AC Circuit Analysis | Electrical Switches

Engineering
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Sine | Cosine | Trigonometry

In AC circuits, sine, cosine and other trigonometric functions represent the alternating current waveform. These functions help analyze the circuit’s behavior in terms of its frequency, amplitude and phase. Understanding the principles of AC circuit analysis and electrical switches is essential for designing and troubleshooting electrical circuits in various applications, such as power systems,
telecommunications and electronics.

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Impedance vs. Frequency

Alternating circuit (AC) circuit analysis involves the study of electrical circuits that operate with AC. One of the most important concepts in AC circuit analysis is impedance, which is the total opposition to current flow in a circuit. Impedance is a complex quantity that depends on the frequency of the AC signal, and can be made up of various circuit components, such as resistors, capacitors and inductors.

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Euler’s Formula

In alternating current (AC) circuit analysis, Euler’s formula is used to represent sinusoidal (meaning it’s relating to sine curves or waves) signals as a complex exponential function. This representation allows for simpler calculations using complex arithmetic and can also reveal certain properties of the signal that may be useful for analysis or design.

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3-Phase Power

Three-phase power is a type of electrical power that uses three separate waveforms, each separated in phase by 120 degrees. It is commonly used in engineering and industrial applications because it provides higher efficiency, smoother power delivery, and better power transmission over long distances compared to single-phase power.

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Grid Control & Safety

Alternating Current (AC) circuit analysis refers to the study of electrical circuits that operate using an AC power source. This includes analyzing the behavior of various electrical components such as resistors, capacitors and inductors, as well as understanding the principles of voltage, current, resistance and power in AC circuits.

Teacher Resources

Various career awareness opportunities are made available to you and your school including:

  • classroom presentations about NPPD careers or specific careers if a subject matter expert is available;
  • attending your school's career fair;
  • coordinating student tours of NPPD facilities; and
  • making career materials available to you

Additional Resources

If you would like more information on any of the opportunities we have to offer, contact Careers Outreach Specialist Kim Liebig.

Career Interest Assessment

With fun, interactive tools and informational resources, Nebraska Career Connections will help you learn about the careers you may be interested in, plan for education, and prepare for career success. Build a career around your unique interests and skills.

5–6th Graders: Explore the six career fields to discover the world of work.

7–8th Graders: Learn about the 16 Career Clusters, start a Personal Learning Plan, and find out your options after high school.

9–12th Graders: Research your career pathway options more in depth and start making college, financial aid, and scholarship decisions.

Postsecondary Students: Make sure you are on track with your plans. And don't forget to create a resume, practice interviewing skills, and look for job opportunities in Nebraska.

To log on to Nebraska Career Connections to take the Assessment you will need to contact your school counselor for a batch code.

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