DC Machine _EEE
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![Page 1: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/1.jpg)
DC MACHINE
![Page 2: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/2.jpg)
Construction of DC Machine
![Page 3: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/3.jpg)
![Page 4: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/4.jpg)
Lap and Wave Winding
![Page 5: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/5.jpg)
Generation of AC Voltage
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Generation of DC Voltage
![Page 7: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/7.jpg)
![Page 8: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/8.jpg)
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Generation of uniform DC Voltage
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EMF Equation
pathsparallelofNoA
conductorsArmatureofNoZ
rpminspeedN
polesofNoP
poleFluxwhere
VoltA
ZNPE
/
60
![Page 11: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/11.jpg)
Types of DC Generator
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Separately Excited Generator
![Page 13: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/13.jpg)
Applications of DC Generator
Separately excited – Electroplating, electro refining
Shunt generator- Battery charging and ordinary lighting purpose
Series Generators-Booster on DC feeders, as a constant current
generator for welding generator and arc lamps
Cumulative compound generator- to transmit energy over a long
distance
Differential Compound Generators- Rarely used, electric arc welding
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DC Generator and Motor
Prime Mover
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Force experienced by current carrying conductor and coil
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Types of DC Motor
![Page 17: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/17.jpg)
Characteristics of DC shunt Motor
T vs IaN vs Ia
N vs T
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DC Series motor characteristics
N vs T
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DC Motor Starter
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Three Point Starter
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DC Shunt Motor –Speed Control
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DC Shunt Motor –Speed Control
![Page 23: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/23.jpg)
DC Series Motor-Speed Control
![Page 24: DC Machine _EEE](https://reader034.fdocuments.in/reader034/viewer/2022050802/55cf91cf550346f57b90e62e/html5/thumbnails/24.jpg)
DC Series Motor-Speed Control