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2. List of hydroelectric power station failures - Wikipedia

   en.wikipedia.org/wiki/List_of_hydroelectric...

   The 180MW Francis turbine-generator running at full speed was instantaneously stopped by a foreign body left in the penstock following maintenance.[7] The installation shifted about 2m within the base of the 180m high earth and rock fill gravity dam wall of the 3,906GL reservoir.

3. Islanding - Wikipedia

   en.wikipedia.org/wiki/Islanding

   In a power outage, the microgrid controller disconnects the local circuit from the grid on a dedicated switch and forces any online distributed generators to power the local load. [3] [4] Unintentional islanding is a dangerous condition that may induce severe stress on the generator, as the generator must match any changes in electrical load alone

4. Engine–generator - Wikipedia

   en.wikipedia.org/wiki/Engine–generator

   An engine–generator is the combination of an electrical generator and an engine (prime mover) mounted together to form a single piece of equipment. This combination is also called an engine–generator set or a gen-set. In many contexts, the engine is taken for granted and the combined unit is simply called a generator. An engine–generator ...

5. Unit commitment problem in electrical power production

   en.wikipedia.org/wiki/Unit_Commitment_Problem_in...

   The unit commitment problem (UC) in electrical power production is a large family of mathematical optimization problems where the production of a set of electrical generators is coordinated in order to achieve some common target, usually either matching the energy demand at minimum cost or maximizing revenue from electricity production.

6. Magnetohydrodynamic generator - Wikipedia

   en.wikipedia.org/wiki/Magnetohydrodynamic_generator

   The generator can also experience losses from the Hall effect current, which makes the Faraday duct inefficient. [citation needed] Most further refinements of MHD generators have tried to solve this problem. The optimal magnetic field on duct-shaped MHD generators is a sort of saddle shape.

7. Michael J Fox cheered at White House as he steps forward to ...

   www.aol.com/news/biden-award-medal-freedom-19...

   The nation’s highest civilian award honors individuals who ‘made exemplary contributions to the prosperity, values, or security of the United States, world peace, or other significant societal ...

8. Is It Safe to Use Expired Vitamins? The Truth About Vitamin ...

   www.aol.com/vitamins-expire-nutritionists-weigh...

   When you buy a bottle of vitamins from a nutrition store, you’ll probably notice a best-by date on the bottom of the jar. But that inscribed number isn’t a hard-and-fast rule—there is some ...

9. Electric generator - Wikipedia

   en.wikipedia.org/wiki/Electric_generator

   A magnetohydrodynamic generator directly extracts electric power from moving hot gases through a magnetic field, without the use of rotating electromagnetic machinery. MHD generators were originally developed because the output of a plasma MHD generator is a flame, well able to heat the boilers of a steam power plant. The first practical design ...