railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Which of the following statements is incorrect?
1
No flux is used in gas welding of mild steel
2
Borax is the commonly used flux coating on welding electrodes.
3
Laser beam welding employs a vaccuum chamber and thus avoids use of a shielding method.
4
Ac can be used for GTAW process