Which of the following are the two major elements required for Resistance Welding?

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RRB JE EE 22 Apr 2025 Shift 2 CBT 2 Official Paper
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  1. Arc and time
  2. Current and pressure
  3. Current and resistance
  4. Arc and pressure

Answer (Detailed Solution Below)

Option 2 : Current and pressure
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Concept:

Resistance welding is a process in which heat is generated by passing a high current through the resistance caused by the contact between two or more metal surfaces, and then applying pressure to weld them together.

The two major elements required are:

  • Current: Generates the necessary heat at the contact area.
  • Pressure: Ensures proper contact between the metals and helps form a strong joint as the metals fuse.

Arc is not involved in resistance welding; it's typical in arc welding processes.

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