Generadores

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  • Publicado : 19 de febrero de 2012
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Generators.
1. - Which generators properties and alternating current?
A machine that converts mechanical power into alternating current electric power.
Alternating current generators are usedinstead of direct current (DC) generators because AC power easily be stepped up in voltage, by using transformers, for more efficient transmission of power over long distances.
2. –how a voltage isinductive in a conductive moving magnetic field?
Whenever electrons flow through a conductor, a magnetic field will develop around that conductor, this effect is called electromagnetism.
3. –How thealternator and dynamo produce a usual outputs electric power?
The generators are like an electric motor in reverse. Instead of applying electricity to make it spin; when you spin it, it makeselectricity.
It does this by spinning a series of windings of fine wire (called the armature) inside of a fixed magnetic field by connecting them to a belt and pulley; it gets a current and voltage generatedin those windings of wire.
4. –which methods employed to control the voltage and current output of the alternator?
The regulator does just what is name implies it regulates the outputs of thegenerator or alternator to the proper voltage and current by controlling the field current that is supplied. The regulator is usually a mechanical device which works by opening and closing the contacts ofseveral relays to create the correct “average” voltage and limit the current supplied to the correct amount. It voltage is controlled by the number of windings in the armature.
5. –How the alternatormaybe change to produce a DC output?
The process of rectifying the AC current into DC current is handled inside the alternator by something more complex than commutator diodes. A diode is a “solidstate” device that allows current to flow in one direction only “solid state” means it does this without any mechanical moving parts.

Definitions.
AC Generator: Machine for converting mechanical...
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