms

• 5-10 ohms

• 10-20 ohms

What does a high reading on an earth fault loop impedance test indicate?

• Good earth connection

• Poor earth connection

• High voltage

• Low current

Which of the following tests is performed to ensure that the RCD operates correctly?

• Continuity test

• Insulation resistance test

• RCD test

• Earth fault loop impedance test