Apparatus Subsection 45: Direct-current Commutating Machines: C. Commutating Machines 177
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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-45 |
| Location | lines 10737-10777 |
| Status | candidate |
| Word Count | 250 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
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Section titled “Opening Source Excerpt”D. C. COMMUTATING MACHINES 177 since the one side of the coil enters or leaves the field before the other. Therefore, in commutating machines it is seldom that a pitch is used that falls short of full pitch by more than one or two teeth, while in induction and synchronous machines occasionally as low a pitch as 50 per cent, is used, and two-thirds pitch is frequently employed. For special purposes, as in single-phase commutator motors fractional-pitch windings are sometimes used. 41. Series windings find their foremost application in machines with small currents, or small machines in which it is desirable to have as few circuits as possible in multiple, and in machines in which it is desirable to use only two sets of brushes, as in smaller railway motors. In multipolar machines with manySource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”D. C. COMMUTATING MACHINES 177 since the one side of the coil enters or leaves the field before the other. Therefore, in commutating machines it is seldom that a pitch is used that falls short of full pitch by more than one or two teeth, while in induction and synchronous machines occasionally as low a pitch as 50 per cent, ...Chapter-Local Concept Hits
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