Elementary Electrical Calculations: A Manual of Simple Engineering Mathematics, Covering the Whole Field of Direct Current Calculations, the Basis of Alternating Current Mathematics, Networks and Typical Cases of Circuits, With Appendices on Special Subjects

Excerpt from Elementary Electrical Calculations: A Manual of Simple Engineering Mathematics, Covering the Whole Field of Direct Current Calculations, the Basis of Alternating Current Mathematics, Networks and Typical Cases of Circuits, With Appendices on Special Subjects

This book is designed to give in simple form what may be termed a foundation for the study of electrical calculations. The operations described require only an elementary knowledge of mathematics. It is a feature of electrical science that although it is built up on a basis of mathematics, a great part of the engineering calculations is comprised within the limits of arithmetic, while elementary algebra carries it a long way further. The algebra required in every day electrical work is so simple that it may be learned in a very short time, and it is perfectly fair to say that many use it daily without realizing that they do so. Some there are who might even be repelled from the subject if told that algebra was required in its operations, yet such may employ Ohm's law without realizing that it is expressed as an algebraic equation.

Very few calculations in this book call for the use of higher algebra than is involved in the treatment of Ohm's law, and the arithmetic employed is simpler than that used in commercial calculations. Where more advanced algebra is required, as in the solution of net-works, the matter is placed towards the end. The complex variable and the graphic solutions of alternating current problems are not employed, as they are outside the scope of the book.

In the Appendix some illustrations of geometric, of more involved algebraic, and of simple calculus solutions and demonstrations are given, which may interest those with some knowledge of the higher mathematics.

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