9. Why would a fuel gas be bubbled through a flux container?
a. So the flux can be carried to the torch where it combines with the flame.
b. To help control the flame temperature.
c. It is used to lubricate the valves of the torch.
d. All of the above.
10. Which of the following is true of fluxes?
a. They are not reactive at room temperature.
b. If they are overheated, they contaminate the joint.
c. They are not able to dissolve surface oxides.
d. Fluxes are able to dissolve oils.
11. Which of the following is true of soldering and brazing fluxes?
a. They will remove dirt and oil.
b. They will remove paint and glues.
c. They eliminate the need for joint cleaning.
d. They will remove light surface oxides.
12. Fluxes that are active at room temperature:
a. Must be neutralized after completing the job.
b. Cannot be neutralized.
c. Do not have to be cleaned off the part.
d. Must only be removed if the part is to be painted.
13. In the method of soldering and brazing, the entire part must be able to withstand heating with:
a. Furnace.
b. Induction.
c. Dip.
d. Resistance.
14. Versatility, portability, and speed are all advantages of which brazing process?
a. Torch brazing.
b. Furnace brazing.
c. Induction brazing.
d. Dip brazing.
15. What alloys make up the filler metal BAISi?
a. Ammonia and sodium.
b. Alum and sulfur.
c. Aluminum and silicon.
d. Aluminum and silver.