Electrical Level 2 Module 5 Questions
and Answers | Latest Version | 2024/2025
| Correct & Verified
How does a light dimmer work in a circuit?
✔✔ It adjusts the voltage supplied to the light, controlling the brightness
What is the role of a transformer in power distribution?
✔✔ To adjust the voltage levels before the power reaches homes or businesses
How does electricity travel through a wire?
✔✔ Electrons flow from the negative side of the power source to the positive side
What is the difference between a load and a neutral wire?
✔✔ The load wire carries current to the device, while the neutral wire carries current away
Why do we use color codes for electrical wires?
✔✔ To easily identify their purpose and prevent mistakes during installation
1
,What is a “dead short” in an electrical circuit?
✔✔ A direct connection between the hot and neutral wires, causing a high current flow
What type of wire is best for outdoor installations?
✔✔ Wire with a UV-resistant, weatherproof coating to protect it from the elements
What is a ground fault in electrical terms?
✔✔ An unintended path of electrical current flowing to the ground, usually through an
unintentional contact
How does a multimeter help troubleshoot electrical problems?
✔✔ It measures voltage, current, and resistance to identify issues in a circuit
What is a common cause of circuit breaker trips?
✔✔ Overcurrent or short circuits caused by faulty wiring or damaged components
What does "voltage drop" mean in an electrical circuit?
✔✔ The reduction in voltage that occurs as current flows through resistive elements like wires
2
, What does an electrical load center do?
✔✔ It distributes electricity from the main service panel to individual circuits
Why is it important to connect the ground wire to a system?
✔✔ To prevent electric shock by directing stray electricity to the earth safely
What is an electrical junction box used for?
✔✔ To house and protect electrical connections, preventing accidental contact with live wires
How does an inverter convert DC to AC?
✔✔ It uses semiconductor devices to convert direct current into alternating current through a
series of switches
What happens when a capacitor fails in a motor circuit?
✔✔ The motor may fail to start, or it will start with difficulty and may run inefficiently
What is an electrical arc?
3
and Answers | Latest Version | 2024/2025
| Correct & Verified
How does a light dimmer work in a circuit?
✔✔ It adjusts the voltage supplied to the light, controlling the brightness
What is the role of a transformer in power distribution?
✔✔ To adjust the voltage levels before the power reaches homes or businesses
How does electricity travel through a wire?
✔✔ Electrons flow from the negative side of the power source to the positive side
What is the difference between a load and a neutral wire?
✔✔ The load wire carries current to the device, while the neutral wire carries current away
Why do we use color codes for electrical wires?
✔✔ To easily identify their purpose and prevent mistakes during installation
1
,What is a “dead short” in an electrical circuit?
✔✔ A direct connection between the hot and neutral wires, causing a high current flow
What type of wire is best for outdoor installations?
✔✔ Wire with a UV-resistant, weatherproof coating to protect it from the elements
What is a ground fault in electrical terms?
✔✔ An unintended path of electrical current flowing to the ground, usually through an
unintentional contact
How does a multimeter help troubleshoot electrical problems?
✔✔ It measures voltage, current, and resistance to identify issues in a circuit
What is a common cause of circuit breaker trips?
✔✔ Overcurrent or short circuits caused by faulty wiring or damaged components
What does "voltage drop" mean in an electrical circuit?
✔✔ The reduction in voltage that occurs as current flows through resistive elements like wires
2
, What does an electrical load center do?
✔✔ It distributes electricity from the main service panel to individual circuits
Why is it important to connect the ground wire to a system?
✔✔ To prevent electric shock by directing stray electricity to the earth safely
What is an electrical junction box used for?
✔✔ To house and protect electrical connections, preventing accidental contact with live wires
How does an inverter convert DC to AC?
✔✔ It uses semiconductor devices to convert direct current into alternating current through a
series of switches
What happens when a capacitor fails in a motor circuit?
✔✔ The motor may fail to start, or it will start with difficulty and may run inefficiently
What is an electrical arc?
3
