Delmar's Standard Textbook of Electricity

Abstract

The same set of numbers will again be multiplied, but this time each answer will be reentered after rounding off the number to one place after the decimal. The answer is 14.617100. Notice that all three answers are different, but all three are essentially correct. The most accurate answer is 14.577480, and the least accurate answer is 14.617100. Although these answers may look substantially different, they are within approximately 1% of each other. Another consideration is problems that contain multiple steps. The more steps it takes to solve a problem, the more chance there is for inaccuracy. In most instances in this text, the answers were left in the display of the calculator, which permits the greatest degree of accuracy. When numbers had to be re-entered, they were taken to 3 places of accuracy. When you work a problem in this text and your answer is different, consider the degree of difference before concluding that your answer is incorrect. New to this Edition The sixth edition of Delmar’s Standard Textbook of Electricity continues to remain true to the comprehensive nature and visually appealing style that are its trademark features but will now offer more emphasis on the practical approach to electrical theory. New to this edition: Coverage of AC servo motors Coverage of AC torque motors Updated photographs Extended coverage of motor nameplate data Extended coverage of RL time constants Extended coverage of AC waveforms “Electrical Occupations” contains information about electrical personnel, building codes, and solar and wind energy.