To generate electricity.
A TV set is usually plugged into the wall outlet, so it gets the electricity the same way that any electrical device in your home does. The source of the the electrical energy can be coal plants, nuclear power plants, wind farms, solar energy, etc.; but it is usually some mix of these and other sources.
Nuclear energy is released by every fissioning nucleus, about 200 Mev per fission. But as the fission fragments are slowed down and absorbed in the mass of the fuel rods, the nuclear energy is changed to thermal energy (heat) which can then be transferred to the reactor coolant and used for steam raising
The nuclear reactor produces heat which is used to raise steam to feed a steam turbine/generator set
India is developing and needs more electricity to do so. The justification for nuclear is surely to try to comply with the latest trends and hopefully agreements to reduce carbon emissions. India and China have been identified as major contributors to CO2 emissions, which are being discussed at Copenhagen as I write. If India builds more nuclear plants this will reduce the burning of coal and help to achieve the world wide targets to be set at Copenhagen (hopefully).
A new type of natural-gas electric power plant proposed by MIT researchers could provide electricity with zero carbon dioxide emissions to the atmosphere, at costs comparable to or less than conventional natural-gas plants, and even to coal-burning plants. But that can only come about if and when a price is set on the emission of carbon dioxide and other greenhouse gases - a step the U.S. Congress and other governments are considering as a way to halt climate change.
Despite some controversy over the environmental effects of electricity production, several statements are generally agreed: * All means of generating electricity have some effect on the environment: some are very damaging but none is completely benign. * Nuclear generated electricity releases small amounts of radio-active materials into the air and waterways, but well within regulatory limits set to protect both people and the environment. Most special cases that may not be protected by the general regulations, e.g., endangered species, are considered at the siting stage. * Nuclear generated electricity avoids the emissions of acid rain, particulates, heavy metals and carcinogenic chemicals that result from the burning of fossil fuels and wood. * Nuclear generated electricity, along with hydro- and wind-generated electricity, contributes less of the greenhouse gases that may contribute to global warming than fossil-fuelled electricity. * Nuclear generated electricity uses much less land than all other options. These generalizations would have to be reviewed for any specific proposal, e.g., the land use for a natural-gas-fired plant near a gas-well would be significantly lower than for one requiring a long pipeline.
The two "basic types" of nuclear energy are based on fission and fusion. Fission is atom splitting. Fusion is the forcing together of nuclei and causing them to fuse, to stick together, and to form a new nucleus. In both reactions, a lot of heat is generated. The reactions can be set up to occur "really fast" and release energy all at once. This the idea behind the nuclear weapons.
Nuclear energy makes up 80% of France's energy intake. The USA has over 100 power plants and many countries are building more nuclear power plants (like India and China.) Poland is starting on Nuclear energy in 2020.
Despite some controversy over the environmental effects of electricity production, several statements are generally agreed: * All means of generating electricity have some effect on the environment: some are very damaging but none is completely benign. * Nuclear generated electricity releases small amounts of radio-active materials into the air and waterways, but well within regulatory limits set to protect both people and the environment. Most special cases that may not be protected by the general regulations, e.g., endangered species, are considered at the siting stage. * Nuclear generated electricity avoids the emissions of acid rain, particulates, heavy metals and carcinogenic chemicals that result from the burning of fossil fuels and wood. * Nuclear generated electricity, along with hydro- and wind-generated electricity, contributes less of the greenhouse gases that may contribute to global warming than fossil-fuelled electricity. * Nuclear generated electricity uses much less land than all other options. These generalizations would have to be reviewed for any specific proposal, e.g., the land use for a natural-gas-fired plant near a gas-well would be significantly lower than for one requiring a long pipeline.
In most power plants the steam engines are mounted on platforms connected directly to the machinery they drive. Typically, power generating stations will have a turbine/generator set in a centralized location as close to the switchyard as possible. Other power plants, non generating, the engines may be located outside the boiler room or even in separate buildings.
It can be any size, depending on what it is being used for. They can be huge and set up to create electricity in power plants fired by coal, gas or nuclear power. They can be relatively compact for small ships and the uses in between include steam ships, locomotives and smaller generators.
In all countries using nuclear power for peaceful purposes there exists a licensing organisation set up by Government to assess the safety of the plants and to issue licences to operate, and it would be illegal to try to do anything for which a licence has not been issued. Therefore building and operating a nuclear plant can only be done by an organisation that is capable of satisfying the licensing authority that they can do the job safely. It seems impossible to visualise nuclear power being used more widely, it will always be the province of the large electricity companies, who have the staff and organisation to do the job in a satisfactory way.