Page 1 of 115
PIPEFITTER STAR EXAM 2 VERSIONS ALL 500 QUESTIONS
AND CORRECT DETAILED ANSWERS LATEST UPDATE
THIS YEAR - JUST RELEASED
Pipefitter Star Exam A
QUESTION: How far should the tube end be inserted into a cup-type fitting when soldering and
brazing?
a. A minimum of 1/2 the depth of the cup
b. To the bottom of the cup, minus 1/16" to allow for expansion
c. To the shoulder of the cup
d. To the depth equal to the diameter of the tubing - ANSWER-c. To the shoulder of the cup
QUESTION: In "E6010", what do the last 2 digits indicate?
a. Weld position
b. Type of current used and type of covering on electrode
c. Tensile strength of the weld metal
d. Amount of alloy in core filler wire - ANSWER-b. Type of current used and type of covering on
electrode
ALL THE BEST CHAMP!!
1
,Page 2 of 115
QUESTION: Which of the following gases is used as a shielding gas for GT AW?
a. Oxygen
b. Argon
c. Carbon dioxide
d. Compressed air - ANSWER-b. Argon
QUESTION: What are the main differences if any, between soldering and brazing?
a. In cleaning only; soldering requires typical cleaning while brazing requires none
b. There are no differences
c. The in-service requirements, brazed joints on refrigeration and medical gases, all other
services are soldered
d. Differences are the fluxes, the temperature at which the joints are made, and the
pressures/temperatures of the service - ANSWER-d. Differences are the fluxes, the temperature
at which the joints are made, and the pressures/temperatures of the service
QUESTION: How is capillary action defined?
ALL THE BEST CHAMP!!
2
,Page 3 of 115
a. Melting of filler metal to solder and/or braze a cup joint
b. Wetting action caused by the heating of flux
c. Flow of a liquid when drawn to a small space
d. Adhesion of filler metal to copper tube joints - ANSWER-c. Flow of a liquid when drawn to a
small space
QUESTION: What does the annealing process do to copper?
a. hardens
b. melts
c. softens
d. weakness - ANSWER-c. softens
QUESTION: Which of the following joints utilizes "capillary action" to make the joint?
a. Compression
b. Flared
c. Soldered
d. Yarned - ANSWER-c. Soldered
ALL THE BEST CHAMP!!
3
, Page 4 of 115
Why may flux be omitted when brazing copper tube to wrought copper fittings?
a. this is not a true statement; flux must always be used
b. The temperature at which brazing is done eliminates the need for flux
c. The flux is in the copper tube and fittings
d. The filler metal is self fluxing - ANSWER-d. The filler metal is self fluxing
QUESTION: What weld position is the 45 degree test weld position?
a. 1G
b. 2G
c. 5G
D. 6G - ANSWER-d. 6G
QUESTION: What is the primary function of a flux?
a. To create capillary action
b. To lubricate tube ends to aid in cup fitting installation
ALL THE BEST CHAMP!!
4
PIPEFITTER STAR EXAM 2 VERSIONS ALL 500 QUESTIONS
AND CORRECT DETAILED ANSWERS LATEST UPDATE
THIS YEAR - JUST RELEASED
Pipefitter Star Exam A
QUESTION: How far should the tube end be inserted into a cup-type fitting when soldering and
brazing?
a. A minimum of 1/2 the depth of the cup
b. To the bottom of the cup, minus 1/16" to allow for expansion
c. To the shoulder of the cup
d. To the depth equal to the diameter of the tubing - ANSWER-c. To the shoulder of the cup
QUESTION: In "E6010", what do the last 2 digits indicate?
a. Weld position
b. Type of current used and type of covering on electrode
c. Tensile strength of the weld metal
d. Amount of alloy in core filler wire - ANSWER-b. Type of current used and type of covering on
electrode
ALL THE BEST CHAMP!!
1
,Page 2 of 115
QUESTION: Which of the following gases is used as a shielding gas for GT AW?
a. Oxygen
b. Argon
c. Carbon dioxide
d. Compressed air - ANSWER-b. Argon
QUESTION: What are the main differences if any, between soldering and brazing?
a. In cleaning only; soldering requires typical cleaning while brazing requires none
b. There are no differences
c. The in-service requirements, brazed joints on refrigeration and medical gases, all other
services are soldered
d. Differences are the fluxes, the temperature at which the joints are made, and the
pressures/temperatures of the service - ANSWER-d. Differences are the fluxes, the temperature
at which the joints are made, and the pressures/temperatures of the service
QUESTION: How is capillary action defined?
ALL THE BEST CHAMP!!
2
,Page 3 of 115
a. Melting of filler metal to solder and/or braze a cup joint
b. Wetting action caused by the heating of flux
c. Flow of a liquid when drawn to a small space
d. Adhesion of filler metal to copper tube joints - ANSWER-c. Flow of a liquid when drawn to a
small space
QUESTION: What does the annealing process do to copper?
a. hardens
b. melts
c. softens
d. weakness - ANSWER-c. softens
QUESTION: Which of the following joints utilizes "capillary action" to make the joint?
a. Compression
b. Flared
c. Soldered
d. Yarned - ANSWER-c. Soldered
ALL THE BEST CHAMP!!
3
, Page 4 of 115
Why may flux be omitted when brazing copper tube to wrought copper fittings?
a. this is not a true statement; flux must always be used
b. The temperature at which brazing is done eliminates the need for flux
c. The flux is in the copper tube and fittings
d. The filler metal is self fluxing - ANSWER-d. The filler metal is self fluxing
QUESTION: What weld position is the 45 degree test weld position?
a. 1G
b. 2G
c. 5G
D. 6G - ANSWER-d. 6G
QUESTION: What is the primary function of a flux?
a. To create capillary action
b. To lubricate tube ends to aid in cup fitting installation
ALL THE BEST CHAMP!!
4
