Electrical Hazards: Stay Safe and Prevent Accidents

Question 1

Which of the following **is not** a potential electrical hazard?

Accepted Answer

Toxic fumes

Answer

Electric shock

Answer

Arc flash

Answer

Fire

Question 2

Which type of personal protective equipment (PPE) is **not** required when working with low-voltage electricity?

Accepted Answer

Hard hat

Answer

Insulated gloves

Answer

Safety glasses

Answer

Non-conductive footwear

Question 3

What is the primary purpose of a ground fault circuit interrupter (GFCI)?

Accepted Answer

To prevent electric shock

Answer

To prevent arc flash

Answer

To prevent fire

Answer

To prevent power outages

Question 4

What is the fundamental difference between a conductor and an insulator?

Accepted Answer

Conductors allow electricity to flow, while insulators do not

Answer

Insulators allow electricity to flow, while conductors do not

Answer

Conductors are used in electrical wiring, while insulators are not

Answer

Insulators are used in electrical wiring, while conductors are not

Question 5

Which of the following actions is considered unsafe when working with electricity?

Accepted Answer

Working on energized circuits

Answer

Using tools with proper insulation

Answer

Wearing appropriate personal protective equipment (PPE)

Question 6

Which of the following materials prevents the flow of electricity and is used as an insulating material?

Accepted Answer

Rubber

Answer

Steel

Answer

Aluminum

Answer

Copper

Question 7

What is the SI unit used to measure the flow of electric charge?

Accepted Answer

Ampere

Answer

Volt

Answer

Watt

Answer

Ohm

Question 8

What is the main function of a ground fault circuit interrupter (GFCI)?

Accepted Answer

To prevent electrical shocks by interrupting the circuit when a fault occurs.

Answer

To prevent overloads

Answer

To suppress voltage spikes

Question 9

Which of the following practices is essential for electrical safety?

Accepted Answer

Wear appropriate personal protective equipment (PPE), such as rubber gloves, when working with electricity.

Answer

Handle electrical wires with bare hands.

Answer

Disregard electrical safety regulations.

Answer

Work on live circuits without proper precautions.

Question 10

What is a potential consequence of an uncontrolled electrical fire?

Accepted Answer

Extensive damage to property and potential loss of life.

Answer

Temporary power outage

Answer

Minor inconvenience

Question 11

Which of the following is a common symptom experienced during an electrical shock?

Accepted Answer

Involuntary muscle contractions

Answer

Increased body temperature

Answer

Improved coordination

Answer

Clear skin

Question 12

Which of the following poses a potential hazard when using extension cords?

Accepted Answer

Overloading the cord beyond its rated capacity.

Answer

Improved insulation

Answer

Increased efficiency

Answer

Extended lifespan

Question 13

What is the primary function of a circuit breaker?

Accepted Answer

To protect electrical circuits by interrupting the flow of electricity in the event of an overload or short circuit.

Answer

To increase power factor

Answer

To improve grounding

Answer

To regulate voltage

Question 14

Identify the situation that does **NOT** pose an electrical hazard:

Accepted Answer

Properly grounded and regularly inspected electrical equipment

Answer

Exposed wires

Answer

Overloaded circuits

Answer

Faulty insulation

Question 15

Which practice is most effective in preventing electrical shock?

Accepted Answer

Using insulated tools and wearing appropriate protective gear

Answer

Working on wet surfaces

Answer

Ignoring warning labels

Answer

Touching electrical equipment with bare hands

Question 16

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

Accepted Answer

To break the circuit and prevent excessive current flow

Answer

To store electrical energy

Answer

To improve power efficiency

Answer

To regulate voltage

Question 17

Which of the following is a common indicator of a potential electrical problem?

Accepted Answer

Flickering lights or unusual sounds

Answer

Cool equipment surfaces

Answer

Clean, odorless air

Answer

Normal operating sounds

Question 18

What should be your immediate action if you experience an electrical shock?

