ISRO Mechanical & Aerospace 2011 - Question 56

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In arc welding, penetration is minimum for

  • A. DCSP
  • B. DCRP
  • C. AC
  • D. DCEN

Answer: B. DCRP

Explanation: DCRP (Reverse Polarity, Electrode Positive) puts more heat on the electrode, resulting in shallow penetration on the workpiece.

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