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You can see the output present from each type of generator in the chart on the right. Air Conditioner Alternators Picture: An alternator is a generator that produces air conditioner (rotating present) instead of DC (direct existing). Here we can see a mechanic removing the alternator from an outboard motor boat engine.

What if you wish to produce rotating present (AC) rather of direct current? Then you require a generator, which is just an air conditioner generator. The most basic type of generator resembles a DC generator without a commutator. As the coil or magnets spin past one another, the present naturally increases, falls, and reverses, giving an air conditioning output.

Generators are mainly used for generating electrical energy from vehicle engines. Cars and trucks utilize alternators, driven by their fuel engines, which charge up their batteries as they drive along (the air conditioner current is transformed to DC by diodes or rectifier circuits). Generators in the real life Photo: The generator on a wind turbine sits just behind the rotor blades.
Photo by Joe Smith thanks to NREL (National Renewable Energy Laboratory). Generating Found Here simpleand it is. The hard thing is that you need to put in a huge amount of physical effort to create even little amounts of power. You'll know this if you have a bike with eager beaver lights powered from the wheels: you have to pedal rather harder to make the lights glowand that's just to produce the tiny amount of electrical energy you require to power a couple of torch bulbs.
At the opposite extreme, in real power plants, massive electricity generators are powered by steam turbines. These are a bit like spinning props or windmills driven utilizing steam. The steam is made by boiling water using energy launched from burning coal, oil, or some other fuel. (Note how the preservation of energy applies here too.

The energy that powers the turbine originates from the fuel. And the fuelif it's coal or oiloriginally came from plants powered by the Sun's energy. The point is easy: energy constantly needs to come from someplace.) How much power does a generator make? Generators are rated in watts (a measurement of power that indicates how much energy is made each 2nd).