The number of blades, their shape and the height of the windmill from the ground are decided on the basis of wind velocity and other environmental factors. The blades of a windmill are designed to create a pressure between its different regions when wind strikes them. This difference in pressure makes the blades to rotate.
These blades are connected to a long rod having a U shaped bend at the other end. The U shaped bend of the crank is connected to the rod of water pump. During the moving wind, as the wheels are rotated, the crank rod moves up and down and simultaneously the rod of water pump also moves up and down. The up and down motion of the pump rod would lift the water from ground.
What are the main constituents of biogas? Describe with a labelled diagram how it is prepared in a fixed dome type plant. What is the advantage of this plant?
Explain the classification of different sources of energy?
What are thermal power plants? How will you demonstrate that thermal energy is converted into electrical energy?
