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Module 9 - Alternating Current: Reactance, Impedance & Power Factor

 
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Module 9 - Alternating Current: Reactance, Impedance & Power Factor

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Alternating Current: Reacance, Impedance & Power Factor

Description:

Calculation of the different resistance introduced in an ac circuit by capacitors, inductors, and resistors and the concept of power factor

Upon the completion of this module, you will understand how to:

1. Calculate the capacitive reactance of a circuit, given the value of the capacitor, frequency, and voltage.
2. Describe the relation between capacitive reactance and frequency.
3. Calculate the inductive reactance of a circuit, given the value of the inductor, frequency, and voltage.
4. Describe the relation between inductive reactance and frequency.
5. Calculate the impedance of a circuit, given the values of the inductive and capacitive reactance, and the resistance.
6. Explain the term "Power Factor."
7. Define "apparent" power and the "true" or "actual" power of a circuit.
8. Calculate the power factor.
9. Explain three-phase power.

Topic 1: Reactance

* Topic Introduction and Objectives
* Three Forms of Reactance
* Capacitive Reactance: Equation
* Calculating Capacitive Reactance: Example
* Calculating Reactance at Higher Frequency
* Inductive Reactance: Equation
* Calculating Inductive Reactance: Example
* Calculating Inductive Reactance at Higher Frequency
* Check-Point Question
* Topic Summary

Topic 2: Impedance

* Topic Introduction and Objectives
* Impedance: Equation
* Calculating Impedance
* Calculating Impedance for an AC Solenoid Coil
* Check-Point Question
* Topic Summary

Topic 3: What Is Power Factor?

* Topic Introduction and Objectives
* Apparent Power Versus Actual Power
* The Iron Effect
* Topic Summary

Topic 4: High and Low Power Factors

* Topic Introduction and Objectives
* Ratio of Actual Power to Apparent Power
* Three Reasons Low Power Factor is Costly
* Understanding Apparent Power and Actual Power
* Calculating Power Factor Percentage
* Check-Point Question
* Topic Summary

Topic 5: Three-Phase Power

* Topic Introduction and Objectives
* Sine Waves for Three-Phase Circuit
* Check-Point Question
* Topic Summary
* Assessment

 

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