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close this bookElectrical Machines - Basic Vocational Knowledge (IBE - Deutschland; 144 pages)
View the documentIntroduction
Open this folder and view contents1. General information about electrical machines
close this folder2. Basic principles
close this folder2.1. The magnetic field
View the document2.1.1. Definition and presentation of the magnetic field
View the document2.1.2. Magnets Magnetic field
View the document2.1.3. Magnetic field of a current-carrying conductor
View the document2.1.4. Magnetic field of a current-carrying coil
View the document2.1.5. Magnetic fields in electrical machines
Open this folder and view contents2.2. Measurable variables of the magnetic field
Open this folder and view contents2.3. Force action of the magnetic field
Open this folder and view contents2.4. Voltage generation through induction
Open this folder and view contents3. Execution of rotating electrical machines
Open this folder and view contents4. Synchronous machines
Open this folder and view contents5. Asynchronous motors
Open this folder and view contents6. Direct current machines
Open this folder and view contents7. Single-phase alternating current motors
Open this folder and view contents8. Transformer
 

2.1.1. Definition and presentation of the magnetic field

The area within which magnetic actions arise is called the magnetic field.

Field lines are employed to display graphically magnetic fields. Figure 1 shows a current-carrying conductor. Iron powder scattered at the level of this arrangement falls into concentric circles. This leads to a model presentation of field lines.


Figure 1 - Magnetic field and field line sequence made visible by iron powder

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