Dynamo

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Dynamo

  1. 1. DYNAMO BY-Vinesh
  2. 2. ELECTOMAGNET • An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment, as well as being employed as industrial lifting electromagnets for picking up and moving heavy iron objects like scrap iron.
  3. 3. DYNAMO • A dynamo is an electrical generator that produces direct current with the use of a commutator. • The word dynamo (from the Greek word dynamis; meaning power) was originally another name for an electrical generator, and still has some regional usage as a replacement for the word generator. A small electrical generator built into the hub of a bicycle wheel to power lights is called a hub dynamo, although these are invariably AC devices
  4. 4. WINDMILL • A windmill is a machine that converts the energy of wind into rotational energy by means of vanes called sails. Originally, windmills were developed for milling grain for food production. In the course of history, the windmill machinery was adapted to many other industrial uses. An important nonmilling use is to pump water, either for land drainage or to extract groundwater.
  5. 5. HYDROELECTRIC DAM • Most hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator. • The turbine used here is attached to a dynamo. • The power extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. • This height difference is called the head. The amount of potential energy in water is proportional to the head. A large pipe (the "penstock") delivers water to the turbine.
  6. 6. HUB DYNAMO • A hub dynamo is a small electrical generator built into the hub of a bicycle wheel that is usually used to power lights. Most modern hub dynamos are regulated to 3watts at 6 volts, although some will drive up to 6 watts at 12 volts.
  7. 7. Nuclear power plant • A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. • Nuclear reactors are used at nuclear power plants for generating electricityand in propulsion of ships. Heat from nuclear fission is passed to a working fluid (water or gas), which runs through turbines. • These either drive a ship's propellers or turn electrical generators. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of plutonium for weapons. • Some are run only for research.
  8. 8. THANK YOU

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