DC GeneratorsDC GENERATOR THEORYDC GENERATOR THEORYDC generators are widely used to produce a DC voltage. The amount of voltageproduced depends on a variety of factors.EO 1.5 LIST the three conditions necessary to induce avoltage into a conductor.EO 1.6 Using the left-hand rule of generators,DETERMINE the direction of the magnetic field,the motion of the conductor, or the direction ofcurrent induced into a conductor.EO 1.7 DESCRIBE how terminal voltage of a DCgenerator is adjusted.EO 1.8 STATE the basis behind each of the four DCgenerator ratings.EO 1.9 LIST the four internal losses found in a DCgenerator.VoltageProductionRecall from Module 3, DC Circuits, that there are three conditions necessary to induce a voltageinto a conductor.1. A magnetic field2. A conductor3. Relative motion between the twoA DC generator provides these three conditions to produce a DC voltage output.TheoryofOperationA basic DC generator has four basic parts: (1) a magnetic field; (2) a single conductor, or loop;(3) a commutator; and (4) brushes (Figure 3). The magnetic field may be supplied by either apermanent magnet or an electromagnet. For now, we will use a permanent magnet to describea basic DC generator.Rev. 0 Page 5 ES-05
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