21: Test Your Knowledge

1. How are the high temperatures needed for welding generated?
   
2. Explain the purpose of weld symbols.
   
3. What is the difference between a welding symbol and a weld symbol?
   
4. List five basic types of joints used in welding.
   
5. What is a field weld?
   
6. Why are several different drawings needed for a job that is made up of several pieces and assembled by welding?
   

Match each of the following descriptions with the correct welding symbol.

7. A fillet weld on the arrow side of the joint.
     A. B. C. D.
8. A fillet weld on the other side of the joint.
     A. B. C. D.
9. A fillet weld on both sides of the joint.
     A. B. C. D.
10. A fillet weld all of the way around the joint.
      A. B. C. D.