Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after the commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use.
A motherboard is the main printed circuit board (PCB) in general-purpose computers and other expandable systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. Unlike a backplane, a motherboard usually contains significant sub-systems, such as the central processor, the chipset's input/output and memory controllers, interface connectors, and other components integrated for general use.
In electrical engineering, the power factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit. Real power is the average of the instantaneous product of voltage and current and represents the capacity of the electricity for performing work. Apparent power is the product of root mean square (RMS) current and voltage. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power may be greater than the real power, so more current flows in the circuit than would be required to transfer real power alone. A power factor magnitude of less than one indicates the voltage and current are not in phase, reducing the average product of the two. A negative power factor occurs when the device generates real power, which then flows back towards the source.
Bharat Heavy Electricals Limited (BHEL) is an Indian central public sector undertaking and the largest government-owned electrical/ industrial technology company. It is owned by the Government of India, with administrative control by the Ministry of Heavy Industries. Established in 1956 with the help of Soviet technology, BHEL is based in New Delhi.
Automatic test equipment or automated test equipment (ATE) is any apparatus that performs tests on a device, known as the device under test (DUT), equipment under test (EUT) or unit under test (UUT), using automation to quickly perform measurements and evaluate the test results. An ATE can be a simple computer-controlled digital multimeter, or a complicated system containing dozens of complex test instruments capable of automatically testing and diagnosing faults in sophisticated electronic packaged parts or on wafer testing, including system on chips and integrated circuits.
Transformer oil or insulating oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled wet transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers. Its functions are to insulate, suppress corona discharge and arcing, and to serve as a coolant.
This is an alphabetical list of articles pertaining specifically to electrical and electronics engineering. For a thematic list, please see List of electrical engineering topics. For a broad overview of engineering, see List of engineering topics. For biographies, see List of engineers.
KEMA NV, established in 1927, is a global energy consultancy company headquartered in Arnhem, Netherlands. It offers management consulting, technology consulting & services to the energy value chain that include business and technical consultancy, operational support, measurements & inspection, and testing & certification services.
The College of Technology and Engineering (CTAE), is a public engineering college located in Udaipur, Rajasthan, India. It is one of the top ranking engineering institute of the state offering varied courses in engineering.
The Air Movement and Control Association International, Inc. (AMCA) is an American trade body that sets standards for Heating, Ventilation and Air Conditioning (HVAC) equipment. It rates fan balance and vibration, aerodynamic performance, air density, speed and efficiency.
Hoare Lea is a UK-based, multi-disciplinary engineering consultancy firm, specialising in building services. The firm works with clients from the detailed design stage right through to delivery.
Arun Phadke is a University Distinguished Research Professor in the Department of Electrical and Computer Engineering at Virginia Tech. Along with fellow Virginia Tech professor James Thorp, Dr. Phadke received The Franklin Institute's 2008 Benjamin Franklin Medal in Electrical Engineering for their contributions to the power industry, particularly microprocessor controllers and Phasor measurement unit (PMU) technology in electric power systems.
Megger Group Limited is a British manufacturing company that manufactures electronic test equipment and measuring instruments for electrical power applications.
The field of electrical and electronics engineering has grown to include many related disciplines and occupations.
CESI - Centro Elettrotecnico Sperimentale Italiano "Giacinto Motta" is a company that provides testing and certification services, energy consultancy, engineering and technology consulting for the electricity sector worldwide. CESI is headquartered in Milan, Italy and was founded in 1956. It currently has offices and laboratories in five continents and over 70 countries.
From 1929 to the late 1960s, large alternating current power systems were modelled and studied on AC network analyzers or transient network analyzers. These special-purpose analog computers were an outgrowth of the DC calculating boards used in the very earliest power system analysis. By the middle of the 1950s, fifty network analyzers were in operation. AC network analyzers were much used for power-flow studies, short circuit calculations, and system stability studies, but were ultimately replaced by numerical solutions running on digital computers. While the analyzers could provide real-time simulation of events, with no concerns about numeric stability of algorithms, the analyzers were costly, inflexible, and limited in the number of buses and lines that could be simulated. Eventually powerful digital computers replaced analog network analyzers for practical calculations, but analog physical models for studying electrical transients are still in use.
The Indian Diamond Institute (IDI) is a Government of India sponsored autonomous higher school of learning in the fields of diamonds, gems and jewellery in India. The Institute is located in Surat, Gujarat, India and is 263 km away from Mumbai. Indian Diamond Institute is an Authorised Assayer of Department of Customs, Government of India.
This glossary of electrical and electronics engineering is a list of definitions of terms and concepts related specifically to electrical engineering and electronics engineering. For terms related to engineering in general, see Glossary of engineering.