Accepted Answer

Break contact with the source, check for injuries, and seek medical attention if necessary

Answer

Ignore it if it's not severe

Answer

Try to fix the problem yourself

Question 19

Which practice is **NOT** a safety precaution when working with electricity?

Accepted Answer

Wearing conductive jewelry or clothing

Answer

Insulating yourself from the ground

Answer

Keeping work areas dry and clean

Answer

Using non-conductive materials

Question 20

What is the primary function of a Ground Fault Circuit Interrupter (GFCI)?

Accepted Answer

To detect ground faults and quickly interrupt electrical flow to prevent electrocution

Answer

To improve energy efficiency

Answer

To regulate electrical voltage

Question 21

According to electrical code, which color is used to identify the neutral wire in an electrical system?

Accepted Answer

White

Answer

Black

Answer

Red

Question 22

What is the proper way to handle a damaged electrical cord?

Accepted Answer

Unplug it immediately, discard it, and replace it with a new one

Answer

Ignore it and hope for the best

Answer

Repair it with electrical tape

Answer

Continue using it if it's not sparking or frayed

Question 23

Which of the following is the most common electrical hazard encountered in residential settings?

Accepted Answer

Electrical shock

Answer

Electrical explosions

Answer

Electrical fires

Answer

Electrical burns

Question 24

What is the primary measure of protection against electrical shock?

Accepted Answer

Grounding

Answer

Circuit breakers

Answer

Fusing

Answer

Insulation

Question 25

Which type of electrical cord is most susceptible to damage and can pose a safety hazard?

Accepted Answer

Extension cords

Answer

Industrial cords

Answer

Appliance cords

Answer

Power cords

Question 26

What is the primary function of a circuit breaker?

Accepted Answer

To interrupt the flow of electricity when a circuit becomes overloaded

Answer

To protect against electrical shocks

Answer

To prevent electrical fires

Question 27

What is the recommended action if you come into contact with a live electrical wire?

Accepted Answer

Do not panic. Move away slowly and call for help.

Answer

Try to pull the wire away

Answer

Kick the wire away with your foot

Answer

Use a non-conductive object to move the wire

Question 28

Which of the following is an effective way to prevent electrical accidents?

Accepted Answer

Inspect electrical cords and equipment regularly

Answer

Overloading electrical circuits

Answer

Using electrical appliances in wet areas

Question 29

Which of the following personal protective equipment (PPE) is essential when working with electricity?

Accepted Answer

Insulated gloves

Answer

Hard hat

Answer

Safety glasses

Answer

Steel-toed boots

Question 30

What is the primary purpose of an electrical lockout/tagout procedure?

Accepted Answer

To prevent accidental energization of electrical equipment during maintenance or repairs

Answer

To isolate electrical equipment from the power source

Answer

To label electrical equipment with warning tags

Question 31

Which of the following is not a hazard typically associated with electricity?

Accepted Answer

Properly installed and maintained electrical equipment

Answer

Exposed terminals

Answer

Uninsulated wires

Answer

Overloaded circuits

Question 32

What is the primary purpose of electrical insulation?

Accepted Answer

To prevent current flow where it is not intended, such as to the equipment's enclosure or ground.

Answer

To increase the resistance of the circuit.

Answer

To dissipate heat generated by the current.

Answer

To store electrical energy.

Question 33

What is the main purpose of a ground fault circuit interrupter (GFCI)?

Accepted Answer

To prevent electrocution by tripping the circuit in the event of a ground fault, where current escapes from the intended path.

Answer

To detect and isolate faulty wiring.

Answer

To regulate the voltage of the circuit.

Question 34

If someone is experiencing an electrical shock, what should be your first action?

Accepted Answer

Turn off the power source if possible. Do not touch the person until the power is off.

Answer

Call for help immediately.

Answer

Check for a pulse.

Question 35

Which of the following is a safe practice when working on electrical systems?

Accepted Answer

Using a voltage tester to verify that the circuit is de-energized before touching any components.

Answer

Working on live wires.

