M&G

Motors

r

Motor EffectA current in a field has a palm pushAmpere's lawDC Motors have constant switched force, Maximum torque at max distance flat to fieldComutators make Coil always the wrong way

a

Generators

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Faraday Effect: Motor Effect separate + from -Moving conductor in a field is a Battery Lenz's Law - eddy currents maintain field and applies a drag force

a

Lenz's Law

Power

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DC Generator is reverse DC motorAC Generator has windings on outside3 phase has constant torquePowerline insulation and lightening wires

a

Transformers

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Electricity > Mag Field > ElectricityTransformers - An electrically powered electricity generatorMore turns more voltsLaminations to hold field but stop current

a

AC Motors

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Universal - all coils - with core opposing outerInduction - Outer field drives eddy current in core rather than from slip rings

a

References

HSC online

a

UNSW

a