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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
Determine the angular-velocity of uniform bar: A uniform bar of length l and mass M is hinged at its end B and is released from its horizontal position BA. Determine its angul
compressor
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If Engine Misfires Causes of Problem Remedy Incorrect Electrode gap of spark plug Electrode worn out Foule
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