Which of the following processes uses non-consumable electrode?

Explanation

Explanation: Tungsten I nert Gas (TIG) or Gas Tungsten Arc (GTA) welding is the arc welding process in which arc is generated between non-consumable tungsten electrode and workpiece. Gas metal arc welding (GMAW) or Metal inert gas arc welding (MIG): In this process, the arc is formed between a continuous, automatically fed, metallic consumable electrode and welding job in an atmosphere of inert gas, and hence this is called metal inert gas arc welding (MIG) process. Submerged arc welding: Here the arc is formed between a continuous, automatically fed, metallic consumable electrode and the welding job under a heap of powdered/granulated flux. The arc is totally submerged in the flux (invisible). Manual metal arc welding (MMAW) or shielded metal arc welding (SMAW) is the oldest and most widely used process being used for fabrication. This is an arc welding process in which the welding heat is obtained from an arc, formed between a metallic (consumable) electrode and welding job.