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NCCER Electrical Level 1 Mod 4 Electrical Theory Questions and Answers | Latest Version | 2024/2025 | Correct & Verified £7.49
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NCCER Electrical Level 1 Mod 4 Electrical Theory Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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NCCER Electrical Level 1 Mod 4 Electrical Theory Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the primary purpose of an electrical circuit? To provide a path for electrical current to flow and power devices What does a watt-hour meter measure? The...

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  • December 18, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • nccer electrical level 1 mod 4 electrical theory q

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  • NCCER Electrical Level 1 Mod 4 Electrical Theory
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NCCER Electrical Level 1 Mod 4
Electrical Theory Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What is the primary purpose of an electrical circuit?


✔✔ To provide a path for electrical current to flow and power devices




What does a watt-hour meter measure?


✔✔ The amount of electrical energy consumed over time




What is the function of an electrical panel’s main disconnect switch?


✔✔ To cut off all power to the electrical circuits in the building




What is the difference between a conductor and a semiconductor?


✔✔ A conductor allows electricity to flow easily, while a semiconductor has properties between

a conductor and an insulator




What is a fuse's primary role in a circuit?


1

,✔✔ To protect the circuit by breaking the connection when the current exceeds a certain limit




What is the effect of adding more resistors in series?


✔✔ The total resistance increases, which reduces current flow




What is the function of a solenoid in an electrical system?


✔✔ To convert electrical energy into mechanical motion




What is the difference between a synchronous motor and an induction motor?


✔✔ A synchronous motor operates at a constant speed, while an induction motor's speed varies

with the load




What is a common cause of voltage spikes in electrical systems?


✔✔ Lightning strikes or switching on and off heavy electrical equipment




What is the main function of a relay in an electrical circuit?


✔✔ To use a small current to control a larger current in a separate circuit




2

, What is impedance in an electrical circuit?


✔✔ The total resistance to current flow, including both resistance and reactance




What is the purpose of a light dimmer switch?


✔✔ To adjust the brightness of a light by varying the voltage applied to the light bulb




What is the role of a busbar in an electrical system?


✔✔ To distribute electrical power to multiple circuits from a single source




What does a power factor represent in an electrical system?


✔✔ The efficiency with which electrical power is converted into useful work




What is the function of a circuit breaker?


✔✔ To automatically interrupt the flow of current in the event of an overload or short circuit




What does a capacitor store in an electrical system?


✔✔ Electrical energy




3

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