Essentials of Electricity : A Textbook for Wiremen and the Electrical Trades; Direct Currents (Classic Reprint). Questo articolo non è disponibile.Essentials of Electricity : A Textbook for Wiremen and the Electrical Trades; Direct Currents (Classic Reprint)

Excerpt from Essentials of Electricity: A Textbook for Wiremen and the Electrical Trades; Direct Currents

The following brief text was developed from notes which the author has been using in short trade courses for students who wish to enter or to advance themselves in one or another of the electrical trades. It attempts to explain the underlying facts and laws of good electrical practice, which the really well-informed and efficient workman must understand, rather than to provide book descriptions of the mechanical operations of the electrical trades, which can be really learned only through continued practice in their performance. It is designed to be a systematized text for class and self-instruction, and, also, a book of electrical information to which frequent reference may be made during the day's work. For convenience in the latter purpose, it is bound in a pocket size and with semiflexible covers.

As is implied in the title, only such material has been included in the text as is regarded to be absolutely essential to the object in view. The order in which the various topics arc taken up is that which the author has found to be most teachable. The method of presentation is designed both to arouse and hold interest, and to furnish the easiest approach to new or more difficult ideas. For this reason, the author's plan is to build outward, and by very small steps, from the starting point of the reader's own experience in the commercial shop or the school laboratory. Students in short trade courses must acquire a large fund of information in an extremely short time.

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