railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Machining Processes and Machine Tools Unconventional Machining Processes
Following statements are TRUE for Plasma Arc Cutting (PAC), Except for:
1
Sources of heat generation in PAC is recombination of ions and electrons into atoms and/or recombination of atoms into molecules.
2
PAC can be used to cut any material having high thermal conductivity, high heat capacity and good oxidation resistance.
3
PAC cannot be used to cut the materials which cannot be cut by ordinary methods like oxy-fuel cutting.
4
Very high temperature about 28000°C – 30000°C is reached during PAC.