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GATE2017 ME-1: 23

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In an arc welding process, welding speed is doubled. Assuming all other process parameters to be constant, the cross-sectional area of the weld bead will 

  1. Increase by $25\%$
  2. Increase by $50\%$
  3. Reduce by $25\%$
  4. Reduce by $50\%$

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