Hardcover: 1120 pages
Publisher: Delmar Cengage Learning; 4th edition (May 28, 2008)
Product Dimensions: 9.5 x 8.2 x 1.8 inches
Shipping Weight: 4.2 pounds (View shipping rates and policies)
Average Customer Review: 4.2 out of 5 stars See all reviews (100 customer reviews)
Best Sellers Rank: #494,618 in Books (See Top 100 in Books) #317 in Books > Crafts, Hobbies & Home > Home Improvement & Design > How-to & Home Improvements > Electrical #1583 in Books > Engineering & Transportation > Engineering > Construction #2265 in Books > Engineering & Transportation > Engineering > Electrical & Electronics
This book is required reading for electrical apprentices in Canada. It has lots of practical information and illustrations that are good for the most part. However, I can't let the author off the hook for his incredibly sloppy treatment (poor understanding?) of basic theory. I blame this author for the fact that many electrical instructors are equally foggy on rudimentary theory and sloppy in their use of terminology, and pass their confusion on to generation after generation of students.A small example: the book states that the joule is the SI equivalent of the watt -- completely, inexcuseably fictional -- and then on the very next page it states a legitimate definition of a joule as being one watt-second. What newbie student needs this? The confusion between energy and power (the rate of energy conversion or work being done) rears its head elsewhere, e.g. in questions like "How many watts of heat are produced when... blah blah blah."The book's descriptions of atomic structure might've passed muster some decades ago, but they're sorely in need of a refresh.No appreciation is shown for the proper use of significant figures in calculations. The results of many of the calculations (unless they happen to produce a nice integer result) are stated arbitrarily to three decimal places, e.g. 120*0.0667 = 8.004. This precision isn't justified, and the irony is that a properly-rounded result would actually be more accurate. To compound the problem, solutions frequently involve the calculation of unneeded intermediate results, incurring cumulative errors. Why not fully solve the algebraic expressions for the desired unknowns before plugging in numbers?
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