Pipefitter Star Exam Latest Questions and Answers |
Fall 2025/2026 Update | 100% Correct
Question 1
Compressed gas cylinders shall only be moved when: _______.
a. the pressure regulators are installed.
b. the safety caps are installed
c. they are empty
d. they are full
Correct Answer
b. the safety caps are installed
Question 2
What does the "G" represent in the 2G, 5% and 6G positions?
a. gap
b. groove
c. gravity
d. gauss
Correct Answer
b. groove
Page 1 of 78
,Question 3
The piping arrangement that prevents a boiler from draining to a dangerous level is the ________.
a. equalizer piping
b. hartford loop
c. dry return
d. wet return
Correct Answer
b. hartford loop
Question 4
A (n) _______ is the part of a refrigeration system responsible for the absorption of heat from a product or building spaces
into the fluid (refrigerant) of the system
a. expansion device
b. compressor
c. evaporator
d. condenser
Correct Answer
c. evaporator
Page 2 of 78
,Question 5
A ________ evaporator is placed in the airstream to cool and remove humidity.
a. chilled water coil
b. dry expansion
c. direct expansion
d. flooded
Correct Answer
c. direct expansion
Question 6
A ____ valve installed backwards on a steam system may be used as a vacuum breaker.
a. triple duty
b. globe
c. check
d. ball
Correct Answer
c. check
Page 3 of 78
, Question 7
To assemble a four-bolt flange
a. set up opposite bolts fairly tight, and then tighten the bolts equally in a crossing pattern
b. tighten all bolts firmly in a clockwise manner
c. start the nuts and tighten all bolts in a counterclockwise manner.
d. tighten the top bolt firmly, followed by the side bolts, and finish with the bottom bolt
Correct Answer
a. set up opposite bolts fairly tight, and then tighten the bolts equally in a crossing pattern
Question 8
What can happen if an orifice plate is installed backwards?
a. decreased friction loss
b. erratic readings
c. decreased flow rate
d. nothing
Correct Answer
b. erratic readings
Page 4 of 78
Fall 2025/2026 Update | 100% Correct
Question 1
Compressed gas cylinders shall only be moved when: _______.
a. the pressure regulators are installed.
b. the safety caps are installed
c. they are empty
d. they are full
Correct Answer
b. the safety caps are installed
Question 2
What does the "G" represent in the 2G, 5% and 6G positions?
a. gap
b. groove
c. gravity
d. gauss
Correct Answer
b. groove
Page 1 of 78
,Question 3
The piping arrangement that prevents a boiler from draining to a dangerous level is the ________.
a. equalizer piping
b. hartford loop
c. dry return
d. wet return
Correct Answer
b. hartford loop
Question 4
A (n) _______ is the part of a refrigeration system responsible for the absorption of heat from a product or building spaces
into the fluid (refrigerant) of the system
a. expansion device
b. compressor
c. evaporator
d. condenser
Correct Answer
c. evaporator
Page 2 of 78
,Question 5
A ________ evaporator is placed in the airstream to cool and remove humidity.
a. chilled water coil
b. dry expansion
c. direct expansion
d. flooded
Correct Answer
c. direct expansion
Question 6
A ____ valve installed backwards on a steam system may be used as a vacuum breaker.
a. triple duty
b. globe
c. check
d. ball
Correct Answer
c. check
Page 3 of 78
, Question 7
To assemble a four-bolt flange
a. set up opposite bolts fairly tight, and then tighten the bolts equally in a crossing pattern
b. tighten all bolts firmly in a clockwise manner
c. start the nuts and tighten all bolts in a counterclockwise manner.
d. tighten the top bolt firmly, followed by the side bolts, and finish with the bottom bolt
Correct Answer
a. set up opposite bolts fairly tight, and then tighten the bolts equally in a crossing pattern
Question 8
What can happen if an orifice plate is installed backwards?
a. decreased friction loss
b. erratic readings
c. decreased flow rate
d. nothing
Correct Answer
b. erratic readings
Page 4 of 78
