Apparatus Section 3: Synchronous Converters: Variation of the Ratio of Electromotive Forces
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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-82 |
| Location | lines 13796-13888 |
| Status | candidate |
| Word Count | 757 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”HI. Variation of the Ratio of Electromotive Forces 87. The preceding ratios of e.m.fs. apply strictly only to the generated e.m.fs. and that under the assumption of a sine wave of alternating generated e.m.f. The latter is usually a sufficiently close approximation, since the armature of the converter is a multi-tooth structure, that is, contains a distributed winding. The ratio between the difference of potential at the commu- tator brushes and that at the collector rings of the converter usually differs somewhat from the theoretical ratio, due to the e.m.f. consumed in the converter armature, and in machines converting from alternating to continuous current, also due to the shape of the impressed wave. When converting from alternating to direct current, under load the difference of potential at the commutator brushes is less than the generatedSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Waves / transmission lines
Section titled “Waves / transmission lines”HI. Variation of the Ratio of Electromotive Forces 87. The preceding ratios of e.m.fs. apply strictly only to the generated e.m.fs. and that under the assumption of a sine wave of alternating generated e.m.f. The latter is usually a sufficiently close approximation, since the armature of the converter is a multi-tooth structure, that is, contains a distributed winding. The ratio between the difference of potential ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... hape of impressed e.m.f. at the con- verter terminals, not only the wave of generator e.m.f., but also that of the converter counter e.m.f., may be instrumental. Thus, with a converter connected directly to a generating system of very large capacity, the impressed e.m.f. wave will be practically identical with the generator wave, while at the terminals of a converter connected to the generator over long lines with re- active coils or inductive regulators interposed, the wave of im- pres ...Radiation / light
Section titled “Radiation / light”... eing the ratio of maximum to effective of the sine wave on which the ratios in Section II were based), that is, by a "form factor" of the e.m.f. wave. With an impressed wave differing from the sine shape, there is a current of higher frequency, but generally of negligible mag- nitude, through the converter armature, due to the difference between impressed and counter e.m.f. wave.Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Waves / transmission lines: Map Steinmetz’s wave and line language onto modern distributed constants, propagation velocity, standing waves, and reflections.
- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
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Ether-Field Interpretive Boundary
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