Question

what is a windmill state the energy conversion taking place in the working of a windmill

Answer 1

Windmill is a large rotational device which contains a rod having blades in front of it.

Windmill is a device which converts the wind energy into electrical energy.

It is mostly used in the rural areas are the areas having excessive amount of wind..

Answer 2

Windmill is a large machine that converts Wind Energy into Electric Energy.

It has huge wing span that can rotate when wind flows through it.. It wings are too huge that they can drive a Large Electric Generator attached behind these wings.

Almost all Large Scale Electricity is produced by converting some kind of mechanical energy into Electric energy in generator.

Powerplants like Thermal, Nuclear,etc.,, Uses non-renewable resources such as coal, Uranium, etc., these techniques are unsustainable and hazardous to our environment.
Whereas power generation through renewable energy sources like Wind, water flow, solar, etc are highly sustainable techniques due to endless availability of such energy sources and they are less harmful to the ecosystem.