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Similarly, for pulse (10001000) the duty cycle will be 25% because the pulse remains high only for 1/4 of the period and remains low for 3/4 of the period. Electrical motors typically use less than a 100% duty cycle. For example, if a motor runs for one out of 100 seconds, or 1/100 of the time, then, its duty cycle is 1/100, or 1 percent. [10]
Limited to short circuit and globular transfer welding. Common for short-circuit gas metal arc welding of low carbon steel. C-20 (80% argon/20% CO 2) is used for short-circuiting and spray transfer of carbon steel. C-15 (85% argon/15% CO 2) is common in production environment for carbon and low alloy steels.
GTAW weld area. Manual gas tungsten arc welding is a relatively difficult welding method, due to the coordination required by the welder. Similar to torch welding, GTAW normally requires two hands, since most applications require that the welder manually feed a filler metal into the weld area with one hand while manipulating the welding torch in the other.
Radio-frequency welding, also known as dielectric welding and high-frequency welding, is a plastic welding process that utilizes high-frequency electric fields to induce heating and melting of thermoplastic base materials. [1] The electric field is applied by a pair of electrodes after the parts being joined are clamped together.
On 4 April 1965, as escorts protecting F-105s attacking the Thanh Hoa Bridge, F-100 Super Sabres fought the USAF's first air-to-air jet combat duel in the Vietnam War, in which an F-100 piloted by Captain Donald W. Kilgus of the 416th Fighter Squadron shot down a North Vietnamese Air Force [53] MiG-17, using cannon fire, while another fired AIM ...
Commodore (Rear Admiral) John D. Sloat, commander of the U.S. Navy's Pacific Squadron and his fleet of four vessels were then at anchor in the harbor of Mazatlán. [35] On hearing the news Commodore Sloat dispatched his flagship, the frigate Savannah (1842), and the Sloop Levant (1837) to Monterey harbor where
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