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WorksheetsDC Electric Motor terms
Total questions: 10
Worksheet time: 5mins
In a DC Motor, the coil of the rotor turns into an electromagnet when
the rotor rotates inside the stator
electricity (current) flows through the coil
the rotor is turned by the axle
the it sits int the field of the stator
The rotor is the name of the part that is
the rotating coil inside the stator's field
the stationary magnets around the rotating coil
the spring loaded parts that contact the commutator
the split ring that carries electricity to the coil
The stator is
the sets of coiled wires that create the armature
the split ring that carries electricity to the rotor
the spring loaded connections that touch the commutator while it rotates to carry current
the magnets surrounding the rotor that create the magnetic field that the coil is attracted and repelled by causing motion.
The brushes in an electric motor
the split rings that rotate in a motor
the coil that create the electromagnetic field
Are spring loaded connectors that carry electricity to the rotor by brushing against the commutator as it rotates
the magnets surrounding the rotor
The commutator is
The spring-loaded connections that keep contact with the stator
the split ring that swaps the coils ends between positive and negative as the coil rotates
the magnets that cause the electromagnet to attract and repulse
the coil that is also known as the armature
An electromagnet can be made with a coil of wire around a nail if
the wire is magnetized by a compass
the wire has a current running through it
the wire is touching 2 magnet
the nail is touching a battery on the anode
The greater the number of windings (the number of times it is wrapped around) in an electromagnet's coil
the stronger the magnet is
the less the magnet will pick up
the more current it takes to create the electromagnet
the slower the compass needle moves to the wire
A compass moves to point to an wire with current running in it because
the compass is attracted to the metal wire itself
a compass is used to detect current
the wire has a magnetic field around it because of the moving electrons
the compass moves to point to the batteries
We learned in the video that adding more than one coiled wire inside the motor causes the motor to
use more magnetism
run more smoothly, less jerking as the coil gets to the top
solves the problem of wires getting tangled
requires less energy to power
Which part may perhaps wear out the fastest in the motor?
The brushes because they are always sliding against the commutator
the coils because the electric current makes them weak
the stator because it is always moving
the rotor because the stator pulls and pushes it too hard
