Principles of Electrical Engineering
Principles of Electrical Engineering
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In our eReader you can find the full English version of the book. Read Principles of Electrical Engineering Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Principles of Electrical Engineering
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Similarly coil C will attain its maximum at a still later time. Accordingly, if we assume that the flux distribution across the pole face is sinusoidal, the voltages delivered by these three coils may be plotted on the same diagram as shown in Fig. 175 and will have the relations shown.
GENERATED VOLTAGES 343 Such a machine is called a three-phase generator. It is really three generators combined into one. Each one de- livers an alternating potential, but they are not in step. They come to a ma...ximum successively, pass through zero successively and so on. Most commercial alternators are of the three-phase type.
FIG. 175. Curves of the voltages generated in the three coils of a generator like that shown in Fig. 173. The flux distribution has been changed from that of Fig. 174 so that sine-wave forms are generated.
In the figure we have shown each coil side entirely situated in a single slot. Such an arrangement is called a concen- trated coil winding. It is, however, more usual to dis- tribute the coils through several adjacent slots.
What to read after Principles of Electrical Engineering?
You can find similar books in the "Read Also" column, or choose other free books by W H William Henry Timbie to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Similarly coil C will attain its maximum at a still later time. Accordingly, if we assume that the flux distribution across the pole face is sinusoidal, the voltages delivered by these three coils may be plotted on the same diagram as shown in Fig. 175 and will have the relations shown.
GENERATED VOLTAGES 343 Such a machine is called a three-phase generator. It is really three generators combined into one. Each one de- livers an alternating potential, but they are not in step. They come to a ma...ximum successively, pass through zero successively and so on. Most commercial alternators are of the three-phase type.
FIG. 175. Curves of the voltages generated in the three coils of a generator like that shown in Fig. 173. The flux distribution has been changed from that of Fig. 174 so that sine-wave forms are generated.
In the figure we have shown each coil side entirely situated in a single slot. Such an arrangement is called a concen- trated coil winding. It is, however, more usual to dis- tribute the coils through several adjacent slots.
What to read after Principles of Electrical Engineering?
You can find similar books in the "Read Also" column, or choose other free books by W H William Henry Timbie to read onlineMoreLess
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