what makes motors and generators different?
117649
DC series wound motors and generators are the same thing. One you apply mechanical power to and you will get a rippled DC wave form out. The more commutator bars (or magnets) there are the less ripple you get.\nAlternators (generators) are like you find on a car and in the generator sets that power the world. They have rings that go all the way ring the armature instead of the slits in commutators. This means that as the armature spins through the fields of the magnetic an alternating current is induced through the winding and out through the two rings. This is better for the transmission of power over distances rather than DC. So two rings are single phase, three rings are three phase. \nThe difference in a car is that after the AC is produced a set of diodes rectify the current and then a regulator levels it to 13.8volts DC cause batteries dont like AC.
98629
it depends on what it powers and the efficency of the motor.
948920
All rotating electrical machines can be classed as either "motor" or "generator". The definition is based on the direction of electrical power flow. A motor requires electrical power to provide rotation (and hence useful torque); a generator is driven by an outside torque source to produce electrical power.\n\nFor a machine to work, there has to be a magnetic field created to transfer the mechanical power to/from the stationary portion to the rotating portion.\n\nFor the case of an induction generator, an outside force rotates the shaft of the electrical machine. (You can assume here that the rotor has been magnetized through the use of an external capacitance circuit to provide discrete magnetic poles.) The rotation of the magnetic field, through mechanical means, induces a current to flow in the stator winding. Since the winding is a resistive path, there will also be a potential developed.\n\nThe output (volts and amps) will both be sine waves, operating at a frequency dependent on the rotational speed of the rotor and the number of poles.
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An electric generator is a device used to convert mechanical energy into electrical energy.\n\nThe 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.\n\nThe 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).
990503
The Basics\nWhen most people think about motors or engines, they think about rotation. For example, a reciprocating gasoline engine in a car produces rotational energy to drive the wheels. An electric motor produces rotational energy to drive a fan or spin a disk. A steam engine is used to do the same thing, as is a steam turbine and most gas turbines.\n\nRocket engines are fundamentally different. Rocket engines are reaction engines. The basic principle driving a rocket engine is the famous Newtonian principle that "to every action there is an equal and opposite reaction." A rocket engine is throwing mass in one direction and benefiting from the reaction that occurs in the other direction as a result.\n\nA rocket engine is generally throwing mass in the form of a high-pressure gas. The engine throws the mass of gas out in one direction in order to get a reaction in the opposite direction. The mass comes from the weight of the fuel that the rocket engine burns. The burning process accelerates the mass of fuel so that it comes out of the rocket nozzle at high speed. The fact that the fuel turns from a solid or liquid into a gas when it burns does not change its mass. If you burn a pound of rocket fuel, a pound of exhaust comes out the nozzle in the form of a high-temperature, high-velocity gas. The form changes, but the mass does not. The burning process accelerates the mass.\n\nAnd that is how the rocket moves foward
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Here are a couple of web sites that approach this in different ways. \n\nhttp://www.circletrack.com/techarticles/84199/\n\nhttp://www.diracdelta.co.uk/science/source/e/n/engine%20excitation%20mechanisms/source.html\n\nHope these help.
478746
In the sense of a motor the terminology is from the the early days when wire fibers were used then later found that a brush made of carbon can deliver the power without wearing out the commutator. The carbon brush being of softer material would easily be replaced when worn down.\n\ncheck out the following link:
1171298
Alternators generate electricity by the same principle as DC generators, namely, when the magnetic field around a conductor changes, a current is induced in the conductor. In a typical modern alternator, a rotating magnet called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator. The field cuts across the conductors, generating an electrical current, as the mechanical input causes the rotor to turn.\n\nThe rotor magnetic field may be produced by induction (in a "brushless" generator), by permanent magnets (usually in very small machines), or by a rotor winding energized with direct current through slip rings and brushes. Automotive alternators invariably use brushes and slip rings, which allows control of the alternator generated voltage by varying the current in the rotor field winding. Permanent magnet machines avoid the loss due to magnetizing current in the rotor, but are restricted in size, owing to the cost of the magnet material. Since the permanent magnet field is constant, the terminal voltage varies directly with the speed of the generator. Brushless AC generators are usually larger machines than those used in automotive applications.
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1. Energy cannot be created or destroyed only changed in form. 2. The total energy of any closed system is = 0\n\nA static generator does not create energy it only changes its form from mechanical to electrical.  Search on the web for perpetual motion for a more in depth explanation.\nalso search thermodynamics, first and second laws.
9381
a hyrdo electric generator works by using water current flowing againsnt a wheel that in fact turns the generator wheel creating electricity, just like when you put your hand against a current it opushes against your hand, except its being diredcted twards a wheel that catches that current turning it into energy
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The thermostat is a heat sensor. The commutator is part of the rotor. The brush spring keeps constant pressure on the brush against the rotor, \nThat leaves.... the relay.\nIn small motors a centrifugal switch is used. It's mounted on the rotor shaft. When it reaches speed, the outward force opens the switch and disconnects the start windings.\nIn larger motors like 100 horse power and up, a "part winding start" can be used. Only a small part of the windings are used to start the motors. The starter box has a timer that triggers a relay that engages the rest of the windings when the speed is up.
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Not just any A/C motor will.\n\nCurrent is generated by ,,"Waving a MAGNET past a COIL"\n\nUsing a NON-Magnet produces nothing.\n\nMost A/C motors do not have permanent magnets.\n\nA/C Motor's "magnetism" is typically created by the Supply Current---Electromagnetism\n\nA/C motors can be converted to generate,,but it's not so simple as just spinning the shaft of a DC motor or any permanent magnet motor.\n\nThere's stuff all over the net which explains what type A/C motor is easiest/best to convert,,and what's required.\n\nhttp://users.aber.ac.uk/iri/WIND/TECH/MISC/MotorsAsGenerators.html\n\nhttp://www.otherpower.com/otherpower_wind_alternators.html
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Generator is defined as (one of the following):\n- an apparatus that produces a vapor or gas \n- engine that converts mechanical energy into electrical energy by electromagnetic induction \n- someone who originates or causes or initiates something\n- an electronic device for producing a signal voltage \n\nTherefore the different types of generator are:\npeople, electronics, vapor producers (like combustion engines), and (electromechanical) devices used to transform mechanical energy into electrical energy.
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Is this for an electric motor or an engine? \n\nNEMA National Electrical Manufaturers Association) has a standard set of starters for electric motors. Try a web search, I bet you will find what you want if you are talking about an electric motor.
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When a magnet is passed through the centre of a coil of wire an electric current is produced in the wire. The energy comes from the movement of the magnet. Kinetic energy is converted into electrical energy and this is how electricity is generated in a generator. The reverse can also happen. Passing electricity through the electric coil in your cars starter motor will cause the magnet inside to move. Hence electrical energy is converted to kinetic energy and this energy turns the crankshaft of your car to get it started.
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Running an electric motor "backwards" generates electricity.
486905
thats basically the idea of a hybrid engine, except instead of powering a house, it helps power the car. see, electric motors actually work as electric generators in reverse, so hybrid cars have a gas and electric motor. the electric motor generates power when braking, which is stored in batteries. then, when you start up again, the electric motor helps accelerate so the gas engine doesnt work so hard. its alot easier and more efficient to use the stored enrgy within the car rather than putting it into the power grid.