*Which of the following flow chart showing accurate path of generation of electrical energy?*
1️⃣ Energysource > Generator > Turbine > Electrical energy
2️⃣ Energysource > Turbine > Generator > Electrical energy
3️⃣ Electrical energy > Generator > Turbine > Energysource
4️⃣ Turbine > Generator > Energysource Electrical energy
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Answer:
Explanation:An electric generator is a device that converts a form of energy into electricity. There are many different types of electricity generators. Most of world electricity generation is from generators that are based on scientist Michael Faraday’s discovery in 1831 that moving a magnet inside a coil of wire makes (induces) an electric current to flow in the wire. He made the first electricity generator called a Faraday disk, which operates on this relationship between magnetism and electricity and which led to the design of the electromagnetic generators that we use today.
Electromagnetic generators use an electromagnet—a magnet produced by electricity—not a traditional magnet. A basic electromagnetic generator has a series of insulated coils of wire that form a stationary cylinder—called a stator—surrounding an electromagnetic shaft—called a rotor. Turning the rotor makes an electric current flow in each section of the wire coil, which becomes a separate electric conductor. The currents in the individual sections combine to form one large current. This current is the electricity that moves from generators through power lines to consumers. Electromagnetic generators driven by kinetic (mechanical) prime movers account for nearly all of U.S. electricity generation.
Turbine driven generators
Most of U.S. and world electricity generation is from electric power plants that use a turbine to drive electricity generators. In a turbine generator, a moving fluid—water, steam, combustion gases, or air—pushes a series of blades mounted on a rotor shaft. The force of the fluid on the blades spins/rotates the rotor shaft of a generator. The generator, in turn, converts the mechanical (kinetic) energy of the rotor to electrical energy. Different types of turbines include steam turbines, combustion (gas) turbines, hydroelectric turbines, and wind turbines.
Diagram of an electric turbine generator.
Steam turbines are used to generate the majority of the world’s electricity and they accounted for about 48% of U.S. electricity generation in 2019. Most steam turbines have a boiler in which a fuel is burned to produce hot water and steam in a heat exchanger, and the steam powers a turbine that drives a generator. Nuclear power reactors use nuclear fuel rods to produce steam. Solar thermal power plants use solar energy to produce steam. Of the top 10 U.S. electric power plants in 2019, 9 have steam turbines powered by nuclear energy, coal, and natural gas.
Combustion gas turbines, which are similar to jet engines, burn gaseous or liquid fuels to produce hot gases to turn the blades in the turbine.
Steam and combustion turbines can be operated as stand-alone generators in a single-cycle or combined in a sequential combined-cycle. Combined-cycle systems use combustion gases from one turbine to generate more electricity in another turbine. Most combined-cycle systems have separate generators for each turbine. In single-shaft combined cycle systems, both turbines may drive a single generator. Learn more about different types of combined-cycle power plants. In 2019, combined-cycle power plants supplied about 33% of U.S. electricity generation.
Other types of electricity generators include fuel cells, Stirling engines (used in solar thermal parabolic-dish generators), and thermoelectric generators .
Steam turbine Single cycle All sources 47.7%
Coal 23.3%
Nuclear 19.6%
Natural gas 2.6%
Biomass (1.1%); Others (1.1%) 2.2%
Multiple Combined cycle Natural gas2 32.7%
Combustion turbine 20.9%
Steam turbine 10.4%
Dual/single shaft 1.4%
Combustion gas turbine Single cycle Natural gas2 3.3%
Wind turbine All types Wind 7.1%
Hydroelectric turbine Conventional Water 7.0%
Photovoltaic All types Solar 1.7%
Others3 Various 0.6%
Storage systems4 Various 0.1%
1Includes generators at utility-scale power plants (power plants with at least one megawatt electricity generation capacity.
2Natural gas is the main energy source (99%) for combined-cycle power plants.
3Other sources include internal combustion engines, fuel cells, and binary-cycle turbines.
4Storage systems include hydro-pumped storage, electrochemical batteries, flywheels, others. Generation from storage systems is netted out of total annual electricity generation to avoid double counting of energy storage charging sources.
Source: U.S. Energy Information Administration (EIA), Form EIA-923 Power Plant Operations Report, 2019
Answer:
4 is answer.............