Electrical Safety: Troubleshooting and Minor Repairs Quiz

Question 1

When troubleshooting an electrical issue, which step should you NOT take?

Accepted Answer

Calling an electrician promptly

Answer

Identifying the problem

Answer

Gathering essential tools

Answer

Isolating the affected circuit

Question 2

Before beginning any electrical work, what critical safety precaution should always be prioritized?

Accepted Answer

Switching off the main electrical supply

Answer

Wearing insulated gloves

Answer

Checking voltage using a multimeter

Answer

Testing the circuit with a screwdriver

Question 3

In electrical troubleshooting, which tool is used to determine voltage in a circuit?

Accepted Answer

Multimeter

Answer

Screwdriver

Answer

Pliers

Answer

Insulated gloves

Question 4

In UK domestic electrical circuits, what type of fuse is most commonly employed?

Accepted Answer

Blade fuse

Answer

Ceramic fuse

Answer

Glass fuse

Answer

Cartridge fuse

Question 5

In UK electrical installations, what colour is typically used for the live wire?

Accepted Answer

Red

Answer

Black

Answer

Blue

Answer

Green/yellow

Question 6

In electrical installations, what is the primary purpose of an earth wire?

Accepted Answer

To prevent electric shocks

Answer

To conduct live current

Answer

To provide a neutral path

Answer

To increase circuit efficiency

Question 7

As a homeowner, which electrical safety responsibility is crucial?

Accepted Answer

Promptly reporting electrical faults

Answer

Regularly inspecting electrical appliances

Answer

Attempting DIY electrical repairs without professional guidance

Answer

Ignoring minor electrical issues

Question 8

When troubleshooting an electrical circuit, what should be the initial step?

Accepted Answer

Inspecting the fuses or circuit breakers.

Answer

Utilizing a multimeter to measure voltage and continuity.

Answer

Replacing all the wires in the circuit.

Answer

Contacting a qualified electrician.

Question 9

What is the primary function of an RCD (Residual Current Device)?

Accepted Answer

To safeguard against electrical shocks.

Answer

To prevent electrical fires.

Answer

To enhance energy efficiency.

Answer

To isolate faulty circuits.

Question 10

In domestic electrical installations within the UK, which type of wire insulation is most commonly utilized?

Accepted Answer

PVC (Polyvinyl Chloride)

Answer

XLPE (Cross-Linked Polyethylene)

Answer

Rubber

Answer

Teflon

Question 11

In the UK, what is the maximum current rating for a standard 13A plug and socket?

Accepted Answer

13A

Answer

10A

Answer

16A

Answer

20A

Question 12

What is the purpose of a fuse wire?

Accepted Answer

To protect against excessive current.

Answer

To isolate faulty circuits.

Answer

To regulate voltage.

Answer

To enhance electrical conductivity.

Question 13

When replacing a light bulb, what is the proper procedure?

Accepted Answer

Turn off the light, allow it to cool, and then replace the bulb.

Answer

Turn off the light, immediately replace the bulb, and then turn it back on.

Answer

Leave the light on to enhance visibility while replacing the bulb.

Answer

Turn off the main electrical panel before replacing the bulb.

Question 14

When working on electrical circuits, it is essential to wear:

Accepted Answer

Insulated gloves and safety glasses.

Answer

A hard hat and steel-toe boots.

Answer

A face mask and earplugs.

Answer

Cotton clothing and rubber sandals.

Question 15

Which electrical outlet is specifically designed for high-power appliances such as stoves and washing machines?

Accepted Answer

Cooker outlet

Answer

Single socket

Answer

Double socket

Answer

Switched outlet

Question 16

Which of the following is NOT a common electrical hazard in the home?

Accepted Answer

Properly maintained electrical outlets

Answer

Loose electrical cords

Answer

Overloaded electrical circuits

Answer

Water damage to electrical appliances

Question 17

Which type of cable is typically used for household electrical circuits in the UK?

Accepted Answer

Armoured cable

Answer

Coaxial cable

Answer

Fibre optic cable

Answer

HDMI cable

Question 18

What is the primary purpose of an earth wire in an electrical installation?

