Excerpt from Direct and Alternating Current Manual: With Directions for Testing and a Discussion of the Theory of Electrical Apparatus
This manual consists of a series of tests on direct and alternating current apparatus, selected with reference to their practical usefulness and instructive value. While the book has been prepared primarily for students, it is hoped that it may prove helpful to others. The presentation is in the form of a laboratory manual; the author, however, has not restricted himself to a mere statement of instructions for conducting tests but has directed the reader's attention to the principles that underlie the various experiments and to the significance of the results. Experience has shown that theory is more readily grasped when it is thus combined with its application and that the application is more intelligently made when its broader bearings are understood. The material has been systematically arranged and it is believed that the book may be found useful for reference or as a text, aside from its use in testing.
From the text proper are excluded specialized tests and those that are of limited application or require unusual testing facilities, such tests being described in the appendices to the several experiments. These appendices thus permit a fuller discussion of some of the details of the tests and various modifications than could be included to advantage in the text proper. The tests in general are those that can be performed in any college laboratory.
No attempt has been made to make the work exhaustive or complete; on the contrary every effort has been made to eliminate matter of secondary importance and that which is of questionable technical or pedagogical value.
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