When a current is flow through the armature conductor, a magnetic field is set up around the conductor. The interaction between this magnetic field flux and main field flux is called armature reaction. The armature magnetic field has two effects- · If demagnetizer or weakens the main field flux. For the weakness of the main field flux the generated voltage is reduced. · It’s cross magnetizing component produces spark at the brushes due to the resultant field flux. Which is not in the same direction as the original main field flux but runs from the tip of one of the poles across the armature to the tip of the other pole. Monocrystalline solar cell used in Smartphone Mechanism of Solar Collector...
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