Accepted Answer

To provide a safe path for excess current to flow to the ground in the event of a fault

Answer

To carry electrical current

Answer

To prevent electrical shocks

Answer

To connect to the water pipes

Question 19

Which of the following is NOT a recommended tool for troubleshooting electrical issues?

Accepted Answer

Hammer

Answer

Multimeter

Answer

Voltage tester

Answer

Insulated screwdriver

Question 20

Which type of fuse is typically used in UK homes?

Accepted Answer

Blade fuse

Answer

Ceramic fuse

Answer

Glass fuse

Answer

Cartridge fuse

Question 21

Which of the following is NOT a common cause of electrical faults in the home?

Accepted Answer

Inclement weather

Answer

Overloaded circuits

Answer

Loose connections

Answer

Faulty appliances

Question 22

Before undertaking any electrical work, it is imperative to:

Accepted Answer

Turn off the power at the fuse box

Answer

Wear rubber gloves and safety glasses

Answer

Test the voltage with a multimeter

Answer

Contact a qualified electrician

Question 23

What is the primary purpose of an earth wire in an electrical circuit?

Accepted Answer

To prevent electric shocks

Answer

To complete the circuit

Answer

To increase the current flow

Answer

To protect against power surges

Question 24

If you experience an electric shock while working on an electrical appliance, what should you do?

Accepted Answer

Turn off the power and seek medical attention

Answer

Continue working, it will subside

Answer

Call for immediate assistance

Answer

Attempt to fix the problem yourself

Question 25

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

Accepted Answer

To prevent overcurrent

Answer

To act as a conductor

Answer

To store electrical energy

Answer

To regulate voltage

Question 26

Which of the following is NOT a type of electrical wiring used in residential buildings?

Accepted Answer

Cat5e Ethernet cable

Answer

Twin and Earth

Answer

Armoured cable

Answer

Coaxial cable

Question 27

In household electrical wiring, which type of wire is most commonly used?

Accepted Answer

Copper wire

Answer

Aluminum wire

Answer

Coaxial cable

Answer

Fiber optic cable

Question 28

When replacing a blown fuse, it must be replaced with one of what rating?

Accepted Answer

Same amperage rating

Answer

Higher amperage rating

Answer

Lower amperage rating

Answer

Any amperage rating

Question 29

Which of the following is NOT a potential risk associated with electrical work?

Accepted Answer

Hypothermia

Answer

Electric shock

Answer

Burns

Answer

Fire

Question 30

To remove the insulation from electrical wires, which tool is commonly used?

Accepted Answer

Wire strippers

Answer

Electrical tape

Answer

Multimeter

Answer

Screwdriver

Question 31

For grounding purposes, which type of wire is employed?

Accepted Answer

Green/yellow

Answer

Black

Answer

Red

Answer

White

Question 32

In the United Kingdom, what is the recommended amperage for a conventional 13 amp socket?

Accepted Answer

13 amps

Answer

5 amps

Answer

10 amps

Answer

16 amps

Question 33

Which of the following is not considered personal protective equipment (PPE) for electrical work?

Accepted Answer

Hard hat

Answer

Insulated gloves

Answer

Safety glasses

Answer

Rubber boots

Question 34

What is the primary purpose of the earth wire in an electrical system?

Accepted Answer

To provide a pathway for fault current

Answer

To connect the appliance to the neutral wire

Answer

To carry the main current

Answer

To isolate the circuit from the power source

Question 35

Which tool is used to measure the voltage across a component when troubleshooting an electrical circuit?

Accepted Answer

Multimeter

Answer

Screwdriver

Answer

Pliers

Question 36

Which of the following is NOT a typical reason for household electrical fires?

Accepted Answer

Dust accumulation on electrical devices

Answer

Overloaded circuits

Answer

Damaged wiring

Answer

Faulty appliances

Question 37

When replacing a fuse, it is crucial to use one with:

Accepted Answer

An identical amperage rating as the blown fuse

Answer

A higher amperage rating than the blown fuse

Answer

A lower amperage rating than the blown fuse

Answer

Any available amperage rating

Question 38

Which of the following tools is most commonly used for electrical troubleshooting?

