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ORACCA Brazing Certification EXAM LATEST
VERSION WITH ALL 250 QUESTIONS AND
CORRECT DETAILED SOLUTIONS WITH JUST
RELEASED THIS YEAR
ORACCA Brazing Certification Exam – Practice Questions
The following is a comprehensive study guide containing 250 randomized practice
questions designed to reflect the format and difficulty of the ORACCA Brazing
Certification Exam. The exam typically includes both a written test (covering
theory, safety, and code compliance) and a practical exam (demonstrating hands-
on joint integrity) .
1-25: General Principles & Definitions
1. What is the technical definition of a braze joint as opposed to a soldered joint
based on the filler metal melting temperature?
A) Soldering occurs above 840°F (450°C); brazing below 840°F
B) Brazing occurs above 840°F (450°C); soldering below 840°F
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C) Brazing uses a torch; soldering uses an iron
D) Brazing is only for copper; soldering is for steel
Answer: B
The American Welding Society (AWS) defines brazing as a joining process that
occurs at temperatures exceeding 840°F (450°C), which is above the melting point
of the base metals. Soldering occurs below this threshold. The temperature, not
the tool, distinguishes the two processes.
2. The "base material" in a brazing operation refers to which of the following?
A) The flux used to clean the joint
B) The metal that is cut, welded, or brazed (the workpieces)
C) The filler metal rod
D) The inert shielding gas
Answer: B
The base material constitutes the actual components being joined. While the filler
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metal flows into the joint, the base material provides the structural foundation of
the assembly.
3. What is the term for the lowest temperature at which a metal or alloy is
completely liquid?
A) Solidus
B) Eutectic point
C) Liquidus
D) Critical temperature
Answer: C
The liquidus is the specific temperature above which a material is entirely molten.
In contrast, the solidus is the temperature where it begins to melt. Understanding
the liquidus is critical for maintaining proper brazing temperatures without
burning the base metal.
4. What is the primary purpose of flux in the brazing process?
A) To add strength to the joint
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B) To prevent oxidation and dissolve oxides on the metal surface
C) To act as a filler metal
D) To cool the joint rapidly
Answer: B
Flux performs the chemical function of removing and preventing the formation of
oxides on the base metal surface. Without flux, the filler metal may "bead up"
rather than flow into the capillary space, resulting in a weak, leaky joint.
5. Which of the following filler metals is most commonly used for brazing copper
refrigerant lines in HVACR?
A) Aluminum-silicon (Al-Si)
B) Copper-phosphorus (BCuP) alloys
C) Silver-copper-zinc (BAg)
D) Nickel-based (BNi)
Answer: B
BCuP (Copper-Phosphorus) alloys are the industry standard for joining copper to
4
SUCCESS!
ORACCA Brazing Certification EXAM LATEST
VERSION WITH ALL 250 QUESTIONS AND
CORRECT DETAILED SOLUTIONS WITH JUST
RELEASED THIS YEAR
ORACCA Brazing Certification Exam – Practice Questions
The following is a comprehensive study guide containing 250 randomized practice
questions designed to reflect the format and difficulty of the ORACCA Brazing
Certification Exam. The exam typically includes both a written test (covering
theory, safety, and code compliance) and a practical exam (demonstrating hands-
on joint integrity) .
1-25: General Principles & Definitions
1. What is the technical definition of a braze joint as opposed to a soldered joint
based on the filler metal melting temperature?
A) Soldering occurs above 840°F (450°C); brazing below 840°F
B) Brazing occurs above 840°F (450°C); soldering below 840°F
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C) Brazing uses a torch; soldering uses an iron
D) Brazing is only for copper; soldering is for steel
Answer: B
The American Welding Society (AWS) defines brazing as a joining process that
occurs at temperatures exceeding 840°F (450°C), which is above the melting point
of the base metals. Soldering occurs below this threshold. The temperature, not
the tool, distinguishes the two processes.
2. The "base material" in a brazing operation refers to which of the following?
A) The flux used to clean the joint
B) The metal that is cut, welded, or brazed (the workpieces)
C) The filler metal rod
D) The inert shielding gas
Answer: B
The base material constitutes the actual components being joined. While the filler
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metal flows into the joint, the base material provides the structural foundation of
the assembly.
3. What is the term for the lowest temperature at which a metal or alloy is
completely liquid?
A) Solidus
B) Eutectic point
C) Liquidus
D) Critical temperature
Answer: C
The liquidus is the specific temperature above which a material is entirely molten.
In contrast, the solidus is the temperature where it begins to melt. Understanding
the liquidus is critical for maintaining proper brazing temperatures without
burning the base metal.
4. What is the primary purpose of flux in the brazing process?
A) To add strength to the joint
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B) To prevent oxidation and dissolve oxides on the metal surface
C) To act as a filler metal
D) To cool the joint rapidly
Answer: B
Flux performs the chemical function of removing and preventing the formation of
oxides on the base metal surface. Without flux, the filler metal may "bead up"
rather than flow into the capillary space, resulting in a weak, leaky joint.
5. Which of the following filler metals is most commonly used for brazing copper
refrigerant lines in HVACR?
A) Aluminum-silicon (Al-Si)
B) Copper-phosphorus (BCuP) alloys
C) Silver-copper-zinc (BAg)
D) Nickel-based (BNi)
Answer: B
BCuP (Copper-Phosphorus) alloys are the industry standard for joining copper to
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