Featured

#16 Episode | Electrical Machine, (Transformer) | Only Live | सफल बैच | SSC JE 2022 के लिए उपयोगी



Published
पढ़ लो चाहे कहीं से। सरकारी नौकरी यहीं से ❤️ SSC JE, UPPCL & UPRVUNL JE Exam Clear. SSC JE, UPPCL & UPRVUNL JE Exam Clear. #nikhil #sscje #sscjeexam Pandey Sir UPPCL या अन्य Exam के लिए बूटी Join this channel to get access to perks: https://www.youtube.com/channel/UCOCOxTddhi6wCSg42xsv31g/join (30+ Selection in UPPCL/UPRVUNL/PGCIL JE 2020 & 2021) अभी हमारे Telegram Group से जुड़े। https://t.me/+QSpTK0QPo605MjM1 Download the learning App from play store JE OCEAN ACADEMY #uppcl #uppclje #uppcljeexam2022 #uppclaeexam2022 #uppcltg2exam2022 Table of Contents transformer Alternate titles: AC transformer, alternating-current transformer Table of Contents Top Questions What is a transformer? Where are transformers used? Why is the iron core of a transformer laminated? transformer, device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage. Transformers are employed for widely varying purposes; e.g., to reduce the voltage of conventional power circuits to operate low-voltage devices, such as doorbells and toy electric trains, and to raise the voltage from electric generators so that electric power can be transmitted over long distances. Transformers change voltage through electromagnetic induction; i.e., as the magnetic lines of force (flux lines) build up and collapse with the changes in current passing through the primary coil, current is induced in another coil, called the secondary. The secondary voltage is calculated by multiplying the primary voltage by the ratio of the number of turns in the secondary coil to the number of turns in the primary coil, a quantity called the turns ratio. From fossil fuels and solar power to Thomas Edison and Nicola Tesla’s electric marvels, the world runs on energy. Harness your natural resources and test your knowledge of energy in this quiz. Air-core transformers are designed to transfer radio-frequency currents—i.e., the currents used for radio transmission; they consist of two or more coils wound around a solid insulating substance or on an insulating coil form. Iron-core transformers serve analogous functions in the audio-frequency range. Impedance-matching transformers are used to match the impedance of a source and that of its load, for most efficient transfer of energy. Isolation transformers are usually employed for reasons of safety to isolate a piece of equipment from the source of power. Get a Britannica Premium subscription and gain access to exclusive content. smart grid Table of Contents smart grid, a secure, integrated, reconfigurable, electronically controlled system used to deliver electric power that operates in parallel with a traditional power grid. Although many of its components had been developed, and some implemented, during the early 21st century, as of 2016 no smart grid was yet fully complete. This article therefore describes the possibilities and promise of the smart grid as conceptualized at that time Simply defined, an electric power grid is a network of wires, transformers, substations, and machines that connects power plants with customers. In such a traditional power grid, electricity is distributed in one direction, from power plant to customers, through a network that has few means of monitoring its transit and delivery. By contrast to this “dumb grid,” a “smart” power grid would include an array of sensors, communications networks, control systems, and computers that would improve the efficiency, security, and reliability of the end-to-end system. In particular, a smart grid could react to and minimize the impact of unforeseen events, such as power outages, giving the grid an unprecedented “self-healing” capability. Utilities would be able to charge customers variable rates based on fluctuations in supply and demand, and consumers could programmatically adjust their use of electricity in order to minimize costs. Finally, a stronger and smarter grid could do a better job of integrating wind power and solar energy into the electricity supply, and it could support a system for charging plug-in electric vehicles. A self-healing grid Even the smartest array of sensors and controllers would not be able to keep violent winds from blowing down power lines. However, a truly smart grid could at least be self-correcting and self-optimizing in the event of damage to the distribution system. That limited self-healing capacity would have three primary objectives. The most fundamental would be continual monitoring and reaction. Sensors such as phasor measurement units (PMUs) would monitor electrical parameters such as voltage and current multiple times per second and feed the data to control room operators
Category
Audio
Be the first to comment