How to do basic electrical repairs
  • 1. What is the first step before starting any electrical repair?
A) Gather your tools.
B) Turn off the power at the circuit breaker.
C) Wear rubber gloves.
D) Inspect the wiring.
  • 2. What tool is essential for testing if a circuit is live?
A) Non-contact voltage tester.
B) Multimeter.
C) Screwdriver.
D) Pliers.
  • 3. What is the purpose of a wire stripper?
A) To crimp wires.
B) To twist wires together.
C) To remove insulation from wires.
D) To cut wires.
  • 4. What does GFCI stand for?
A) Ground Fuse Circuit Indicator.
B) General Fuse Current Interrupter.
C) General Fault Current Indicator.
D) Ground Fault Circuit Interrupter.
  • 5. Where are GFCI outlets typically required?
A) Attics and basements (unfinished).
B) Bedrooms and living rooms.
C) Hallways and closets.
D) Bathrooms and kitchens.
  • 6. What is the purpose of a wire connector (e.g., a wire nut)?
A) To protect wires from damage.
B) To insulate a single wire.
C) To secure wires to a device.
D) To join two or more wires together.
  • 7. What color wire is typically used for the neutral wire in a standard US electrical circuit?
A) White.
B) Black.
C) Green.
D) Red.
  • 8. What color wire is typically used for the ground wire?
A) Green or bare copper.
B) Black.
C) Red.
D) White.
  • 9. What does 'AWG' stand for in relation to wire size?
A) American Wire Guard.
B) American Wire Gauge.
C) American Wire Grinder.
D) American Wire Grade.
  • 10. If a light switch is not working, what is the first thing to check?
A) The light bulb.
B) The wiring at the switch.
C) The circuit breaker.
D) The fuse box.
  • 11. When replacing an outlet, what should you do with the wires?
A) Connect them to the new outlet exactly as they were connected to the old one.
B) Connect the white wire to the hot terminal.
C) It doesn't matter how you connect them, as long as they are secure.
D) Connect the black wire to the ground terminal.
  • 12. What is the most common cause of a tripped circuit breaker?
A) Loose wiring.
B) Overloaded circuit.
C) Low voltage.
D) Faulty outlet.
  • 13. What is the purpose of electrical tape?
A) To insulate electrical connections.
B) To secure wires together.
C) To protect wires from physical damage.
D) To identify different circuits.
  • 14. What should you do if you find frayed or damaged wiring?
A) Replace the wiring.
B) Apply a sealant.
C) Ignore it if it's not sparking.
D) Wrap it tightly with electrical tape.
  • 15. What is a pigtail connection?
A) A short wire used to connect multiple wires to a single terminal.
B) A method of grounding electrical devices.
C) A type of wire insulation.
D) A connector used for outdoor wiring.
  • 16. Which tool is best for bending wires neatly when installing in a box?
A) Hammer.
B) Wire strippers.
C) Screwdriver.
D) Needle-nose pliers.
  • 17. What is the function of the breaker panel (or electrical panel)?
A) To increase the voltage of electricity.
B) To connect the house to the power grid.
C) To distribute electricity and protect circuits from overloads.
D) To store excess electricity.
  • 18. What is the danger of using extension cords as a permanent wiring solution?
A) They are unsightly.
B) They attract pests.
C) They can overheat and cause a fire.
D) They reduce the voltage to appliances.
  • 19. What should you do if you are unsure about how to perform an electrical repair?
A) Ask a neighbor for help.
B) Consult a qualified electrician.
C) Try to figure it out yourself.
D) Watch a YouTube video.
  • 20. What is the purpose of a conduit?
A) To distribute electricity evenly.
B) To cool down wires.
C) To protect wiring from damage.
D) To increase the voltage of electricity.
  • 21. What type of screwdriver is typically used for electrical work?
A) Screwdrivers with insulated handles.
B) Regular metal screwdrivers.
C) Magnetic screwdrivers.
D) Screwdrivers with wooden handles.
  • 22. What is the safe way to handle a shock you receive from electricity?
A) Have a medical professional check you.
B) Ignore it, it's just static.
C) Continue working after.
D) Drink water and rest.
  • 23. What is 'AFCI' and what does it protect against?
A) Automatic Fault Current Indicator, indicates faulty circuits automatically.
B) Arc Fault Circuit Interrupter, protects against electrical fires from arcs.
C) Advanced Fuse Circuit Indicator, protects against blown fuses.
D) Air Flow Circuit Interrupter, protects against dust build-up.
  • 24. What safety equipment, besides insulated tools, is good to wear when working with electrical components?
A) Gloves (non-rubber).
B) Safety glasses.
C) Earplugs.
D) A hard hat.
  • 25. When working in a breaker box, what should be done, if possible, in addition to turning off the breaker you are working on?
A) Yell loudly to warn others.
B) Turn off all breakers.
C) Turn off the main breaker.
D) Work with one hand only.
  • 26. What should be done with old wiring that is disconnected but still in place?
A) Wrap it tightly in electrical tape.
B) Remove it if it is not going to be used.
C) Cap the ends, but leave it where it is.
D) Leave it in place as it is a reminder.
  • 27. When tightening a wire connection, what is a common mistake?
A) Over-tightening, stripping the screw.
B) Under-tightening, causing it to come loose.
C) Forgetting to strip the wire.
D) Using the wrong type of screwdriver.
  • 28. What is the common voltage in US homes?
A) 480V
B) 240V
C) 120V
D) 60V
  • 29. What is electrical resistance measured in?
A) Amps
B) Watts
C) Ohms
D) Volts
  • 30. Which of the following is the BEST way to extinguish an electrical fire?
A) Use a Class C fire extinguisher.
B) Throw water on it.
C) Smother it with a blanket.
D) Use a Class A fire extinguisher.
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