Electrical Safety Quiz 2025
1. What is the main cause of electrical accidents?
a) Equipment failure
b) Human error
c) Weather conditions
d) Poor insulation
Answer: b) Human error
Explanation: Most electrical accidents occur due to improper handling, lack of awareness, or failure to follow safety procedures.
2. What is the safe distance to keep from overhead power lines?
a) 2 meters
b) 3 meters
c) 6 meters
d) 10 meters
Answer: c) 6 meters
Explanation: A minimum distance of 6 meters is recommended to avoid accidental contact with high-voltage power lines.
3. What does GFCI stand for?
a) Ground Fault Circuit Interrupter
b) General Fuse Control Indicator
c) Ground Fuse Connection Indicator
d) General Fault Circuit Interruption
Answer: a) Ground Fault Circuit Interrupter
Explanation: GFCIs protect against electrical shocks by shutting off power when a ground fault is detected.
4. What should you do if someone is electrocuted?
a) Pull them away with bare hands
b) Turn off the power source before touching them
c) Pour water on them
d) Call for help but do nothing else
Answer: b) Turn off the power source before touching them
Explanation: Turning off the power ensures you don’t become a victim of electric shock while helping the injured person.
5. Which of the following is a sign of faulty electrical equipment?
a) A humming noise
b) Frayed wires
c) Overheating
d) All of the above
Answer: d) All of the above
Explanation: Humming noises, frayed wires, and overheating are common signs that equipment may pose an electrical hazard.
6. What is the purpose of an electrical lockout/tagout procedure?
a) To test equipment
b) To replace fuses
c) To prevent accidental energization of equipment
d) To measure voltage
Answer: c) To prevent accidental energization of equipment
Explanation: Lockout/tagout ensures that equipment cannot be accidentally powered on during maintenance or repair work.
7. What does PPE for electrical safety include?
a) Rubber gloves and insulated tools
b) Hard hats only
c) Steel-toe boots
d) Hearing protection
Answer: a) Rubber gloves and insulated tools
Explanation: PPE for electrical work often includes rubber gloves, insulated tools, and other items to protect against electrical shocks.
8. Why should water never be used on electrical fires?
a) It causes sparks
b) It spreads the fire
c) Water conducts electricity and increases the risk of shock
d) It damages the equipment
Answer: c) Water conducts electricity and increases the risk of shock
Explanation: Using water on electrical fires can lead to electrocution as water conducts electricity.
9. What is the standard color of electrical hazard warning signs?
a) Green
b) Blue
c) Yellow
d) Red
Answer: c) Yellow
Explanation: Yellow is the standard color for warning signs related to electrical hazards.
10. What is the first step in troubleshooting electrical equipment?
a) Test the power source
b) Inspect the equipment visually
c) Replace the wiring
d) Use the equipment directly
Answer: b) Inspect the equipment visually
Explanation: Visual inspection helps identify obvious issues such as frayed wires or visible damage.
11. What voltage level is considered dangerous to humans?
a) 10 volts
b) 30 volts
c) 50 volts
d) 100 volts
Answer: c) 50 volts
Explanation: Electrical currents above 50 volts can cause severe shocks and are considered dangerous.
12. Which type of extinguisher should be used for electrical fires?
a) Water
b) Foam
c) Carbon dioxide (CO₂)
d) Powder
Answer: c) Carbon dioxide (CO₂)
Explanation: CO₂ extinguishers are non-conductive and effectively smother electrical fires without damaging equipment.
13. What should you do before using any electrical tool?
a) Test it on a live circuit
b) Read the manufacturer’s manual
c) Check for damaged cords or plugs
d) Plug it in immediately
Answer: c) Check for damaged cords or plugs
Explanation: Inspecting tools ensures that there are no damaged parts that could pose a safety risk.
14. What is the function of an electrical circuit breaker?
a) To reduce power consumption
b) To allow continuous flow of current
c) To protect circuits from overload or short circuits
d) To distribute electricity equally
Answer: c) To protect circuits from overload or short circuits
Explanation: Circuit breakers automatically cut off electricity to prevent overheating and fire risks.
15. What is the purpose of earthing (grounding) in electrical systems?
a) To improve current flow
b) To enhance equipment performance
c) To provide a safe path for fault currents
d) To conserve electricity
Answer: c) To provide a safe path for fault currents
Explanation: Earthing directs fault currents into the ground, preventing electrical shocks and equipment damage.
16. Which of the following is NOT a common electrical hazard?
a) Overloaded circuits
b) Wet environments
c) Excessive noise
d) Damaged insulation
Answer: c) Excessive noise
Explanation: While excessive noise is a workplace hazard, it is not specific to electrical systems.
17. What is the minimum clearance distance for live electrical parts under 50 kV?
a) 1 meter
b) 2 meters
c) 3 meters
d) 5 meters
Answer: c) 3 meters
Explanation: For live parts under 50 kV, a clearance of at least 3 meters is recommended to ensure safety.
18. What is the purpose of double insulation in electrical tools?
a) To increase tool efficiency
b) To eliminate the need for grounding
c) To reduce weight
d) To prevent overheating
Answer: b) To eliminate the need for grounding
Explanation: Double insulation provides an extra layer of protection, making grounding unnecessary.
19. How should electrical cords be handled in the workplace?
a) Taped to the floor
b) Hung from the ceiling
c) Kept untangled and away from walkways
d) Hidden under rugs
Answer: c) Kept untangled and away from walkways
Explanation: Proper handling of cords prevents tripping hazards and damage to the insulation.
20. What does the term “arc flash” refer to?
a) A sudden burst of light from a circuit
b) A dangerous release of electrical energy due to a fault
c) A tool used to detect voltage
d) A type of circuit breaker
Answer: b) A dangerous release of electrical energy due to a fault
Explanation: Arc flashes can cause severe burns and injuries due to the high heat and energy released during an electrical fault.
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