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For example, if the load power factor were as low as 0.7, the apparent power would be 1.4 times the real power used by the load. Line current in the circuit would also be 1.4 times the current required at 1.0 power factor, so the losses in the circuit would be doubled (since they are proportional to the square of the current).
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m 2 ⋅s −3. [ 1 ] [ 2 ] [ 3 ] It is used to quantify the rate of energy transfer .
Li (Chinese: 鬲; pinyin: lì) is a kind of cookware in ancient China, used for cooking and heating. [1] Ceramic li appeared in the late Neolithic Age, and bronze li were popular from the Shang dynasty to the Spring and Autumn period. In the late Warring States period, with the popularity of stoves, they were gradually replaced by kettles.
In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity. . Calculations are simplified because quantities expressed as per-unit do not change when they are referred from one side of a transformer to t
A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities.
The area has been producing pottery since the Neolithic, and over 100 kiln-sites have now been excavated, but large-scale production of a variety of wares began under the late Ming dynasty, and continues to the present. [3] The Nanfeng Kiln has been in operation for some 500 years, and is now a popular tourist attraction. [4]
Qingbai ware (Chinese: 青白; pinyin: qīngbái; lit. 'green-white') is a type of Chinese porcelain produced under the Song dynasty and Yuan dynasty, defined by the ceramic glaze used. [1] Qingbai ware is white with a blue-greenish tint, and is also referred to as Yingqing ("shadow green", although this name appears only to date from the 18th ...
Hard-paste porcelain was invented in China, and it was also used in Japanese porcelain.Most of the finest quality porcelain wares are made of this material. The earliest European porcelains were produced at the Meissen factory in the early 18th century; they were formed from a paste composed of kaolin and alabaster and fired at temperatures up to 1,400 °C (2,552 °F) in a wood-fired kiln ...