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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 acceleration of the body: Two weights P and Q are associated by the arrangement shown in Figure. Neglecting friction and the inertia of the pulleys and cord, det
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Micrometer (or Screw Gauge): There are two different types of micrometers - inside and outside micrometers. A micrometer also has two scales - Main scale and Vernier scale (Figure
define prandtl''s stress function
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Ask question #Minimum 100 whow to detect the presence of 2nd group basic radicals ?ords accepted#
A new high temperature alloy has been developed with creep properties as follows: stress exponent, m = 4.5, activation energy, Q = 110,000 J/mol and pre-exponential constant,
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