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Engineering Foundations Lessons

The following lessons explore foundational concepts in electrical and mechanical engineering. 

 

Basic Alternating Current Motors

The lesson begins by outlining the work of some of the early experimenters and the sequence which eventually led to the realization of the tremendous advantages of an alternating current system, particularly for large scale and long distance applications. A necessary preliminary to this lesson is the lesson entitled “Basic Direct Current Generators and Motors” to be found elsewhere in this series. The lesson ends with a section in which the students are invited to discuss with the teacher, various ways in which they think these demonstrations could be improved. 

 

The lesson begins by outlining the work of some of the early experimenters and the sequence which eventually led to the realization of how a changeable electro-magnetic field could be harnessed to other purposes.  From there the lesson goes on to demonstrate how electric currents, magnetic fields and electro-magnetic fields are so closely related.  A simple hands-on activity is provided at the end of the lesson. The lesson ends with a section in which the students are invited to discuss with the teacher, various ways in which they think these demonstrations could be improved. 

 

The lesson begins by outlining the work of some of the early experimenters and the sequence which eventually led to the realization of how a changeable electro-magnetic field could be harnessed to other purposes.  From there the lesson goes on to demonstrate how electric currents, magnetic fields and electro-static fields are so closely related.  A series of simple hands-on activities are provided at the end of the lesson. The lesson ends with a section in which the students are invited to discuss with the teacher, various ways in which they think these demonstrations could be improved. 

 

This lesson focuses on transformers as one of the most important components in any electrical system. Students engage in a hands-on activity where they build and test a simple but working transformer, using inexpensive materials.

 

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