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A commutator is typically made from a combination of materials, primarily copper for its excellent electrical conductivity. The segments of the commutator are often insulated with a dielectric material, such as mica or plastic, to prevent short circuits between the conductive segments. In some cases, the commutator may also be coated with materials like silver to enhance conductivity and reduce wear.
What else can I help you with?
How does the commutator reverse the current in a motor?
Commutator is a split ring which reverses the current .when the commutator turns around due to magnetic force and because of it even the current gets reversed
Which type of motor uses a commutator?
Commutator is a device in a motor through which supply is fed.
Is a commutator the rotating element of a motor?
The commutator is part of the armature on a DC motor and this assembly is the rotating element of a motor.
What material is used to make a water wheel?
wood
What does the commutator in an electrical motor do?
If there is a commutator, it means you are dealing with a DC motor.The commutator acts like a switch to supply voltage to a revolving armature from the stationary brush assembly.A commutator has commutator bars, each seperated by mica insulation. Each coil of the rotating armature is connected to two bars that are in directly opposite positions across each diameter of the armature.The total number of commutator bars depends on the design of the windings on the armature: either "lap" or "wave" windings can be used on a DC motor or generator which is provided with a commutator.For more information see the answer to the Related question and also the Related link shown below.
What is use of commutator?
The commutator is used to convert the AC to DC
What is the use of Commutator?
The commutator is used to convert the AC to DC
Why commutator are not used in ac motors?
Because, the commutator segments are used for converting AC to DC.
Why carbon brushes are used in DC machines?
Carbon brushes used in DC machines because carbon is soft material and it does not generate spikes when contact with commutator
How do you make a commutator?
you ask mr ritter
In an electromagnet what are the springy pieces of metal or carbon that make contact with the commutator's contacts?
The springy pieces of metal or carbon that make contact with the commutator's contacts in an electromagnet are known as brushes. Brushes are responsible for delivering electrical current to the commutator, allowing the electromagnet to function as intended.
Is copper harder than mica in a commutator?
Yes, copper is generally harder than mica. In a commutator, copper serves as the conductive material, while mica is used as an insulating layer. Copper's hardness allows it to effectively conduct electricity and withstand wear, while mica's softness and flexibility allow it to provide insulation without cracking. Overall, the combination of these materials optimizes the performance of the commutator in electrical applications.
Why carbon brushes are most used in dc?
Carbon is used because it is soft and does not damage the commutator. This means that the brushes must be replaced at intervals, and the powdered carbon scraped out from between the segments of the commutator.
What are reasons for arcing at the commutator?
A shorted coil or shorted coils in the rotor will cause arcing at the commutator. It should also be noted that if the brushes are damaged badly enough where they make contact with the commutator, this can cause arcing. Oh, and let's not forget that a stuck brush or brush spring will prevent a brush from making proper contact with the commutator. Arcing can result from that, too.
Is commutator used for both ac to dc and dc to ac conversion?
Yes
Why brushes are made up of carbon?
Carbon brushes are commonly used in electrical systems due to their high conductivity, resistance to heat, and ability to easily adjust to different commutator surfaces. The carbon material offers low friction and wear properties, making it ideal for transferring current in electric motors and generators. Additionally, carbon brushes provide a stable performance over time and have a long service life.
What are the springy pieces of metal or carbon that make contact with the commutator's contacts?
It's a small block of graphite. The graphite acts as both the electrical contact to the commutator and as a lubricant to reduce drag and wear.
