1|Page
NCCER MILLWRIGHT EXAM QUESTIONS
AND ANSWERS 100% PASS
What is used to highlight wear pattern in gear teeth? - ANSWER ✔✔-Bluing
The first step prior to pre-aligning a motor horizontally - ANSWER ✔✔-Inspect base plate
What 3 dimensions should be taken to fabricate a new flange gasket? - ANSWER ✔✔-Diameter of pipe
opening, outside diameter of flange, diameter of bolt circle
On assembly, what is used to identify sub assemblies? - ANSWER ✔✔-Circles
Bearing that is set too tight will cause premature failure because of - ANSWER ✔✔-Increased friction and
decreased clearance
Motors with open bearings should be thoroughly cleaned every - ANSWER ✔✔-Year
Most vertical pumps are driven by - ANSWER ✔✔-Electric motors
To measure shoulder relief on a shaft, use a - ANSWER ✔✔-Radius gauge
A flexible coupling is often installed on a pump and a motor to compensate for - ANSWER ✔✔-Small
differences in alignment
Machine frame distortion caused by tightening or loosening bolts of a single foot is called - ANSWER
✔✔-Soft foot
What is gasket creep? - ANSWER ✔✔-Loss of thickness
A turbine has been secured. What piece of equipment keeps the rotor from bowing? - ANSWER ✔✔-The
turning gear
Created by ©EmilyCharlene 2025. All rights reserved.
, 2|Page
An impeller pumps efficiently when installed to - ANSWER ✔✔-Turn in one direction
Which of the following is not allowed on any job site? - ANSWER ✔✔-A metal hard hat
Cure for pump cavitations include - ANSWER ✔✔-Lowering the required head by reducing discharge
When transferring elevations, which tool is most precise? - ANSWER ✔✔-Optical level
Which shade of tinted lens should be used when oxy-fuel cutting and welding? - ANSWER ✔✔-4-6
Why are colored threads woven into synthetic web slings? - ANSWER ✔✔-To indicate damage and/or
wear
What is the pressure rise for a blower? - ANSWER ✔✔-2-10 psig
A packing puller is used to remove packing material from - ANSWER ✔✔-A stuffing box
What type of drawing details inside dimension structural column locations and mounting? - ANSWER
✔✔-Foundation layout
What are the two types of blades used in steam turbines? - ANSWER ✔✔-Impulse and reaction blades
Which radial fan blower is considered general purpose? - ANSWER ✔✔-Open type
What does a multi stage reciprocating compressor provide? - ANSWER ✔✔-Higher pressure
What is the most common cause of repeatability? - ANSWER ✔✔-Soft foot
The best way to fabricate a new flange gasket is to - ANSWER ✔✔-Use the old gasket as a template
Which of the following is the most common cause of wear on only one edge of a v belt? - ANSWER ✔✔-
Sheave groove misalignment
Power is transmitted from one shaft to another adjacent parallel shaft with - ANSWER ✔✔-Belts and
chains
Created by ©EmilyCharlene 2025. All rights reserved.
NCCER MILLWRIGHT EXAM QUESTIONS
AND ANSWERS 100% PASS
What is used to highlight wear pattern in gear teeth? - ANSWER ✔✔-Bluing
The first step prior to pre-aligning a motor horizontally - ANSWER ✔✔-Inspect base plate
What 3 dimensions should be taken to fabricate a new flange gasket? - ANSWER ✔✔-Diameter of pipe
opening, outside diameter of flange, diameter of bolt circle
On assembly, what is used to identify sub assemblies? - ANSWER ✔✔-Circles
Bearing that is set too tight will cause premature failure because of - ANSWER ✔✔-Increased friction and
decreased clearance
Motors with open bearings should be thoroughly cleaned every - ANSWER ✔✔-Year
Most vertical pumps are driven by - ANSWER ✔✔-Electric motors
To measure shoulder relief on a shaft, use a - ANSWER ✔✔-Radius gauge
A flexible coupling is often installed on a pump and a motor to compensate for - ANSWER ✔✔-Small
differences in alignment
Machine frame distortion caused by tightening or loosening bolts of a single foot is called - ANSWER
✔✔-Soft foot
What is gasket creep? - ANSWER ✔✔-Loss of thickness
A turbine has been secured. What piece of equipment keeps the rotor from bowing? - ANSWER ✔✔-The
turning gear
Created by ©EmilyCharlene 2025. All rights reserved.
, 2|Page
An impeller pumps efficiently when installed to - ANSWER ✔✔-Turn in one direction
Which of the following is not allowed on any job site? - ANSWER ✔✔-A metal hard hat
Cure for pump cavitations include - ANSWER ✔✔-Lowering the required head by reducing discharge
When transferring elevations, which tool is most precise? - ANSWER ✔✔-Optical level
Which shade of tinted lens should be used when oxy-fuel cutting and welding? - ANSWER ✔✔-4-6
Why are colored threads woven into synthetic web slings? - ANSWER ✔✔-To indicate damage and/or
wear
What is the pressure rise for a blower? - ANSWER ✔✔-2-10 psig
A packing puller is used to remove packing material from - ANSWER ✔✔-A stuffing box
What type of drawing details inside dimension structural column locations and mounting? - ANSWER
✔✔-Foundation layout
What are the two types of blades used in steam turbines? - ANSWER ✔✔-Impulse and reaction blades
Which radial fan blower is considered general purpose? - ANSWER ✔✔-Open type
What does a multi stage reciprocating compressor provide? - ANSWER ✔✔-Higher pressure
What is the most common cause of repeatability? - ANSWER ✔✔-Soft foot
The best way to fabricate a new flange gasket is to - ANSWER ✔✔-Use the old gasket as a template
Which of the following is the most common cause of wear on only one edge of a v belt? - ANSWER ✔✔-
Sheave groove misalignment
Power is transmitted from one shaft to another adjacent parallel shaft with - ANSWER ✔✔-Belts and
chains
Created by ©EmilyCharlene 2025. All rights reserved.
