The book The Study of Electricity By the Deductive Method was written by author George Ira Alden Here you can read free online of The Study of Electricity By the Deductive Method book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Study of Electricity By the Deductive Method a good or bad book?
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30. This connection is known as the delta. The student will find it convenient to reproduce Fig. 31, and draw vertical lines through the d^;ree points in the figure. These lines, wherever drawn, will show the amount and direction of the voltage in each of the alternator circuits. Connection of alternator and transformers is shown in Fig. 32. Three-phase connections are also made in the form known as the Y or star connection. The evolu- tion of this type of connection is shown in Fig. 33. Simple... internal circuits of a transformer are shown in Fig. 34. As was previously stated, the power in a single- phase alternating-current circuit is given by the expression EI cos ^, where E = effective volts; / = effective amperes; B = lag angle; cos B = power factor. From inspection of Fig. 32, it will be seen that the line voltage per phase in the delta system is the same as the voltage per phase in the alternator. The current per line, however, is not equal to the current per alternator phase, but will be found from Fig.
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