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A wide area synchronous grid (also called an "interconnection" in North America) is a three-phase electric power grid that has regional scale or greater that operates at a synchronized utility frequency and is electrically tied together during normal system conditions.
There are three minor power grids in North America: the Alaska Interconnection, the Texas Interconnection, and the Quebec Interconnection. The Eastern, Western and Texas Interconnections are tied together at various points with DC interconnects allowing electrical power to be transmitted throughout the contiguous U.S., Canada and parts of Mexico.
The syllabus of Social Sciences, which covers History, Geography, Political Science, and Economics, had 24 chapters in Class IX as compared to 15 each in Science and Mathematics. Similarly, Class X Social Sciences had 28 chapters as compared to 16 each in Science and Mathematics.
The European Commission considers high connectivity to be beneficial, [3] and has listed several interconnection projects as Projects of Common Interest. [4] However, the national grids must also be upgraded to handle increased power flows if the values of a free energy market are to be realised in the EU.
an academic discipline – a body of knowledge given to − or received by − a disciple (student); a branch or sphere of knowledge, or field of study, that an individual has chosen to specialize in. Modern geography is an all-encompassing discipline that seeks to understand the Earth and its human and natural complexities − not merely where objects are, but how they have changed and come ...
Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. [2]
The influence of the five themes can still be found in many standards, such as the National Council for the Social Studies (NCSS) Standards for elementary grades. [9] With the increase of emphasis placed on standardized testing in the United States, social studies, and thus geography, is receiving less time in elementary classrooms. [10]
Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...