Millwright Journeyman Certification
Exam With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. Which tool is commonly used to check the flatness of a machined
surface?
A) Micrometer
B) Straightedge
C) Vernier caliper
D) Torque wrench
B) Straightedge
Rationale: A straightedge is used to check flatness or alignment of
surfaces, ensuring proper contact without gaps.
2. What is the primary purpose of a key in a shaft and hub assembly?
A) Reduce friction
B) Transmit torque
C) Provide lubrication
D) Absorb vibration
B) Transmit torque
Rationale: Keys fit into keyways in shafts and hubs to transfer
rotational force from the shaft to the hub.
, 3. When aligning a motor and a pump, what type of alignment is
preferred for close-coupled units?
A) Angular
B) Parallel
C) Soft foot
D) Combination
B) Parallel
Rationale: Parallel alignment ensures the shafts of the motor and
pump are collinear to prevent excessive wear and vibration.
4. What is the function of a shim in machinery installation?
A) Lubrication
B) Adjust elevation or alignment
C) Reduce noise
D) Increase torque
B) Adjust elevation or alignment
Rationale: Shims are thin pieces of material used to fill gaps and
achieve precise alignment or leveling of equipment.
5. Which type of bearing is most suitable for handling radial and
axial loads?
A) Ball bearing
B) Sleeve bearing
C) Tapered roller bearing
D) Needle bearing
C) Tapered roller bearing
Rationale: Tapered roller bearings are designed to accommodate both
radial and axial loads in machinery.
6. Before disassembling a piece of machinery, what is the first safety
step?
, A) Remove bolts
B) Lockout/tagout
C) Apply lubricant
D) Clean the machine
B) Lockout/tagout
Rationale: Lockout/tagout ensures the machine is de-energized and
cannot start accidentally during maintenance.
7. Which measuring tool is most accurate for measuring small
diameters?
A) Vernier caliper
B) Micrometer
C) Tape measure
D) Ruler
B) Micrometer
Rationale: Micrometers provide precise measurements to thousandths
of an inch or hundredths of a millimeter, ideal for small diameters.
8. What is the purpose of a coupler between two shafts?
A) Increase speed
B) Transmit torque and accommodate misalignment
C) Reduce load
D) Absorb heat
B) Transmit torque and accommodate misalignment
Rationale: Couplers connect shafts, transmitting torque while
allowing minor misalignments without damage.
9. Which type of hoist is most appropriate for heavy equipment
installation in a tight space?
A) Chain hoist
B) Wire rope hoist
, C) Lever hoist
D) Come-along
A) Chain hoist
Rationale: Chain hoists are compact, reliable, and capable of lifting
heavy loads in confined areas.
10. What does “soft foot” refer to in machinery installation?
A) Improper leveling of a baseplate
B) Excessive vibration
C) Loose coupling
D) Worn bearings
A) Improper leveling of a baseplate
Rationale: Soft foot occurs when one machine foot does not contact
the base properly, causing stress and misalignment.
11. Which material is commonly used for making industrial
shims?
A) Aluminum
B) Steel
C) Copper
D) All of the above
D) All of the above
Rationale: Shims can be made from various materials depending on
strength, corrosion resistance, and application requirements.
12. What is the first step in aligning a rotating shaft?
A) Tighten bolts
B) Measure misalignment
C) Apply lubricant
D) Balance the shaft
Exam With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. Which tool is commonly used to check the flatness of a machined
surface?
A) Micrometer
B) Straightedge
C) Vernier caliper
D) Torque wrench
B) Straightedge
Rationale: A straightedge is used to check flatness or alignment of
surfaces, ensuring proper contact without gaps.
2. What is the primary purpose of a key in a shaft and hub assembly?
A) Reduce friction
B) Transmit torque
C) Provide lubrication
D) Absorb vibration
B) Transmit torque
Rationale: Keys fit into keyways in shafts and hubs to transfer
rotational force from the shaft to the hub.
, 3. When aligning a motor and a pump, what type of alignment is
preferred for close-coupled units?
A) Angular
B) Parallel
C) Soft foot
D) Combination
B) Parallel
Rationale: Parallel alignment ensures the shafts of the motor and
pump are collinear to prevent excessive wear and vibration.
4. What is the function of a shim in machinery installation?
A) Lubrication
B) Adjust elevation or alignment
C) Reduce noise
D) Increase torque
B) Adjust elevation or alignment
Rationale: Shims are thin pieces of material used to fill gaps and
achieve precise alignment or leveling of equipment.
5. Which type of bearing is most suitable for handling radial and
axial loads?
A) Ball bearing
B) Sleeve bearing
C) Tapered roller bearing
D) Needle bearing
C) Tapered roller bearing
Rationale: Tapered roller bearings are designed to accommodate both
radial and axial loads in machinery.
6. Before disassembling a piece of machinery, what is the first safety
step?
, A) Remove bolts
B) Lockout/tagout
C) Apply lubricant
D) Clean the machine
B) Lockout/tagout
Rationale: Lockout/tagout ensures the machine is de-energized and
cannot start accidentally during maintenance.
7. Which measuring tool is most accurate for measuring small
diameters?
A) Vernier caliper
B) Micrometer
C) Tape measure
D) Ruler
B) Micrometer
Rationale: Micrometers provide precise measurements to thousandths
of an inch or hundredths of a millimeter, ideal for small diameters.
8. What is the purpose of a coupler between two shafts?
A) Increase speed
B) Transmit torque and accommodate misalignment
C) Reduce load
D) Absorb heat
B) Transmit torque and accommodate misalignment
Rationale: Couplers connect shafts, transmitting torque while
allowing minor misalignments without damage.
9. Which type of hoist is most appropriate for heavy equipment
installation in a tight space?
A) Chain hoist
B) Wire rope hoist
, C) Lever hoist
D) Come-along
A) Chain hoist
Rationale: Chain hoists are compact, reliable, and capable of lifting
heavy loads in confined areas.
10. What does “soft foot” refer to in machinery installation?
A) Improper leveling of a baseplate
B) Excessive vibration
C) Loose coupling
D) Worn bearings
A) Improper leveling of a baseplate
Rationale: Soft foot occurs when one machine foot does not contact
the base properly, causing stress and misalignment.
11. Which material is commonly used for making industrial
shims?
A) Aluminum
B) Steel
C) Copper
D) All of the above
D) All of the above
Rationale: Shims can be made from various materials depending on
strength, corrosion resistance, and application requirements.
12. What is the first step in aligning a rotating shaft?
A) Tighten bolts
B) Measure misalignment
C) Apply lubricant
D) Balance the shaft
