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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.
Engine lubrication systems There are basically two types of lubrication system at present in use in gas turbine engines:- a) Recirculatory. In this system, oil is distribut
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1. The cantilever beam-like structure shown below is modeled using a 2 x 10 mesh of rectangular four-node plane stress elements of equal size. Geometric boundary conditions at x ?
what is a procedure of solving the questions using hanning window while designing a fir filter?
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Aerospace propulsion is essentially based on Newton'slaws of motion (1687): • A body on which there is no resultant force will move ina straight line with constant velocity.
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