Millwright Level 1 UPDATED Exam
Questions and CORRECT Answers
On a pedestal grinder, the gap between the grinding wheel and work rest should not exceed: -
Correct Answer- 1/8 inch
The kind of abrasive material used in grinding wheels for general purpose applications is: -
Correct Answer- aluminum oxide
A blotter is used on a grinding wheel to: - Correct Answer- protect the flanges from the
abrasize grit, display information about the wheel and compensate for the uneven surfaces on
the wheel
Flanges should at least be: - Correct Answer- 1/3 the diameter of the wheel
The best wheel to use for cleaning scale and dirt off a workpiece is the: - Correct Answer-
wire wheel
What is a natural abrasive? - Correct Answer- made of natural material rather than synthetic
Under properties of abrasives, to what does the term hardness refer? - Correct Answer- ability
of a material to scratch or penetrate another material
The ____ is the part of the wheel that holds the grains together - Correct Answer- bond
Markings for the wheel identification can be found on the _______ - Correct Answer- Blotter
What is the recommended speed to run a grinding wheel? - Correct Answer- Never run it
faster that the max RPM of the grinding wheel
How should you start a grinder? - Correct Answer- Stand off to the side and wait a full
minute
,Is 46 or 60 the coarser grit? - Correct Answer- 46
What are the 2 most commonly used abrasive materials? - Correct Answer- Aluminum oxide
and silicone carbide
For what purpose is the diamond dresser used? - Correct Answer- When a very fine finish is
required
What is the purpose of ring test? - Correct Answer- to check for cracks
If a grinding wheel makes a ringing sound what does that mean? - Correct Answer- wheel is
not cracked
What is the purpose of truing a grinding wheel? - Correct Answer- Restores the shape of the
wheel and makes the outer surface of the wheel concentric with its bore
An out of balance wheel: - Correct Answer- vibrates
Belt grinders are useful for: - Correct Answer- quickly deburring and chamfering a workpiece
What is the purpose of a GFCI? - Correct Answer- Senses drop in current and switches power
off
The kind of abrasive material use in grinding wheels for general purpose application is: -
Correct Answer- aluminum oxide
Is it safe to carry a portable grinder by the power cord? - Correct Answer- False
Is it safe to use standard sockets with electric impact wrenches - Correct Answer- False
The larger the power drill, the slower the RPMs and the higher the torque - Correct Answer-
True
, Can you use conventional drill bits with a hammer drill? Why or why not? - Correct Answer-
Yes of the hammer drill has a switch to turn off hammer action
Most cordless drills have torque control - Correct Answer- True
Prolonged use of power or air tools can cause carpal tunnel sydrome - Correct Answer- True
Is it safe to run an impact wrench with a universal joint and socket attached - Correct Answer-
No because it may throw off attachments
What conditions would you use a GFCI - Correct Answer- Wet conditions
What 3 things does a GFCI protect: - Correct Answer- 1. Overload 2. Overcurrent 3. Ground
fault protection
A GFCI prevents all electrical shocks - Correct Answer- False
Higher voltage on a battery means: - Correct Answer- Greater power of tool
What type of power load must be used in the low velocity tool? Why? - Correct Answer-
Power load with a crimped end must be used cause high power load would get lodged in the
tool
6 colours ranging from lowest strength to highest strength for power load are: - Correct
Answer- 1. Grey 2. Brown 3. Green 4. Yellow 5. Red 6. Purple
Power loads should not be carried loosely in pockets or aprons. Why? - Correct Answer-
Could be set off causing serious injury or death
Fasteners used in explosive actuated tools are: - Correct Answer- Manufactured from special
steel and tempered
Questions and CORRECT Answers
On a pedestal grinder, the gap between the grinding wheel and work rest should not exceed: -
Correct Answer- 1/8 inch
The kind of abrasive material used in grinding wheels for general purpose applications is: -
Correct Answer- aluminum oxide
A blotter is used on a grinding wheel to: - Correct Answer- protect the flanges from the
abrasize grit, display information about the wheel and compensate for the uneven surfaces on
the wheel
Flanges should at least be: - Correct Answer- 1/3 the diameter of the wheel
The best wheel to use for cleaning scale and dirt off a workpiece is the: - Correct Answer-
wire wheel
What is a natural abrasive? - Correct Answer- made of natural material rather than synthetic
Under properties of abrasives, to what does the term hardness refer? - Correct Answer- ability
of a material to scratch or penetrate another material
The ____ is the part of the wheel that holds the grains together - Correct Answer- bond
Markings for the wheel identification can be found on the _______ - Correct Answer- Blotter
What is the recommended speed to run a grinding wheel? - Correct Answer- Never run it
faster that the max RPM of the grinding wheel
How should you start a grinder? - Correct Answer- Stand off to the side and wait a full
minute
,Is 46 or 60 the coarser grit? - Correct Answer- 46
What are the 2 most commonly used abrasive materials? - Correct Answer- Aluminum oxide
and silicone carbide
For what purpose is the diamond dresser used? - Correct Answer- When a very fine finish is
required
What is the purpose of ring test? - Correct Answer- to check for cracks
If a grinding wheel makes a ringing sound what does that mean? - Correct Answer- wheel is
not cracked
What is the purpose of truing a grinding wheel? - Correct Answer- Restores the shape of the
wheel and makes the outer surface of the wheel concentric with its bore
An out of balance wheel: - Correct Answer- vibrates
Belt grinders are useful for: - Correct Answer- quickly deburring and chamfering a workpiece
What is the purpose of a GFCI? - Correct Answer- Senses drop in current and switches power
off
The kind of abrasive material use in grinding wheels for general purpose application is: -
Correct Answer- aluminum oxide
Is it safe to carry a portable grinder by the power cord? - Correct Answer- False
Is it safe to use standard sockets with electric impact wrenches - Correct Answer- False
The larger the power drill, the slower the RPMs and the higher the torque - Correct Answer-
True
, Can you use conventional drill bits with a hammer drill? Why or why not? - Correct Answer-
Yes of the hammer drill has a switch to turn off hammer action
Most cordless drills have torque control - Correct Answer- True
Prolonged use of power or air tools can cause carpal tunnel sydrome - Correct Answer- True
Is it safe to run an impact wrench with a universal joint and socket attached - Correct Answer-
No because it may throw off attachments
What conditions would you use a GFCI - Correct Answer- Wet conditions
What 3 things does a GFCI protect: - Correct Answer- 1. Overload 2. Overcurrent 3. Ground
fault protection
A GFCI prevents all electrical shocks - Correct Answer- False
Higher voltage on a battery means: - Correct Answer- Greater power of tool
What type of power load must be used in the low velocity tool? Why? - Correct Answer-
Power load with a crimped end must be used cause high power load would get lodged in the
tool
6 colours ranging from lowest strength to highest strength for power load are: - Correct
Answer- 1. Grey 2. Brown 3. Green 4. Yellow 5. Red 6. Purple
Power loads should not be carried loosely in pockets or aprons. Why? - Correct Answer-
Could be set off causing serious injury or death
Fasteners used in explosive actuated tools are: - Correct Answer- Manufactured from special
steel and tempered
