Critical field resistance
- Critical field resistance
-
Critical field resistance is a term that is associated with a shunt DC generator. In a DC Shunt Generator, the voltage induced across the Armature Va is directly proportional to the Flux acting across it, The Flux in a DC Generator is directly proportional to the field current If. By Ohm's Law V = IR . The critical field resistance is defined as The maximum field circuit resistance (for a given speed) with which the shunt generator would excite. The shunt generator will build up voltage only if field circuit resistance is less than critical field resistance.
It is a Tangent to the Open Circuit Characteristics of the Generator(at a given speed).
References
[1] [2]
- ^ Electrical Technology - II by B.L.Thereja
- ^ Electrical Machines - I by U.A.Bakshi, V.U Bakshi
External links
Categories:
- Electric motors
- Electrical generators
Wikimedia Foundation.
2010.
Look at other dictionaries:
Critical pedagogy — Major works Pedagogy of the Oppressed … Wikipedia
Critical psychology — Psychology … Wikipedia
German resistance — Not to be confused with Werwolf. Memorial plaque to resistance members and wreath at the Bendlerblock, Berlin The German resistance (Widerstand) was the opposition by individuals and groups in Germany to Adolf Hitler or the National Socialist… … Wikipedia
German Resistance — The German Resistance refers to those individuals and groups in Nazi Germany who opposed the regime of Adolf Hitler between 1933 and 1945. Some of these engaged in active plans to remove Hitler from power and overthrow his regime. Their plans… … Wikipedia
Communication Theory as a Field — In 1999 Robert T. Craig wrote a landmark article[1] Communication Theory as a Field [2] which has since received the Best Article Award from the International Communication Association[3] as well as the Golden Anniversary Monograph Award from the … Wikipedia
Magnetic field — This article is about a scientific description of the magnetic influence of an electric current or magnetic material. For the physics of magnetic materials, see magnetism. For information about objects that create magnetic fields, see magnet. For … Wikipedia
Archaeological field survey — is the methodological process by which archaeologists (often landscape archaeologists) collect information about the location, distribution and organisation of past human cultures across a large area (e.g. typically in excess of one hectare, and… … Wikipedia
Superconductivity — is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).The electrical resistivity of a metallic … Wikipedia
superconductivity — superconduction /sooh peuhr keuhn duk sheuhn/, n. superconductive /sooh peuhr keuhn duk tiv/, superconducting, adj. superconductor /sooh peuhr keuhn duk teuhr/, n. /sooh peuhr kon deuhk tiv i tee/, n. Physics. the phenomenon of almost perfect… … Universalium
Superconducting magnet — A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire can conduct much larger electric currents than ordinary… … Wikipedia
