principle of a generator?

Answer 1

An electric generator is a device used to convert mechanical energy into electrical energy.

The generator is based on the principle of "electromagnetic induction" discovered in 1831 by Michael Faraday, a British scientist. Faraday discovered that if an electric conductor, like a copper wire, is moved through a magnetic field, electric current will flow (be induced) in the conductor. So the mechanical energy of the moving wire is converted into the electric energy of the current that flows in the wire.The mechanical energy needed to turn the generator comes from the brown hand crank at the front of the generator. In a hydroelectric power plant, the mechanical energy to turn the generator comes from the water turbine, which is turned by the force of falling water. The hand crank causes the red wire to spin inside a magnetic field (the blue lines). As Faraday learned, moving the wire through the magnetic field causes electric current to flow in the wire. The turning red wire is connected to a volt meter, which shows the amount of electric current that is produced. In a hydroelectric plant, the generator is connected to transmission lines that deliver the electricity to your home or business.

The controls allow you to control the speed and direction of the generator and turn portions on and off for greater clarity. You can also use the radio buttons to show a direct current, or DC generator (with commutator) or an alternating current, or AC generator (without commutator).

Answer 2

Principle of a Generator and Alternator
By
minootoo


When a magnetic field is disturbed by a wire a current is produced in the wire.

So if you have a coil of wire and a horse shoes magnate, both arranged on a frame so that coil can rotate, in side the prong of the magnate, it will have current generated inside the coil.

All that needs to be done is get this current to an appliance, say a light bulb or a galvanometer or a heating coil……

This is done by a mechanical arrangement.

The magnate is attached to a frame it also has a hole through which a shaft passes without touching the magnate or rubbing. This shaft carrying two composite disc made of copper and, non conductive material, coil and two bearing, one at each end of the shaft. This assembly is made to rotate in side the magnate. Two ends, from the coil are attached to two discs on the side of the disc. One of the discs has the hole to thread coil wire, without touching the first disc. A hand crank is mounted on the shaft outside the frame. Frame will carry two additional wires that can rest on the edge of the disc (technically they are call brush because they brush the disc as it turns) so the current can be conducted, current is produced in the coil when the shaft is turned using the crank.

These two wires can now be taken to the appliance, say a suitable light bulb. On turning the crank the bulb will light up.

This arrangement will produce a DC or direct current. The contraption other then bulb and extra long wire is called the generator.

Alternator

An alternator is just a generator but coil does not rotate, the magnate is rotated. Shaft will be heavy short and it will have one good strong bearing. It will not need disc or the brushes. It will produce an AC or alternating current.

Answer 3

Generator is a electrical device which is uesed to generate the electrical energy.

if any conductor cuts magnectic flux produce by magnets, emf (voltage) will induce in the conductor and as conductor is closed path then electric current will flow thro it.

Answer 4

When you move charged particals through a magnetic field a force is applied to them.

The electrons in a conductor are charged negitively and are free to move within the conductor. When you move a conducting loop throught a magnetic field you cause the electrons in it to move in the direction of the force..

Moving electrons in a conductor is what we generally call electricity.

Answer 5

a generator works on principle of electromagnetic induction
you can say induced current(current produced by electromagnetic induction)

A coil is there which revolves around magnet and current is produced due to this(principle of electromagnetic induction)

the current produced is AC(alternating current)

Answer 6

right hand rule