A 1.000 kW turbogenerator with a cooling temperature of 269 °C – close to absolute zero – has been made and tested in our country. In power engineering we have been building larger and larger capacity generators because they are more economical. We have 800.000 kW generators in serial production in our country; at the Elektrosila Association they are testing a 1.200.000 kW generator, and have even begun thinking about a 2.000.000 kW generator.
But you cannot go on increasing size indefinitely, for with size you must also increase structural strength, and eventually you reach a point when you simply cannot do it. Increasing the loading is no better, for this soon leads to overheating. That's where the cryogenic generator comes in. The steel rotor of a conventional turbo generator, which can weigh upwards of 100 tons, is replaced in the cryogenic generator by a revolving vessel of 770 mm diameter, at present the largest in the world, in which a coil of niobium-titanium alloy is mounted and kept at a temperature of – 269 °C by liquid helium.
In this cosmic cold, the windings acquire the amazing property of superconductivity – they have no resistance to current and so do not heat up, while generating a very large magnetic flux.
The efficiency can thus be raised to 99,3 per cent, and a unit capacity of more than 5 million kW may well be within our reach.
Выпишите ключевые слова и предложения из текста на английском языке
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- ласк. мышка, мышонок (о женщине или девушке)
- робкий, боязливый человек
- мор. мусинг
- сл. подбитый глаз; фонарь, фингал под глазом
глагол ▼ - ловить мышей
- выискивать, выслеживать (тж. mouse around, mouse about, mouse along)
- мор. накладывать найтов; принайтовить, закаболить; делать мусинг
Словосочетания to behave in a cat-and-mouse way — вести себя как кошка с мышкой
as poor as a church mouse — бедный, как церковная мышь
to click a mouse button — кликнуть кнопкой мыши
cat-and-mouse game — игра в кошки-мышки
The first mention of the wonders of the world is found in this era, when Europe already been victorious armies of Alexander the Great. Wide dissemination of Greek culture in the territories belonging to the state, which has won a great military leader, provided a notoriety individual monuments and architectural structures. But it should be noted that the "selection" Miracles happen gradually. Some names are replaced by others, and to date the list of the most magnificent works of art and architecture are:The Pyramids of GizaHanging Gardens of BabylonOlympic statue of ZeusTemple of Artemis at EphesusMausoleum of HalicarnassusThe Colossus of Rhodes