Answer

Touching electrical components without proper PPE.

Question 36

What is the main purpose of a lockout/tagout procedure in an electrical context?

Accepted Answer

To prevent accidental energization of electrical equipment during maintenance or repairs by ensuring that power sources are isolated and cannot be turned on without authorization.

Answer

To protect against power surges.

Answer

To isolate faulty equipment.

Question 37

Which of the following is a fatal consequence of electrical shock?

Accepted Answer

Electrocution

Answer

Muscle spasms

Answer

Burns

Answer

Loss of consciousness

Question 38

What is the primary purpose of a ground fault circuit interrupter (GFCI)?

Accepted Answer

To prevent electrocution

Answer

To disconnect appliances in case of fire

Answer

To prevent overcurrent

Answer

To detect voltage surges

Question 39

Upon encountering a downed power line, what is the most appropriate action to take?

Accepted Answer

Stay away and call 911

Answer

Approach cautiously

Answer

Attempt to move the line

Answer

Touch the line to check if it's live

Question 40

According to electrical safety standards, what is the minimum recommended insulation resistance for electrical wiring?

Accepted Answer

1 megohm

Answer

100 ohms

Answer

10,000 ohms

Answer

10 ohms

Question 41

Which of the following is a potential electrical hazard?

Accepted Answer

Touching exposed wires

Answer

Working with insulated tools

Answer

Wearing rubber-soled shoes

Answer

Using a grounded extension cord

Question 42

What type of electrical shock occurs when the body becomes a complete circuit between two sources of electricity?

Accepted Answer

Series shock

Answer

Parallel shock

Answer

Arcing shock

Answer

Contact shock

Question 43

Which of the following can cause an electrical arc flash?

Accepted Answer

Short circuit

Answer

Voltage spike

Answer

Overload

Answer

Ground fault

Question 44

What should you do if you see someone who has been electrocuted?

Accepted Answer

Call 911 immediately and check for breathing

Answer

Apply a cold compress to the affected area

Answer

Administer CPR

Answer

Try to remove the person from the electrical source

Question 45

What is the purpose of a GFCI?

Accepted Answer

To prevent electrical shocks in wet or damp environments

Answer

To protect against overloads

Answer

To isolate a circuit when a fault occurs

Answer

To suppress voltage spikes

Question 46

Which of the following is the primary cause of electrical fatalities?

Accepted Answer

Electric shock

Answer

Arc flash

Answer

Burns

Answer

Falls

Question 47

Which of the following practices should you avoid when working with electricity?

Accepted Answer

Using bare hands or metal tools near energized circuits

Answer

Turning off power before starting work

Answer

Wearing insulated gloves

Answer

Using a ground fault circuit interrupter (GFCI)

Question 48

When someone is in contact with an electrical source, which action should be taken as the first priority?

Accepted Answer

Disconnect the power source

Answer

Move the victim away from the source

Answer

Call emergency services (911)

Answer

Administer CPR

Question 49

What is the purpose of a Ground Fault Circuit Interrupter (GFCI)?

Accepted Answer

Detects and interrupts ground faults, preventing electrical shock

Answer

Isolates circuits during a fault

Answer

Prevents circuit overload

Question 50

Why is it important to avoid working with wet hands or tools around electricity?

Accepted Answer

Water increases the risk of electric shock

Answer

Tool malfunction

Answer

Short circuit

Question 51

Before working on any electrical circuit, what essential step must be taken?

Accepted Answer

De-energize the circuit and verify with a tester

Answer

Put on insulated gloves

Answer

Ground the circuit

Answer

Wear safety glasses

Question 52

Which of these is a clear indication of a potential electrical hazard?

Accepted Answer

Frayed or damaged cords

Answer

Working GFCI outlets

Answer

Properly labeled circuit breakers

Question 53

What is the primary advantage of using insulated tools when working with electricity?

Accepted Answer

Protects against electric shock by providing a non-conductive barrier

Answer

Prevents sparks

Answer

Increases grip strength