5. Identify any THREE hazards associated with the weldingprocess.
6. What is difference between consumable and non-consumableelectrodes? Identify one welding process that employs a consumableelectrode and one that employs a non-consumable electrode?
7. Identify any THREE functions of electrode coatings used in SMAWprocess?
8. What information the electrode designation such as AWS E6018provides?
9. What are advantages of GMAW compared to the SMAW process?
10. Identify any three metal transfer modes in relation to the GMAWprocess?.
11. Why shielding gases are used in the welding process?
12. List equipment and consumables used for the GMAW process, GTAWand SMAW processes.
13. Which of the arc processes cannot be employed for overheadwelding position?
14. How the GTAW process is different from the GMAW process, andhow it is similar to the GMAW process?
15. While using DC; which polarities can be employed for the GTAWprocess?
16. Which polarity results in high deposition rate? DEN orDCEP
17. Which polarity is better for deeper welds: DCEN or DCEP?
18. Compare heat affected zone for the laser beam welding processand the oxyfuel welding process, and comment on thedifference.
19. Explain the mechanism of resistance spot welding, and stepsinvolved in the process.
20. Which welding process would you recommend to fabricate the foodcans: resistance seam welding or laser beam welding, and why?