Electrical Module 10 Questions and Answers | Latest Version | 2024/2025 | Rated A+

Electrical Module 10 Questions and Answers | Latest Version | 2024/2025 | Rated A+ What does a voltmeter measure? A voltmeter measures the electrical potential difference between two points in a circuit, indicating the voltage level. Why should a switch be installed in the live wire of a circuit? A switch is installed in the live wire to control the flow of electricity and ensure that when the switch is off, no current is flowing through the circuit. What is the function of a transformer in an electrical system? A transformer changes the voltage level of alternating current (AC), stepping it up or down depending on the needs of the circuit or device. What is the difference between alternating current (AC) and direct current (DC)? Alternating current (AC) changes direction periodically, while direct current (DC) flows in one direction only, making AC suitable for long-distance transmission and DC used in batteries and electronics. 2 Why is it important to use the correct wire size in electrical circuits? The correct wire size ensures that the wire can safely carry the amount of current needed for the circuit without overheating or causing a fire hazard. What is an electrical panel used for? An electrical panel houses circuit breakers or fuses and distributes electricity to various parts of a building, providing overcurrent protection and control. What does a GFCI (Ground Fault Circuit Interrupter) do? A GFCI detects any difference in current between the hot and neutral wires and shuts off power if an imbalance occurs, preventing electric shocks. What is the role of a neutral wire in an electrical circuit? The neutral wire provides a return path for the current to the power source, completing the circuit. How does a capacitor function in an electrical circuit? 3 A capacitor stores and releases electrical energy, smoothing out voltage fluctuations and filtering noise in circuits. What is the purpose of a relay in an electrical system? A relay uses a low-power signal to control a higher-power circuit, acting as an automatic switch for devices like motors or lights. Why is insulation important in electrical wiring? Insulation prevents unintended contact with conductors, reducing the risk of electric shock, short circuits, and fires.