why cant we rotate the windmill propiler mechanically or electrically to produce more current?

Question

the windmill propiler blades are rotating when the air blows.at the time we are getting the current,why cant we just rotate that propilers with the help mechanical energy?so by doing that we can produce more current?

Answer 1

uhh you could but uhh conservation of energy would make that kinda pointless. ????

Answer 2

Good question! It would seem that we could, and INDEED, we WOULD get more current if we rotated the blades mechanically.

The trouble is, because the system is not perfectly efficient (and, more importantly, because of some laws of thermodynamics) we would USE UP much more energy trying to turn the blades than we would ever get out in current.

Great idea, though! :-) Keep thinking!

Hope that helps!

Answer 3

I am thinking, the propellors are attached to a shaft that turns inside a coil winding. It will take a certain amount of power to turn this shaft, and only so many winding can be housed about this shaft. Any additional we will have to lengthen the shaft, which will require more power to turn. So it seems, for whatever power we use we could only turn so much weight, and could only get so much power from that weight, which is probably less than what we used to turn the shaft. Plus, we are still harming the planet to create the power, so it does not solve the problem of 'Adding" to the problem of Global Warming.