1. increases
2. decreases
3. remains same
4. none of these
increases
1. one third and two third
2. two third and one third
3. equal
4. none of these
two third and one third
1. one third and two third
2. two third and one third
3. equal
4. none of these
equal
1. helium gas
2. argon gas
3. either (a) or (b)
4. none of these
either (a) or (b)
1. mild steel
2. aluminium
3. silver
4. all of these
aluminium
1. inert gas arc welding
2. MIG welding
3. Submerged arc welding
4. D.C. arc welding
inert gas arc welding
1. straight polarity
2. reversed polarity
3. both (a) and (b)
4. none of these
reversed polarity
1. straight polarity
2. reversed polarity
3. both (a) or(b)
4. none of these
straight polarity
1. direct current with reverse polarity (DCRP) is used
2. direct current with straight polarity(DCSP) is used
3. A.C. is used
4. all of the above are used
direct current with straight polarity(DCSP) is used
1. direct current with reverse polarity(DCRP) is used
2. direct current with straight polarity(DCSP) is used
3. A.C. is used
4. all of the above are used
direct current with reverse polarity(DCRP) is used