can an electrically driven generator be built that could produce enough electricity to drive itself?

Answer 1

According to the 'laws' of thermodynamics, this is not possible.
Due to friction loss and inefficiencies in the driving engine, 100% efficiency (unity) cannot be obtained. You have requested an over-unity device (more than 100% efficient), which is not feasible at this time.
Remember, 'laws' of physics said that heavier than air devices can not fly.
Nothing can travel faster than light.

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Answer 2

Its not clear for what purpose of your intended use. A car runs down the road from an engine and transmission and rear end<>, the max speed depends on the gear ratio, for example a 4.11, etc or a breakdown for example 0f 4 to 1.
Would it not be possible to have a 2 phase setup of one driving the other of one with a lower gear reduction driving the other with a higher gear, if nothing else would or should equal the usage out. At one time I was wondering the same, but using a 12 volt battery operated motor to turn an alternator, keeping the battery at full charge as well as a power generator, but would have to be done in a series of gears to make it run fast enough to make it work fast enough rpm to electric-ta-fi a house , then again depends on what its used for and the size of the generator.

Answer 3

No.
The idea sounds very feasible and it's sure intriguing - but, unfortunately, even if the generator were 100% efficient - friction, heat and internal electrical resistances would eventually bring it to a stop.
And even if a 100% efficient generator with the advent of super conductors and frictionless bearings operating in a vacuum could be set up - it still wouldn't produce more power than it would consume.

Answer 4

Not possible.
If its done it would defeat conservation of energy law.
In ideal condition the amount of power produced by a generator should be exactly equal to the amount of energy it would produce if rotated with same torque. However in reality there is an evil called Friction Loss exists, which makes it impossible to produce enough electricity to drive itself.

Answer 5

No no no. This is a perpetual motion machine. This machine is often invented by newcomers to physics. The losses involved means that less power is generated than is actually used to drive the motor. Therefore the motor will very quickly stop.

Answer 6

Yes, if you use a gyroscope, as your generator, and figure out how to make solid metallic hydrogen, so you can forge it into such a form. Since solid metallic hydrogen would be a room temperature superconductor. This would counter the forces that would normally work against such a device being workable in the manner you're suggesting.

Answer 7

I nonetheless dont consider maximum of your comments adult men. i think of if the understanding of pulleys, gears, and machines often could nicely be exact exploited, autos that are run by potential of electrical energy could nicely be used to supply extra electrical energy. i think of the clarification why that's no longer executed isn't in keeping with technology even with the undeniable fact that it is in keeping with economics and politics.

Answer 8

Some guy in Ireland said he invented a self sustaining electomagnetic generator, but it could be a hoax.

Answer 9

these are all good answers, but i did not see anyone state the term "entropy" anywhere. the entire universe is slowly turning into it. it is the loss of energy due to the changes of its form (mechanical, heat, electrical, kinetic, etc.)

Answer 10

No. It is not possible. The output of any machine will be less than its input. The efficiency of this can not be more than 100%.