OVERVIEW

This chapter assumes the reader completed an introductory electrical engineering or circuits course but needs to review points of theory and application. For instance, the solution for a single voltage source in a series circuit might easily come to mind, but if one changed the circuit by inserting another source (multiple source network) that may be acting as a load, the method of solution may not be readily apparent without a short review.

This chapter presents the portions of theory that are relevant to the EIT exam. An attempt is made to reduce the more detailed theory to the level for the expected problem and to leave out the more abstract formal development of a solution. For example, rather than setting up a three-phase ac problem for a complete solution-including possibly an unbalanced network-this review will assume the more likely case of all three legs of the circuit being part of a balanced network and proceed with a much simpler method of solution.

The objective of this presentation will be to jog the memory so that one can feel comfortable with the simpler type of "quick solution" problems expected on the examination. It should be noted that multiple choice answers for any such problems are significantly different which allows one to quickly locate the correct answer if the simplest possible solution can be found. As an example, in a series ac circuits problem one can frequently plot a phasor solution with ruler and protractor that is...