ECE 252 Introduction to Electrical Engineering

Module 12. Power in AC Circuits

Course Objectives/Outcomes: Students who complete this course will be able to:

• Calculate real, reactive, and apparent power in AC circuits and networks.

Module Objectives/Outcomes: Students who complete this module will be able to:

1. Calculate real and apparent power using power factor.
2. Sketch and label power triangles for motors, capacitors, and resistive loads.
3. Sketch and label a composite power triangle, given device power triangles.
4. Calculate rms current in a system of motors and devices.
5. Apply capacitors to correct power factor.
6. Calculate input motor power in watts given motor efficiency and output power in horsepower.
7. Calculate monthly electrical charges for an industrial user of electricity.

Assignment:

• Read Lesson 12. [Module Objectives 1-7]
• Watch the videos. [Module Objectives 1-7]
• Solve Tutorial 12. [Module Objectives 1-6]
• Solve and submit Homework 12. [Module Objectives 1-7]
• Solve Practice Quiz 12. Try to do it in under 20 minutes. [Module Objectives 1-7]
• Check your practice quiz answers against the solution below. [Module Objectives 1-7]
• Now you should be ready for Quiz 12. [Module Objectives 1-7]

Select an option:

Lesson 12 Power in AC Circuits. [Module Objectives 1-7]

Streaming Videos

Video L12-1 AC Power Part 1. [Module Objectives 1-4]

Video L12-2 AC Power Part 2. [Module Objectives 1-4]

Video L12-3 Practice Problem Part 1. [Module Objectives 1-6]

Video L12-4 Practice Problem Part 2. [Module Objectives 1-6]

Video L12-5 Practice Problem Part 3. [Module Objectives 1-6]

Video L12-6 Utility Rate Structures. [Module Objective 7]

Video L12-7 Maximum Power Transfer for AC. [Extra Credit]

Video L12-8 Review. [Module Objectives 1-7]

Video L12-1 AC Power Part 1. [Module Objectives 1-4]
Video L12-2 AC Power Part 2. [Module Objectives 1-4]
Video L12-3 Practice Problem Part 1. [Module Objectives 1-6]
Video L12-4 Practice Problem Part 2. [Module Objectives 1-6]
Video L12-5 Practice Problem Part 3. [Module Objectives 1-6]
Video L12-6 Utility Rate Structures. [Module Objective 7]
Video L12-7 Maximum Power Transfer for AC. [Extra Credit]
Video L12-8 Review. [Module Objectives 1-7]

Tutorials

Tutorial 12 Power in AC Circuits. [Module Objectives 1-6]
Tutorial 12A Maximum Power Transfer in Complex Circuits [extra credit assignement]

Practice Quiz

Practice Quiz 12. [Module Objectives 1-6]
Practice Quiz 12 Solution. [Module Objectives 1-6]