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In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system , as a safety interlock , or as a counter enumerating objects passing a point.
A thermal switch (sometimes thermal reset or thermal cutout (TCO)) is a device which normally opens at a high temperature (often with a faint "plink" sound) and re-closes when the temperature drops. The thermal switch may be a bimetallic strip , often encased in a tubular glass bulb to protect it from dust or short circuit .
Residential central air systems are usually from 1 to 5 tons (3.5 to 18 kW) in capacity. [ citation needed ] The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of ...
Honeywell electronic thermostat in a store. Heating and cooling losses from a building (or any other container) become greater as the difference in temperature increases. A programmable thermostat allows reduction of these losses by allowing the temperature difference to be reduced at times when the reduced amount of heating or cooling would not be objectionable.
Escape from Furnace is a series of five novels written by British author Alexander Gordon Smith. [1] The books are written from perspective of the teenage protagonist Alex Sawyer and describe his incarceration in the fictional London prison Furnace Penitentiary.
carrier An aircraft carrier. carronade A short, smoothbore, cast-iron naval cannon, used from the 1770s to the 1850s as a powerful, short-range, anti-ship and anti-crew weapon. carry away To suddenly break a spar, rope or other part of a ship's equipment. May be caused, for example, by overloading, stress of weather, collision or battle damage.
Most Panel installations across the country were replaced by modern systems during the 1970s and the last Panel switch was decommissioned in the BIgelow central office in Newark in 1983. [ 267 ] While Newark, like all of New Jersey, had area code 201 assigned for long-distance calling since 1947, the rate center was reassigned to area code 973 ...
1907: The scout movement created by Lord Baden-Powell (1857–1941), on finding that his 1899 military training manual Aids to Scouting was being used by teachers and youth organisations. [ 248 ] 1908: The reserve forest which would become the Kaziranga National Park founded by Lord Curzon of Kedleston to protect the dwindling species of ...