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An electric motor could run a generator to power itself, but this is a lossy system, so an outside power source would have to supply the power due to the losses. And if the motor was being used for anything else, the real power losted due to this other use would have to be made up as well. You don't get anything for free.
No. This is perpetual motion, which is impossible, the problem is that everything has losses, like friction, drag, etc., and no matter how clever you get, the best you can do is that you can ALMOST make it work. Don't waste time pursuing this beyond understanding why it does not work.
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Can you use electric motor on generator insted of petrol motor?
of course you can.but the purpose of electricity is lost here.generators run by petrol or diesel engines are used because you dont have a electric supply or there is a power outage.if there is no power how can you run the electric motor which runs the generator.hence the generator is always coupled with and diesel IC engine.
Is a power supply needed to run an electric motor?
Yes. To make something move, you have to add energy. An electric motor won't turn by itself.
What is the problem with using an electric motor to run a generator stepped up with transformers that is used to run the motor and give electricity for other uses?
It's all to do with the conservation of energy. The output power of the transformer cannot be greater than the input power from the motor used to drive your generator! In fact, it will be significantly lower than the power of your first motor due to the efficiency of the motor, of the generator being driven by that motor, and of the transformer. So if you then try to run the original motor from the output of your transformer, the energy-losses will simply accumulate, and the motor will not be able to run!
What is the application of generator and motors?
A generator converts mechanical power into electrical power. A motor converts electrical power into mechanical power.
What is a DC generator the same as?
A DC generator, or "dynamo", is very similar to a DC electric motor but cannot be described as "exactly the same as a motor" because a DC generator's designed purpose is not to "use" electricity (which a DC motor does) but to "make", or "produce", electricity.
