is a form of energy that can be carried by wires and is used for heating and lighting, and to provide power for machines. (根据句意填空) 相关知识点: 试题来源: 解析 Electricity 【详解】 考查名词。句意:电是一种可以通过电线传输的能量形式,用于加热和照明,并为机器提供电力。由下文“that ...
A carrying device includes a carrying frame, an energy store carried by the carrying frame, a transformer device, carried by the carrying frame, for transforming an electric current drawn from the energy store, and an electrical connection device, carried by the carrying frame, for connecting the...
A cooker usually consists of a grill, an oven, and some gas or electric rings.4. A f l is a large metal container (金属的容器) which is kept cool, usually by electricity,so that food that is put in it stays fresh.5. If you have a c with someone, you talk with them, usually ...
About 68% of the electric energy consumed by electric motors is used by medium-size motors with a nominal output power of 0.75 to 375kW. These are mostly ACinduction motorswith two to eight poles, but some are special motors (e.g., direct current, permanent magnet, switched reluctance, st...
userscanbeelectricityproducersorconsun、ers.Theareaofresponsibilityisfixedbyrelevantlegislati。nor regulati。n. [SOURCE:IEC60050-631:2023,631-01-04modified-systemoperatorconceptisaddedinthe definitionandminoreditorialmodificationsinthenote1_] 3.1.4 grid-connected,adj connectedtoanelectricpowersystem(IEV601-...
The electron–electronic enthalpy is given by (A.14)he,e=ee,e+RTeMe. In Eq. (A.12) rhs terms refer, respectively, to (iii) rate of work done on electrons by an induced electric field during electron motion, as formulated by Candler [39], Deiwert [246], and Tirskiy [54]. This...
In 23 ,there are even cars that have 24 an electric motor and a petrol motor. These types of cars are 25 hybrid(混合)cars. Most people tend to think of electric cars as a new 26 ,but they have been around for a long time. In the 27 19th and early 20th centuries electric cars ...
In a fixed speed DG, an alternating current generator produces 230 V AC, which is then converted to 48 V DC to charge the battery and power the BTS equipment. In another design, a variable speed DC generator is used and that produces DC power to fed directly to battery and BTS equipment...
9.22). This explains why, traditionally these types of boats are utilized in calm waters; indeed, should the boat move against an, even moderate, water current, the energy cost would increase substantially, thus rendering the locomotion rather expensive energetically and, in view of the flat ...
by increasing thedischarge energyor by using a high frequency current. When there is an increase in standoff distance, the discharge energy must be increased in order to increase the magnetic pressure and maintain bond quality. At a given value of standoff distance increase in magnetic pressure ...