Explain the principle of working on a windmill.

Hint: The blades of the windmill can be rotated with the help of strong winds, which in turn can convert energy. There are devices which can convert mechanical energy into current electricity.

Complete step by step answer:
To begin with the principle of working of a windmill, first we need to know what this device is called a windmill. A windmill is a device that uses vanes called sails or blades to transform wind power into rotational energy, primarily to mill grain (gristmills), but the concept is often applied to windpumps, wind turbines and other applications. A wind turbine is a specially developed windmill-like device to produce electricity. They can be seen as the next step in the windmill’s development.
The words "wind energy" and "wind power" both describe the mechanism by which the wind is used to produce electricity or mechanical power.
On a simple idea, wind turbines run. The energy in the wind spins a rotor across two to three propeller-like blades. The rotor is attached to the main shaft, which generates electricity by rotating a generator. Kinetic energy in the atmosphere is turned into mechanical electricity by wind turbines. For basic activities (such as grinding grain or pumping water), this mechanical power can be used or a generator can turn this mechanical power into electricity.
To absorb the most electricity, wind turbines are installed on a pole. They will take advantage of quicker and less turbulent wind at \[100\] feet ( \[30\] metres) or more above ground. Wind turbines can be used to generate energy for a single home or house, or for more distributed delivery of electricity, they can be connected to an electricity grid.

Note: It is important to note that windmills provide extra edge over other forms of energy as they require renewable resources to provide energy i.e. air or wind. However, if in any region where the strength of air or wind is low, then windmills cannot operate at optimum level. This is the drawback of windmills.