how are windmills built to rotate at a steady rpm
Wind turbines with electric generators
Wind Turbines are very convenient and they are very recommended. Wind turbines can dramatically decrease your use of electricity and thus decrease your electric bill.
As of 11 January 2009, there are 269 operational wind farms in the UK, with 2,764 turbines and 4,070 MW of installed capacity
Power stations, hydro electric schemes, aircraft engines, wind turbines.
Around 20% of electrical energy produced in Denmark is from wind energy.
I doubt that a uniform count of windmills is available. Also, do you include wind pumps and wind turbines?
As of the beginning of year 2014 and statistics collected then, show that there are about 5276 Wind Turbines in United Kingdom. The installed capacity of these wind turbines is over 10 gigawatts.
It would certainly be possible to produce enough electricity by means of wind turbines, to supply the electric needs of a school.
Wind turbines use the kinetic energy of wind to generate electricity, while wave turbines harness the energy from ocean waves to produce power. Wind turbines are typically installed on land or offshore in areas with strong winds, while wave turbines are situated in the ocean to capture the motion of waves. Both technologies are considered renewable sources of energy, but wave turbines are less common and still in the early stages of development compared to wind turbines.
Wind Energy creates NO greenhouse gasses or Carbon Dioxide. Once installed Wind Turbines create FREE energy.
Wind can be made to drive windmills which can cause turbines to rotate. The turbines have electromagnets which move through coils. By electromagnetic induction this generates an electric current.
Wind turbines create energy in a similar way as a hydro-electric dam. Wind turns the fan blades, which drive a motor that converts the kinetic energy into electric energy.