Abstract: Synchronous machines usually operate at constant speed in power systems. However, there are specific applications, such as the generators used in diesel-electric transmissions or Type 4 wind ...

Variable motorway speed limits have been in place in the United Kingdom on some routes for years now. Despite being controversial in some circles, these have clear benefits for modern motoring, as ...

Electronic variable speed limit signs are now active on I-35 in Fort Worth and U.S. 54 in El Paso, with broader rollout planned. Speeds can be temporarily lowered by up to 10 mph during weather events ...

Drivers across Texas may soon see speed limits change in real time. Digital signs flashing different speed limits are starting to pop up on Texas highways. They're part of a new initiative in the ...

An example of what variable speed limit signs look like above a highway in Washington. Courtesy of the Washington State Department of Transportation When icy conditions led to a 133-car pileup on ...

Using variable speed drives on pumps reduces parasitic energy loss, enables proper maintenance and lowers capital costs. This article examines a method for determining the optimal number and speed of ...

The idea is one of several being considered by Lancaster County officials in an effort to reduce the number of traffic fatalities and serious injuries on county roadways in the next 25 years. As part ...

Annuities can be a solid way to secure guaranteed income in retirement. However, they remain notoriously complex, particularly when it comes to comparing fees. Unlike ETFs or mutual funds, where fees ...

COLUMBUS, Ind. & DENVER, Colo.--(BUSINESS WIRE)--Cummins Inc. (NYSE: CMI) and Liberty Energy Inc. (NYSE: LBRT) (“Liberty”) today announced that the industry’s first natural gas variable speed, large ...

LINCOLN, Neb. (KNOP) - Driving down I-80 between Deuel County to the Wyoming state line is looking a little different this holiday season. The Nebraska Department of Transportation announced Tuesday ...