What is brazing?

• A process of joining materials by heating them to the brazing temperature in the presence of a filler metal

• A method of cutting materials using a laser

• A technique for painting surfaces with metallic colors

• A process of cooling metals rapidly to harden them

At what temperature does the filler metal have a liquidus in brazing?

• Above 840°F (450°C)

• Below 500°F (260°C)

• Above 1000°F (538°C)

• Below 300°F (149°C)

In braze welding, how is the filler metal distributed in the joint?

• By capillary action

• By gravity

• It is not distributed by capillary action

• By pressure

What is the appropriate temperature range for the filler metal used in braze welding?

• Below 500°F

• Between 840°F and the melting point of the base metal

• Above 900°F

• Exactly 600°F

Why is brazing preferred for metals that fit tightly?

• It is cheaper

• It provides a stronger joint

• It is faster

• It requires less skill

What kind of joints are necessary for effective brazing?

• Loose-fitting joints

• Specially designed, tight-fitting joints

• Welded joints

• Riveted joints

What is the purpose of using a proper solvent in chemical cleaning before brazing?

• To add a protective layer

• To remove oil and grease

• To polish the metal

• To increase the metal's strength

What does flux dissolve or facilitate the removal of during brazing?

• Water

• Paint

• Undesirable substances

• Metal shavings

What is the role of capillary action in brazing?

• To remove impurities

• To distribute the filler metal evenly

• To heat the base metal

• To cool the metal rapidly

Which of the following is a characteristic of a good brazing joint?

• Loose fit

• High porosity

• Strong and tight fit

• Rough surface