NCCER MILLWRIGHT EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
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
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
Which set of tools should be used to align a motor to a pump? - Answer-Dial indicator,
straight edge
The position of the lantern ring should be carefully noted when which of the following is
removed? - Answer-Shaft packing
Reciprocating compressors are - Answer-Positive displacement
The job calls for rigid couplings to be used. The alignment between driver and driven
shafts must be - Answer-Precise
Radial bearings are mounted on the impeller shaft to prevent - Answer-Perpendicular
movement of the shaft when the pump is running
Too great of a compression ration may cause excessive - Answer-Discharge
temperature
Screw conveyors are normally enclosed in - Answer-Tubes
WITH COMPLETE SOLUTIONS
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
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
Which set of tools should be used to align a motor to a pump? - Answer-Dial indicator,
straight edge
The position of the lantern ring should be carefully noted when which of the following is
removed? - Answer-Shaft packing
Reciprocating compressors are - Answer-Positive displacement
The job calls for rigid couplings to be used. The alignment between driver and driven
shafts must be - Answer-Precise
Radial bearings are mounted on the impeller shaft to prevent - Answer-Perpendicular
movement of the shaft when the pump is running
Too great of a compression ration may cause excessive - Answer-Discharge
temperature
Screw conveyors are normally enclosed in - Answer-Tubes
