About the video
This lesson covers the fundamentals of motor controls, starting with the historical use of knife switches and the evolution to modern contactors. You’ll learn how contactors, with their electromagnets and armatures, allow for remote operation of motors. The video explains the necessity of short circuit and overload protection, detailing the roles of molded case circuit breakers (MCCBs), magnetic circuit protectors (MCPs), and overload relays. The lesson emphasizes the importance of these components in protecting motors from electrical faults and ensuring safe and efficient operation. By understanding these principles, you can effectively control and protect motors in various industrial applications. To get started, go to the Lesson Content tab and click on the video.
About the quiz
Each lesson contains a video, and is followed up with a simple quiz. Quizzes review information discussed within the video, with each question providing an answer justification. Helping to reinforce correct answers and helps clarify any mistakes through code citations, excerpts, and explanations, so you can better understand the material.
Charges
Charges are rewards you earn for engaging in our learning system. You receive charges for completing both the video and the quiz in each lesson. The amount of charges available for each lesson is displayed in the “Lesson Features” box on the right. The charges you earn are based on the time it takes you to complete the lesson, which is also indicated in “Lesson Features.”