Eddie, the pump is *much* less than 100% efficient as is the turbine and the generator. Some, less than 50% efficient. At each step you lose energy so where does the extra come from? Wishful thinking?
Ok, but wouldn't the gears make up for the loss of efficiency? I could get gears to turn the generators who knows how many more times then the turbine
AND multiple generators??? all with the same pumps, heck even add another turbine ...
Sorry Eddie but efficient as gears are they still lose some of what is used to turn them to friction.
Every thing you add, every extra generator, pump, every physical device loses you a bit more power.
If you want to generate energy then you need to find an energy source, like wind or water flow, and tap that. The more direct and simple you do that, the more power you should get out.
So for example if you want to lift water using wind power it is better to run a pump or bucket chain directly from your windmill than to generate electricity with the windmill and use that to run an electric motor to drive a pump or bucket chain. The generator alone might lose you 40% of the wind power, the electric motor lose 40% of what's left while gears or pulleys from the windmill directly to the pump might lose 10%, less if well done. Even then, either way, the pump takes more power than it puts out.
The closest thing to magic you can get or do is to make something a bit more efficient but no one in all history has made any machine 100% efficient. There is always loss either from friction, partial energy transfer, or both.
I won't bother quoting laws of thermodynamics to you but the above is just a common sense way to say the same. Now it's up to you to see common sense or find it out yourself.