0
Most do, but not all. Some have a separate exciter winding.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Why is graphite used to make electrical contacts in motors and generators?
Copper brushes provided poor commutation as they moved from one commutator segment to the next. The cure was the introduction of 'high resistance brushes' made from graphite (sometimes with added copper). This 'high resistance' provided a gradual shift of current from one commutator segment to the next. Partially referenced via Wikipedia
What are the advantages of a brushless generator?
Brush type generators wear out over time of usage and brushes need replaced at a certain intervals too include any damage caused by pitting or scaring. Brushless generators produce a cleaner voltage sine-wave form verses the brush types. brushless type generators use an additional VCR (voltage control regulator) circuit that maintains a tight voltage level with less fluctuation it should be mentioned such a circuit increase the chances of generator failure due to component failure.
The part of the armature that the brushes ride on is called the?
Motor brushes ride one the commutator.
Are DC generators more expensive then AC generators?
DC generators require more time and material to make. Because of this, it will be cheaper to purchase an AC generator. DC generators are typically a better product as well, and you get what you pay for.
Is it diesel generators is DC or AC generators?
Most diesel generators are designed to produce alternating current (AC) electricity. However, there are some diesel generators that can also produce direct current (DC) electricity with the help of rectifiers or inverters.
Electromagnetic generators create current by moving what?
Generators tend to move the coild while alternators tend to move the magnets. Those are the only two choices you have to make power. The disadvantage of moving the wires (or coild) is that you really need brushes that wear.
Difference between static excitation system?
It is called static excitation when you make use of solid state components like diode and thyristors to convert to pure dc and to use this dc for field excitation of synchronous generators. The field winding of synchronous generators can be excited by dc source only. It is called brushless excitation because use of carbon brushes are not made here.It is called dynamic excitation is when you make use of rotating brushes. Excitation is necessary to produce reactive power and also to regulate the voltage of synchronous generators.
What is the function of the brush holder in the alternator?
The brush holder in an alternator keeps the brushes held to slip rings with spring pressure (or commutators in generators or some motors) which provide electrical contact to electromagnets in the spinning rotor. By varying the electrical current through the brushes to the rotor magnets, you can adjust the power output of the alternator as needed.
What kind of generators do they have at Northern Tools?
Northern Tools sell a large variety of generators. They offer generators for your RV, Commercial Standby Generators, PTO Generators, Residental Stanby Generators and Invertor Generators.
Why is graphite used to make electrical contacts in motors and generators?
Copper brushes provided poor commutation as they moved from one commutator segment to the next. The cure was the introduction of 'high resistance brushes' made from graphite (sometimes with added copper). This 'high resistance' provided a gradual shift of current from one commutator segment to the next. Partially referenced via Wikipedia
What are most chimney brushes made of?
There are different varieties of chimney brushes available for different chimney types. The two basic types of chimney brushes are wire brushes and polypropylene brushes.
What is the plural possessive of brush?
It depends on which type of brush you mean. If you men a brush as in a shrubbery, then the word brush is plural and singular. To be lost in the brush implies that you are in an area that is full of bushes or shrubberies. If you mean a brush that you use in your hair, then the plural is brushes.
Which kind of generators are portable?
Propane generators are portable. These can be used in RVs. There are also diesel generators and emergecy generators. All of these generators are portable.
Plural word for brush?
Brushes.
What are Estee Lauder brushes made of?
Back in the year 2000, I used to work for Estee Lauder and heard the make-up brushes were made of goat hair/fur. Not sure what is currently used.
Which are better electronic brushes or manual brushes?
I've never used electronic brushes, but people have been using manual brushes for thousands of years and they have worked fine so I would say manual brushes.
What kind of generes are there?
The two main types of generators are portable and standby. Portable generators include recreational, residential, and industrial generators. Standby generators include welder generators and vehicle mounted generators.
