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The purpose is to counteract the feld distorsion that is caused by the armature current. If this is left as is , the commutation properties of the gnerator will be disturbed, the commutation will not take place in the neutral zone and brush sparking occurs.
With correctly sized commutating poles the commutation at the brushes will be in the neutral zone regarless of armature current, no sparking occurs, and a anual adjustment of the brushgear position at different loads is not needed
What else can I help you with?
A particular power source creates electricity through the use of giant magnets that are rotated to create a flow of electrons. This electricity is then directed?
An electric generator -apex 😁
What is a temporary source of electric current?
A battery is a common temporary source of electric current. When connected to a circuit, a battery transforms stored chemical energy into electrical energy to power devices or equipment. Once the stored energy is depleted, the battery needs to be recharged or replaced to continue providing electric current.
What is the function of carbon brushes in dc machine?
The carbon (graphite) brushes in a generator are used to connect external circuits in the generator to the rotor through the commutator. But you want to know what that means, right? Darn it, we always see these "trick" questions here. Okay, this is the scoop. The rotor in a generator is (usually) a group of windings. These are coils of wire. But they need to be connected to the "outside" or non-moving parts. Each coil has two ends, and these ends are connected to copper segments (sometimes called "lands") on the commutator. The segments are all in a ring around the end of the rotor, and the brush or brush sets ride on them. The other end of the brush(s) is(are) connected to wires to electrically connect them to appropriate places in the non-moving parts of the generator. The brush is conductive (naturally), and it is soft enough to provide a good "wear point" against the copper segments. The brushes do most of the "wearing away" in this application, and it is a fairly easy and straight forward evolution to replace them. In the motors of power tools, some of the units have a way to access the brush holder without taking the housing apart. Particularly the older ones. Anyway, it is said that a picture is worth a thousand words. Use the link below and take a look at the pictures. It's all there.
What is a machine that uses an energy source to produce electricity?
A generator generates electricity. A simple generator consists of a magnetic field, relative motion between the conductor and magnetic field, and a conductor to carry electrical current to the load. Turbines drive the generators to create the necessary relative motion utilizing steam or water as the prime mover.
How do you get electricfier?
To "electrify" something means to provide it with an electric current or power source. This can be done by plugging it into an outlet, inserting batteries, or connecting it to a power source such as a generator or solar panel.
What is the purpose of a commutator in a electric motor?
A commutator applies power to the best location on the rotor, and in a generator, picks off power similarly.
What is the definition of commutator?
A commutator is an electrical switch that periodically reverses the current direction in an electric motor or electrical generator. A commutator is a common feature of direct current rotating machines.
Explain the necessity and principles of commutator in Dc generator?
what is necessity of commutator in DC generator
What is the purpose of a in an electric motor?
A commutator applies power to the best location on the rotor, and in a generator, picks off power similarly.
What happens if commutator of DC generator is removed?
If the commutator is removed from your generator, you (if you connect slip rings) get AC supply instead of DC supply. the function of the commutator is to convert AC to DC supply and vice versa.Additional AnswerRemoving the commutator will also prevent you from connecting the output of the generator to its load. Remember, the generator's armature is spinning!
How can convret dc generator to an alternertor?
By connecting a commutator to the rotor of the generator.
Inventor of the dynamo?
The first dynamo or electric generator was invented by Michael Faraday in 1831. Although it functioned as one, it was not a pure dynamo because it lacked a commutator.
What are the springy pieces of metal or carbon that make contact with a commutator's contacts?
Those are called brushes. They are used to conduct electric current between stationary wires and rotating parts in an electric motor or generator. The brushes are typically made of carbon or metal alloys to ensure good electrical contact and minimize wear on the commutator.
How commutator converts AC to DC?
There is no conversion of AC to DC a commutator is the key to creating straight DC voltage. "The commutator rotates with the loop of wire just as the slip rings do with the rotor of an AC generator. Each half of the commutator ring is called a commutator segment and is insulated from the other half. Each end of the rotating loop of wire is connected to a commutator segment. Two carbon brushes connected to the outside circuit rest against the rotating commutator. One brush conducts the current out of the generator, and the other brush feeds it in. The commutator is designed so that, no matter how the current in the loop alternates, the commutator segment containing the outward-going current is always against the "out" brush at the proper time. The armature in a large DC generator has many coils of wire and commutator segments. Because of the commutator, engineers have found it necessary to have the armature serve as the rotor(the rotating part of an apparatus) and the field structure as the stator (a stationary portion enclosing rotating parts). Which is the inverse of an AC Generator."
Does a generator produce ac or DC voltage?
NO, generator always generating AC current,when commutator is used,at that time AC is converted in DC.and due to this generator is called dc generator.
What are the parts of a direct current generator?
there are many parts of a dc generator armature, field coil, yoke, body, rotor and commutator.
How can you generate a DC?
U sohuld replace the slip-ring which it is in the AC generator to a commutator. It is a split-ring. Then u can produce DC generator.
