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During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the TIG welding is carried out at a welding speed of $120$ $mm/min$ at the same arc voltage and heat input to the material so that weld quality remains the same. The welding current (in $A$) for this process is

  1. $40.00$
  2. $44.72$
  3. $55.90$
  4. $62.25$
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