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A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor.
Rupert "Bob" Strickland (October 23, 1932 – September 26, 2008), was an American reporter, journalist, and news anchor. His nearly three-decade career includes his work with Washington D.C.'s CBS affiliate WUSA-TV in D.C. while serving in the United States Air Force.
In 2003, he assumed full-time duties at NBC News, where he became a substitute anchor for NBC Nightly News and Today. Holt became a full-time co-anchor of Weekend Today following the death of previous co-anchor David Bloom. [22] Until late 2005, he also anchored a two-hour daily newscast on MSNBC. On May 9, 2007, Holt was named anchor of the ...
The key feature of the Ward Leonard control system is the ability to smoothly vary the speed of a DC motor, including reversing it, by controlling the field and hence the output voltage of a DC generator, as well as the field of the motor itself. As the speed of a DC motor is dictated by the supplied voltage, this gives simple speed control ...
David Jason Muir (/ ˈ m jʊər / MURE; born November 8, 1973) is an American journalist and anchor for ABC World News Tonight and co-anchor of the ABC News magazine 20/20, part of the news department of the ABC broadcast-television network, based in New York City.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 February 2025. American television news program ABC World News Tonight Current version of logo, used since August 9, 2021 Also known as News and Views (1948–1951) After The Deadlines (1951–1952) All-Star News (1952–1953) John Daly and the News (1953–1960) ABC Evening Report (1960–1962) Ron ...
The firings came abruptly, as Johnson and co-anchor Michele Marsh previewed the upcoming 11pm newscast at the end of the 6 pm news, with their dismissals occurring in the interim four and a half hours. [7] Johnson was not out of work for long, as he and his WCBS co-anchor Michele Marsh were hired by WNBC to anchor the station's new noon ...
A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of electric power to driving mechanical energy, and DC distribution systems were used for more than 100 years ...