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With its origins in wound rotor induction motors with multiphase winding sets on the rotor and stator, respectively, which were invented by Nikola Tesla in 1888, [6] the rotor winding set of the doubly fed electric machine is connected to a selection of resistors via multiphase slip rings for starting. However, the slip power was lost in the ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
General Motors was the largest global automaker by annual vehicle sales for 77 consecutive years, from 1931, when it overtook Ford Motor Company, until 2008 when it was overtaken by Toyota. This reign was longer than any other automaker, and GM is still among the world's largest automakers by vehicle unit sales.
Sales of plug-in passenger cars achieved a 9% global market share of new car sales in 2021, up from 4.6% in 2020, and 2.5% in 2019. [2] [7] [8] The PEV market has been shifting towards fully electric battery vehicles. The global ratio between BEVs and PHEVs went from 56:44 in 2012, to 60:40 in 2015, and rose to 74:26 in 2019.
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