railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Consider the following materials: (i) Tungsten (ii) Carbon (iii) Graphite
A non-consumable electrode is made of:
1
(i) and (ii)
2
(ii) and (iii)
3
(i), (ii) and (iii)
4
(i) only