1. Name the principal groups of processes included in fusion welding.
2. What is the fundamental feature that distinguishes fusion welding from solid-state welding?
3. Define what an electrical arc is.
4. What do the terms arc-on time and arc time mean?
5. Electrodes in arc welding are divided into two categories. Name and define the two types.
6. What are the two basic methods of arc shielding?
7. Why is the heat transfer factor in arc-welding processes that utilize consumable electrodes greater than in those that use no consumable electrodes?
8. Describe the shielded metal arc-welding process.