• It takes diesel fuel, boils it, funnels the stream through a series of tubes (!), which cause pistons to push up and down, generating electricity.
  • Its not the pistone but the momentum they create that generates electricity. see the generator motor is attached to a circuit that minipulates the energy the pistons create
  • It depends on the type of generator. But, for the sake of brevity, let us consider a diesel generator. The typical diesel generator is simply a diesel engine -- sometimes a common engine such as a tractor motor -- that drives a device very similar to a car alternator. An alternator works by creating a magnetic field that rotates such that the field passes through a set of coils. As the field passes through the coils, an electric current is induced on the coils. This electric current is then regulated to become the electricity made available on the generator's output. For very small generators, the magnetic field may be produced by permanent magnets. For larger generators, the field is generated by a set of coils. A generator does not necessarily have to be driven by a diesel engine. A hydroelectric plant has the same alternator style generators (really big ones) that are rotated by water flowing past.
  • A generator is a backwards electric motor. You put work into a generator--turning it with steam, water, wind, or a car engine, and each time it spins it sends an exact amount of electricity through its connecting wires to an electric motor on the other end. There the process is reversed, and the electricity makes work come out of the motor. It's just a way to move work from one place to another conveniently (except what you lose by friction). It would be possible to change some wires and put work into the motor and have work come out of the generator. The reason motors and generators work is that there is a cause-and-effect relationship between electrical fields and magnets. Moving one will cause the other to move.
  • As stated above, a simple generator without a commutator will produce an electric current that alternates in direction as the armature revolves. Such alternating current is advantageous for electric power transmission, and hence most large electric generators are of the AC type. In its simplest form, an AC generator differs from a DC generator in only two particulars: the ends of its armature winding are brought out to solid unsegmented slip rings on the generator shaft instead of to commutators, and the field coils are energized by an external DC source rather than by the generator itself. Low-speed AC generators are built with as many as 100 poles, both to improve their efficiency and to attain more easily the frequency desired. Alternators driven by high-speed turbines, however, are often two-pole machines. The frequency of the current delivered by an AC generator is equal to half the product of the number of poles and the number of revolutions per second of the armature. It is often desirable to generate as high a voltage as possible, and rotating armatures are not practical in such applications because of the possibility of sparking between brushes and slip rings and the danger of mechanical failures that might cause short circuits. Alternators are therefore constructed with a stationary armature within which revolves a rotor composed of a number of field magnets. The principle of operation is exactly the same as that of the AC generator described, except that the magnetic field (rather than the conductors of the armature) is in motion. The current generated by the alternators described above rises to a peak, sinks to zero, drops to a negative peak, and rises again to zero a number of times each second, depending on the frequency for which the machine is designed. Such current is known as single-phase alternating current. If, however, the armature is composed of two windings, mounted at right angles to each other, and provided with separate external connections, two current waves will be produced, each of which will be at its maximum when the other is at zero. Such current is called two-phase alternating current. If three armature windings are set at 120° to each other, current will be produced in the form of a triple wave, known as three-phase alternating current. A larger number of phases may be obtained by increasing the number of windings in the armature, but in modern electrical-engineering practice three-phase alternating current is most commonly used, and the three-phase alternator is the dynamoelectric machine typically employed for the generation of electric power. Voltages as high as 13,200 are common in alternators.
  • The basic principle of a generator is: An electric current is generated when a conductor passes through a magnetic field.
  • nagargun or what ever is the only one who has even attempted to answer this properly... a generator creates dc... it is no longer correct to identify an ac generator as such but an alternator... the question is how does a generator work... so forget ac..
  • The prime mover of the Generator set will be a diesel engine, which is coupled to the shaft of an alternator (single phase for small units). The rotating shaft of the diesel engine rotates the armature of an alternator, and due to electromagnetic induction the output of an alternator is electricity.
  • Roger Kovaciny that was a very nice awnser, thank you for that comment, our teacher is happy (;
  • Whenever a conductor cuts magnetic flux,an emf is inuced & current is flowing through the closed circuit according to Faraday's law of electromagnetic induction.The direction of induced emf is given by Fleming's Right Hand Rule.Stretch Forefinger,middle finger & thumb in mutually perpenticular to each other. then, Forefinger represents magnetic field,Middle emf induced & thumb motion of conductor. Components of generator are 1) magnetic field 2) group of conductors 3) Motion of conductors with respect to magnetic field.

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