Apparatus Section 3: Synchronous Machines: Armature Reaction
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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-24 |
| Location | lines 8741-8906 |
| Status | candidate |
| Word Count | 1117 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”III. Armature Reaction 8. The magnetic flux in the field of an alternator under load is produced by the resultant m.m.f. of the field exciting current and of the armature current. It depends upon the phase rela- tion of the armature current. The e.m.f. generated by the field exciting current or the nominal generated e.m.f. reaches a maxi- mum when the armature coil faces the position midway between FIG. 48. — Model for study of armature reaction. Armature coils in position of maximum current. the field poles, as shown in Fig. 48, A and A'. Thus, if the armature current is in phase with the nominal generated e.m.f., it reaches its maximum in the same position A, A' of armature coil as the nominal generated e.m.f., and thus magnetizes the preceding, demagnetizes the following magnetSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”III. Armature Reaction 8. The magnetic flux in the field of an alternator under load is produced by the resultant m.m.f. of the field exciting current and of the armature current. It depends upon the phase rela- tion of the armature current. The e.m.f. generated by the field exciting current or ...Magnetism
Section titled “Magnetism”III. Armature Reaction 8. The magnetic flux in the field of an alternator under load is produced by the resultant m.m.f. of the field exciting current and of the armature current. It depends upon the phase rela- tion of the armature current. The e.m.f. generated by the field ...Radiation / light
Section titled “Radiation / light”... single-phase machine the armature reaction and thereby the resultant m.m.f. of field and armature is pulsating. The pulsation of the resultant m.m.f. of the single-phase machine causes a pulsation of its magnetic field under load, of double frequency, which generates a third harmonic of e.m.f. in the armature conductors. In machines of high armature reaction, as steam-turbine-driven single-phase alternators, the pulsation of the magnetic field may be sufficient to cause serious energy losse ...Alternating current
Section titled “Alternating current”III. Armature Reaction 8. The magnetic flux in the field of an alternator under load is produced by the resultant m.m.f. of the field exciting current and of the armature current. It depends upon the phase rela- tion of the armature current. The e.m.f. gener ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
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- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
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Ether-Field Interpretive Boundary
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