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The brushes are made up of carbon because it has low friction as compare to other materials and cheaply also, but carbon has high resistance due to which output can vary. So we mix carbon with copper metal to reduce resistance.
Note that we cannot use copper only for brushes because it creates more friction with commutator.
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What are universal motor brushes made of?
the brush is a peice of carbon that is attached to the startor by a brush holder.
How are machines made?
As with most modern machines, they are made in factories.
How is graphite used by people?
we use graphite by ever time we use a pencil thats one way we use graphite. Graphite is also used in the making of sports equipment and other every day items since graphite is a lighter material to work with. Like a badminton racquet can be made from graphite to make it lighter.
Does a ac generator have a brush?
AC generators (alternators) usually have a dc supply to the rotor coils, supplied through slip-rings with carbon brushes. Because the slip-rings can be made very smooth the life of the brushes is greatly extended when compared with brushes on the commutator of a dc motor or an ac commutator motor. Cars generate electrical power with a three-phase AC alternator, connected directly to the battery through rectifier diodes. The alternator voltage is controlled by the voltage regulator, which works by controlling the dc supply to the rotor.
Who made the abacus and what other machines did he or she made?
the chinese and they made the wheel barrow
What material is graphite made of?
Graphite is an allotrope of Carbon. It is made of Carbon.
What is graphite made of?
Graphite is a form of carbon.
Is graphite running out?
No, Graphite is a form of Carbon and can be made from carbon if required.
Is graphite made out of graphite?
It is a form of carbon.
What is a carbon made in a pencil?
Pencils are made by graphite. It is a form of carbon. Graphite has sp2 hybridized carbon atoms.
Will graphite rust?
No. Graphite is not a metal, it's made of Carbon.
How are diamonds and graphite alike?
Both diamond and graphite are allotropes of carbon.
Is graphite magnetic?
Graphite is not magnetic as it is made out of carbon. E.g; Pencil lead is mostly made out of graphite, it is NOT magnetic.
Are carbon and graphite same materialwhy?
Carbon fibers are made almost entirely of graphite. Carbon fiber composite, sometimes referred to as "carbon fiber", is made of carbon fibers and a matrix material, which is usually a plastic such as epoxy.
What can be made of graphite?
Graphite is pure carbon. A diamond is also pure carbon in a very specific crystal. Yet diamonds do not conduct electricity and graphite does. Graphite can form in plate like arrays of hexagonal crystals and in an amorphous, powdery form.
What are diamond and graphite made from?
They are made from Carbon (C).
What are starter motor brushes made of?
Carbon
