Question 1

List the three major functions of fluxes.

Accepted Answer

Fluxes used in soldering and brazing hav...

Question 2

____ alloys have excellent wetting, flow, and strength characteristics, but they are expensive.

Accepted Answer

A)   Tin-antimony
B)   Cadmium-silver
C)   Cadmium-zinc
D)   Copper-zincE) A) and D)
F) A) and C)

Question 3

____________________ takes place at a temperature below 840 ° F.

Accepted Answer

The answer of ____________________ takes place at a temperature below...

Question 4

Soldering fluxes are chemical compounds such as ____.

Accepted Answer

A)   fluorides
B)   chlorides
C)   boric acids
D)   muriatic acidE) All of the above
F) C) and D)

Question 5

Which of the following is an advantage of soldering or brazing?

Accepted Answer

A)   Speed of joining
B)   Less chance of damaging parts
C)   Low temperature
D)   All of the aboveE) C) and D)
F) All of the above

Question 6

Which of the following is a common mechanical method for cleaning surface contamination?

Accepted Answer

A)   Wire brushing
B)   Sand cloth
C)   Grinding
D)   All of the aboveE) B) and C)
F) None of the above

Question 7

Brazing fluxes are chemical compounds such as ____.

Accepted Answer

A)   hydrochloric acid
B)   sal ammoniac
C)   alkalies
D)   rosinE) None of the above
F) A) and B)

Question 8

When joining brass or copper to ferrous metals, a better choice than BCuP alloys is ____________________ .

Accepted Answer

The answer of When joining brass or copper to ferrous...

Question 9

What alloys make up the filler metal BAlSi?

Accepted Answer

A)   Ammonia and sodium
B)   Alum and sulfur
C)   Aluminum and silicon
D)   Aluminum and silverE) C) and D)
F) A) and B)

Question 10

The ____________________ is the temperature at which bonding takes place between the solid base material and the liquid filler metal.

Accepted Answer

The answer of The ____________________ is the temperature at which...

Question 11

The term phos-copper is used to refer to ________________.

Accepted Answer

A)   phosphorous brazing rods that are used on copper
B)   the type of joint being made using a copper alloy filler rod
C)   copper-phosphorus rods
D)   a filler rod containing phosphate and copperE) None of the above
F) B) and C)

Question 12

Fluxes that are active at room temperature ____.

Accepted Answer

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 paintedE) B) and C)
F) A) and B)

Question 13

A(n) ____________________ range is the temperature range in which a metal is partly solid and partly liquid as it is heated or cooled.

Accepted Answer

The answer of A(n) ____________________ range is the temperature range...

Question 14

In the ____ method of soldering and brazing, the entire part must be able to withstand heating without burning.

Accepted Answer

A)   furnace
B)   induction
C)   dip
D)   resistanceE) C) and D)
F) A) and C)

Question 15

Tin-leads are most commonly used for ____.

Accepted Answer

A)   food handling equipment
B)   plumbing
C)   commercial pipe production
D)   electrical connectionsE) A) and B)
F) A) and D)

Question 16

What is the paste range of an alloy of 61.9% tin and 38.1% lead?

Accepted Answer

A)   No paste range
B)   12 ° F
C)   73 ° F
D)   173 ° FE) B) and D)
F) All of the above

Question 17

The compatibility of the base materials to the filler metal will determine the ____.

Accepted Answer

A)   shear strength
B)   ductility
C)   fatigue resistance
D)   corrosion resistanceE) B) and D)
F) A) and D)

Question 18

The ____________________ of a metal is its ability to be bent repeatedly without exceeding its elastic limit and without failure.

Accepted Answer

The answer of The ____________________ of a metal is its...

Question 19

Why would a fuel gas be bubbled through a flux container?

Accepted Answer

A)   The flux will be carried to the torch where it combines with the flame.
B)   The flux helps control the flame temperature.
C)   It is used to lubricate the valves of the torch.
D)   All of the aboveE) A) and C)
F) A) and D)

Question 20

____ is the most commonly used solder in plumbing.

Accepted Answer

A)   Tin-antimony
B)   Cadmium-silver
C)   Cadmium-zinc
D)   Copper-zincE) B) and C)
F) A) and B)

Exam 32: Oxyacetylene Welding and Brazing, Braze Welding, and Soldering

Brazing fluxes are chemical compounds such as ____.

Correct AnswerverifiedShow Answer

In the ____ method of soldering and brazing, the entire part must be able to withstand heating without burning.

Correct AnswerverifiedShow Answer

The term phos-copper is used to refer to ________________.

Correct AnswerverifiedShow Answer

Which of the following is a common mechanical method for cleaning surface contamination?

Correct AnswerverifiedShow Answer

Why would a fuel gas be bubbled through a flux container?

Correct AnswerverifiedShow Answer

The ____________________ is the temperature at which bonding takes place between the solid base material and the liquid filler metal.

Correct AnswerverifiedShow Answer

____ is the most commonly used solder in plumbing.

Correct AnswerverifiedShow Answer

____ alloys have excellent wetting, flow, and strength characteristics, but they are expensive.

Correct AnswerverifiedShow Answer

Fluxes that are active at room temperature ____.

Correct AnswerverifiedShow Answer

List the three major functions of fluxes.

Correct AnswerverifiedFluxes used in soldering and brazing hav...View AnswerShow Answer

Which of the following is an advantage of soldering or brazing?

Correct AnswerverifiedShow Answer

A(n) ____________________ range is the temperature range in which a metal is partly solid and partly liquid as it is heated or cooled.

Correct AnswerverifiedShow Answer

What is the paste range of an alloy of 61.9% tin and 38.1% lead?

Correct AnswerverifiedShow Answer

When joining brass or copper to ferrous metals, a better choice than BCuP alloys is ____________________ .

Correct AnswerverifiedShow Answer

The ____________________ of a metal is its ability to be bent repeatedly without exceeding its elastic limit and without failure.

Correct AnswerverifiedShow Answer

The compatibility of the base materials to the filler metal will determine the ____.

Correct AnswerverifiedShow Answer

Soldering fluxes are chemical compounds such as ____.

Correct AnswerverifiedShow Answer

Tin-leads are most commonly used for ____.

Correct AnswerverifiedShow Answer

____________________ takes place at a temperature below 840 ° F.

Correct AnswerverifiedShow Answer

What alloys make up the filler metal BAlSi?

Correct AnswerverifiedShow Answer

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Fluxes used in soldering and brazing hav...
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