EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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armature, permanent magnets, commutator, brushes
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armature, rod, axle, brushes
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permanent magnets, communator, axle, magnets
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None of the above
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Detailed explanation-1: -Powder metal components for motors generally consist of iron, nickel, and cobalt. Iron is the cheapest of the three, so many designers turn there first. Cobalt is rarely used on its own, but is sometimes added to iron. Cobalt gives your part more saturation induction.
Detailed explanation-2: -The armature is an integral part of the motor (or generator), as this is the component that carries the alternating current (AC) in an electric machine. The armature conducts AC, even on Direct Current (DC) machines using the commutator (which reverses current direction every so often) or due to electronic commutation.
Detailed explanation-3: -As the name implies, an EV permanent magnet motor uses permanent magnetics on the rotor (see the graphic below). The alternating current applied to the stator results in rotation of the rotor. Because the magnets are permanently magnetized, the rotor runs synchronously to the switching AC current.
Detailed explanation-4: -1) The Rotor. The rotor is the moving part of your electric motor. 3) The Bearings. 4) The Windings. 5) The Air Gap. 6) The Commutator. What Do All of These Components Have in Common? 13-Nov-2019