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12 Cards in this Set

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  • Back
_______ magnetic poles attract each other, and like poles repel each other
unlike
materials that can be , magnetized are called
ferromagnetic
when there is current through a conductor, it produces an ______ _______ around the conductor
electromagnetic field
you can use the _____ _____ ______ to establish the direction of the electromagnetic lines of force around a conductor
left hand rule
an ________ is basically a coil of wire around a magnetic force
electromagnet
when a conductor moves within a magnetic field, or when a magnetic field moves relative to a conductor, a ______ is induced across the conductor
voltage
the faster the _____ ______ between a conductor and a magnetic field, the greater is the _____ ______
relative motion
induced voltage
_____ _____ _____ use current to sense the presence of a magnetic field
hall effect sensors
______ ______ convert mechanical power to dc electrical power
dc generators
the moving part of a generator or motor is called the ______; the stationary part is called the ______
rotor
stator
________ convert electrical power to mechanical power
dc motors
brushless dc motors use a ______ _______ as the rotor, and the stator is the ______
permanent magnet
armature