Accepted Answer

Multimeter

Answer

Hammer

Answer

Screwdriver

Answer

Pliers

Question 39

Which of the following is NOT a potential risk associated with electrical work?

Accepted Answer

Eye strain

Answer

Electric shock

Answer

Burns

Answer

Heat stroke

Question 40

When working with electricity, which of the following is a critical safety precaution to **avoid**?

Accepted Answer

Wearing jewelry

Answer

Inspecting tools for damage

Answer

Wearing insulated gloves

Answer

Turning off the power supply at the source

Question 41

In the process of troubleshooting an electrical circuit, what should be your initial action?

Accepted Answer

Checking for loose connections

Answer

Summoning a licensed electrician

Answer

Measuring the voltage at the outlet

Answer

Replacing the fuse or circuit breaker

Question 42

In an electrical system, what type of wire is primarily used for grounding?

Accepted Answer

Bare copper

Answer

Aluminum

Answer

Insulated copper

Question 43

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

Accepted Answer

Protecting against excessive current flow

Answer

Providing a pathway for electricity

Answer

Controlling voltage

Answer

Storing electrical energy

Question 44

When replacing a light switch, which wire should be connected to the black terminal?

Accepted Answer

The hot wire

Answer

The white wire

Answer

The ground wire

Answer

The neutral wire

Question 45

What is the primary hazard associated with touching an exposed electrical wire?

Accepted Answer

Electric shock

Answer

Fire

Answer

Corrosion

Question 46

What is the recommended course of action if you encounter a loose electrical outlet?

Accepted Answer

Turn off the power and contact an electrician

Answer

Tighten it yourself

Answer

Ignore it and continue using it

Question 47

What is a key benefit of conducting regular electrical inspections?

Accepted Answer

Identifying potential hazards

Answer

Improving home aesthetics

Answer

Saving money on energy bills

Answer

Increasing property value

Question 48

Which of the following poses a significant electrical hazard in the home environment?

Accepted Answer

Exposed live wires

Answer

Unsecured rugs

Answer

Excessive clutter

Answer

Damp surfaces

Question 49

When preparing to work on an electrical circuit, it is imperative to:

Accepted Answer

Isolate the power supply at the mains

Answer

Measure the voltage using a multimeter

Answer

Put on rubber gloves

Answer

Don safety spectacles

Question 50

Which instrument is specifically designed to measure electrical current?

Accepted Answer

Ammeter

Answer

Voltmeter

Answer

Ohmmeter

Answer

Multimeter

Question 51

What primary purpose does an earth wire serve in an electrical circuit?

Accepted Answer

Provides a safe pathway for excess electricity to dissipate into the ground

Answer

Establishes the connection between the circuit and the power source

Answer

Achieves a balanced distribution of electrical load

Question 52

In UK households, which type of fuse is most commonly employed?

Accepted Answer

BS 1362 fuse

Answer

Edison fuse

Answer

Blade fuse

Answer

Cartridge fuse

Question 53

When troubleshooting electrical issues, a common cause of flickering lights is:

Accepted Answer

Loose connections

Answer

Power surge

Answer

Overloaded circuit

Answer

Faulty dimming switch

Question 54

When replacing a blown fuse, it is crucial to:

Accepted Answer

Use a fuse with the same amperage rating as the original

Answer

Use a fuse with a lower amperage rating

Answer

Use a fuse with a higher amperage rating

Answer

Replace both fuses in the circuit simultaneously

Question 55

Which method is recommended for cleaning electrical contacts?

Accepted Answer

Using a specialized electrical contact cleaner

Answer

Sanding with sandpaper

Answer

Wiping with a damp cloth

Answer

Cleaning with soap and water

Question 56

When working with electrical circuits, which of the following is NOT a key safety consideration?

Accepted Answer

Wearing loose, flowing clothing

Answer

Ensuring a dry work environment

Answer

Using insulated tools

Answer

Avoiding contact with live wires

Question 57

What is the primary advantage of utilizing a residual current device (RCD) in an electrical circuit?

Accepted Answer

Provides protection against electric shock

Answer

Improves circuit efficiency

Answer

Reduces energy consumption

Answer

Prevents overheating