Apparatus Subsection 74: Direct-current Commutating Machines: C. Commutating Machines
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-74 |
| Location | lines 12660-12763 |
| Status | candidate |
| Word Count | 288 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”D. C. COMMUTATING MACHINES 213 proportionally to the load, gives curves C, D, and E, which are higher at light load, but fall off faster at high load. A still further shift of brushes near the maximum current value even overturns the curve as shown in F. Curves E and F correspond to a very great shift of brushes, and an armature demagnetizing effect of the same magnitude as the field excitation, as realized in arc-light machines, in which the last part of the curve is used to secure inherent regulation for constant current. The resistance characteristic, that is, the dependence of the current and of the terminal voltage of the series generator upon 6000 6000 1 23 i 5 6 7 8 9 10 11 12 13 U 15 16 17 18 19 FIG.Source-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”... load. A still further shift of brushes near the maximum current value even overturns the curve as shown in F. Curves E and F correspond to a very great shift of brushes, and an armature demagnetizing effect of the same magnitude as the field excitation, as realized in arc-light machines, in which the last part of the curve is used to secure inherent regulation for constant current. The resistance characteristic, that is, the dependence of the current and of the terminal voltage ...Radiation / light
Section titled “Radiation / light”D. C. COMMUTATING MACHINES 213 proportionally to the load, gives curves C, D, and E, which are higher at light load, but fall off faster at high load. A still further shift of brushes near the maximum current value even overturns the curve as shown in F. Curves E and F correspond to a very great shift of brushes, and an armature demagnetizing e ...Magnetism
Section titled “Magnetism”... curves E and F in Fig. 116. Above a certain external resistance the series generator loses its excitation, while the shunt generator loses its excitation below a certain external resistance. Compound Generator 73. The saturation curve or magnetic characteristic A, and the load saturation curves D and G of the compound generator, are shown in Fig. 118 with the ampere-turns of the shunt field 214 ELEMENTS OF ELECTRICAL ENGINEERING as abscissas. A is the same curve as in Fi ...Chapter-Local Concept Hits
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- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
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