1|Page
Millwright Journeyman Certification Exam, Industrial
Mechanic Program||Verified Exam!!||, 2026/2027 –
Questions with Verified Answers and Detailed
Rationales||Newest Exam!!!
4. Large impulse turbines will use what of rotor?
A. Build-up rotors.
B. Solid rotors
C. Combination of solid and build-up rotors
D. All of the above - Answer-D. All of the above
5. The most effect purging medium to use when dealing
with iron sulphide is:
A. air
B. carbon dioxide
C. nitrogen
D. water - Answer-D. water
,2|Page
6. The shape of a ball bearing is ______ when a load is
applied to the ball.
A. elliptical
B. circular
C. rectangle
D. radial
E. trapezoid - Answer-A. elliptical
7. Which of the following is a typical 4000 hour inspection
duty with compressors?
A. Service the crankcase breather
B. Take oil samples
C. Recalibrate all temperature and pressure gauges
D. Check gas discharge and inlet temperatures - Answer-
A. Service the crankcase breather
8. What does the term nominal filter refer to?
A. A ratio of large to small particles found in a test run.
,3|Page
B. The largest particle that will pass
through the filter under specific test conditions
C. The length of time a filter is functional based on particle
tests.
D. That a stated percentage of a certain size particle will
be stopped - Answer-D. That a stated percentage of a
certain size particle will be stopped
9. Which of the following best defines a breaker fabric?
A. An open mesh used to reinforce against longitudinal
breaking under impact
B. A single layer of fabric that provides load support
C. The traverse yarns that run perpendicular to the warp
yarns
D. Yarns in the fabric that provide the tension strength
E. An extra layer of rubber compound that protects against
separation - Answer-A. An open mesh used to reinforce
against longitudinal breaking under impact
10. Regulators are classified as to their:
, 4|Page
A. stage and type
B. weight and size
C. service and type
D. color and size - Answer-C. service and type
1. When the downward force at C2 is 100 lb and D2 = 2.5
inches, the upward force at C1 will
be ________lb if D1 = 4 inches.
A. 160
B. 256
C. 384
D. 240 - Answer-A. 160
x/12.56 sq in = 100 lbs/7.85 sq in
x = (100lbs/7.85 sq in)12.56
x = 160 lbs
2. Add the following decimals and express the answer to
three decimal places. 0.4789 + 3.125 + 9.656
A. 13.26
Millwright Journeyman Certification Exam, Industrial
Mechanic Program||Verified Exam!!||, 2026/2027 –
Questions with Verified Answers and Detailed
Rationales||Newest Exam!!!
4. Large impulse turbines will use what of rotor?
A. Build-up rotors.
B. Solid rotors
C. Combination of solid and build-up rotors
D. All of the above - Answer-D. All of the above
5. The most effect purging medium to use when dealing
with iron sulphide is:
A. air
B. carbon dioxide
C. nitrogen
D. water - Answer-D. water
,2|Page
6. The shape of a ball bearing is ______ when a load is
applied to the ball.
A. elliptical
B. circular
C. rectangle
D. radial
E. trapezoid - Answer-A. elliptical
7. Which of the following is a typical 4000 hour inspection
duty with compressors?
A. Service the crankcase breather
B. Take oil samples
C. Recalibrate all temperature and pressure gauges
D. Check gas discharge and inlet temperatures - Answer-
A. Service the crankcase breather
8. What does the term nominal filter refer to?
A. A ratio of large to small particles found in a test run.
,3|Page
B. The largest particle that will pass
through the filter under specific test conditions
C. The length of time a filter is functional based on particle
tests.
D. That a stated percentage of a certain size particle will
be stopped - Answer-D. That a stated percentage of a
certain size particle will be stopped
9. Which of the following best defines a breaker fabric?
A. An open mesh used to reinforce against longitudinal
breaking under impact
B. A single layer of fabric that provides load support
C. The traverse yarns that run perpendicular to the warp
yarns
D. Yarns in the fabric that provide the tension strength
E. An extra layer of rubber compound that protects against
separation - Answer-A. An open mesh used to reinforce
against longitudinal breaking under impact
10. Regulators are classified as to their:
, 4|Page
A. stage and type
B. weight and size
C. service and type
D. color and size - Answer-C. service and type
1. When the downward force at C2 is 100 lb and D2 = 2.5
inches, the upward force at C1 will
be ________lb if D1 = 4 inches.
A. 160
B. 256
C. 384
D. 240 - Answer-A. 160
x/12.56 sq in = 100 lbs/7.85 sq in
x = (100lbs/7.85 sq in)12.56
x = 160 lbs
2. Add the following decimals and express the answer to
three decimal places. 0.4789 + 3.125 + 9.656
A. 13.26
