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Plasma Arc Welding (PAW) is a special form of gas tungsten arc welding in which constricted plasma arc is directed at the weld area. In PAW, a tungsten electrode is contained in a specially designed nozzle that focuses a high-velocity stream of inert gas (argon or argon-hydrogen mixtures) into the region of the arc to form a high velocity, intensely hot plasma arc stream.
Temperatures in plasma arc welding attain 28000ºC or greater, hot enough to melt any known metal.
Advantages of PAW are good arc stability, better penetration control than most other arc welding process, high travel speed and excellent weld quality.
Explain Air temperature indicator
Actuators The actuator consists of the control surfaces and associated servomechanisms, and is used to change the missile attitude and trajectory or flight path.
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The following exchange rates are available to you. (You can buy or sell at the stated rates.) Mt. Fuji Bank ¥85.00/$ Mt. Rushmore Bank SF1.356/$ Mt. Blanc Bank ¥64.74/SF Assume t
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Solving Poisson''s equation find out electric field in the transition region and show that electric field is maximum at the junction of p-n diode
Reduction Gearing : Compound epicyclic reduction gears enable a greater reduction in speed to be obtained without resorting to larger components. They may be of either the fix
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