Mar 21, 2023
2022-2023 Lane Community College Catalog
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# APR 191 - Electrical Theory 2

1-4 Credit(s)

Second course of a two-term sequence in electrical theory. This course covers basic AC circuits and components, right triangle mathematics, RLC circuits, filters, and resonant circuits and RL/RC transient circuits. In the lab students will build and troubleshoot basic AC circuits using the oscilloscope, function generator, and DMM.

Prerequisite: ET 129  OR APR 190
Learning Outcomes
Upon completion of this course, the successful student will be able to:
1. Effectively use mathematical skills to perform calculations common to the electrical trades
2. Identify different types of capacitors and inductors, read their values from different types of identification codes and know how to test them with various types of measuring equipment
3. Define the units of capacitance and inductance and explain how these devices charge and discharge in RC and RL circuits
4. Calculate the total value of capacitors that are connected in series and/or parallel
5. Identify high pass, low pass, band pass and notch filters
6. Identify dot polarities to determine the phase difference between the primary and secondary sides of a transformer
7. Recognize the basic types of common transformers and perform power, voltage and current calculations on both the primary and secondary sides of the transformer
8. Perform AC reactance calculations for capacitors and inductors
9. Demonstrate a working knowledge of trigonometry in the study of AC reactive components and their phase angles
10. Analyze RC, RL and RLC circuits for individual currents, voltage and power drops and perform accurate impedance calculations for these circuits
11. Contrast the differences between parallel and series RLC circuits in AC applications
12. Based on component values, calculate a circuits resonant frequency, half power points, Q and bandwidth
13. Explain the characteristics of a resonant circuit as it relates to power factors and the transfer of information
14. Demonstrate a working knowledge of the oscilloscope as a tool to analyze voltage, frequency and phase differences in complex AC circuits
15. Communicate effectively with others in a technical manner using specific nomenclature in the proper context