Millwright Level 1 Final Questions &
Answers (Graded A)
On a pedestal grinder, the gap between the grinding wheel and work rest should not
exceed: - ANSWER-1/8 inch
The kind of abrasive material used in grinding wheels for general purpose applications
is: - ANSWER-aluminum oxide
A blotter is used on a grinding wheel to: - 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: - ANSWER-1/3 the diameter of the wheel
The best wheel to use for cleaning scale and dirt off a workpiece is the: - ANSWER-wire
wheel
What is a natural abrasive? - ANSWER-made of natural material rather than synthetic
Under properties of abrasives, to what does the term hardness refer? - ANSWER-ability
of a material to scratch or penetrate another material
The ____ is the part of the wheel that holds the grains together - ANSWER-bond
Markings for the wheel identification can be found on the _______ - ANSWER-Blotter
What is the recommended speed to run a grinding wheel? - ANSWER-Never run it
faster that the max RPM of the grinding wheel
How should you start a grinder? - ANSWER-Stand off to the side and wait a full minute
Is 46 or 60 the coarser grit? - ANSWER-46
What are the 2 most commonly used abrasive materials? - ANSWER-Aluminum oxide
and silicone carbide
For what purpose is the diamond dresser used? - ANSWER-When a very fine finish is
required
What is the purpose of ring test? - ANSWER-to check for cracks
,If a grinding wheel makes a ringing sound what does that mean? - ANSWER-wheel is
not cracked
What is the purpose of truing a grinding wheel? - ANSWER-Restores the shape of the
wheel and makes the outer surface of the wheel concentric with its bore
An out of balance wheel: - ANSWER-vibrates
Belt grinders are useful for: - ANSWER-quickly deburring and chamfering a workpiece
What is the purpose of a GFCI? - ANSWER-Senses drop in current and switches power
off
The kind of abrasive material use in grinding wheels for general purpose application is: -
ANSWER-aluminum oxide
Is it safe to carry a portable grinder by the power cord? - ANSWER-False
Is it safe to use standard sockets with electric impact wrenches - ANSWER-False
The larger the power drill, the slower the RPMs and the higher the torque - ANSWER-
True
Can you use conventional drill bits with a hammer drill? Why or why not? - ANSWER-
Yes of the hammer drill has a switch to turn off hammer action
Most cordless drills have torque control - ANSWER-True
Prolonged use of power or air tools can cause carpal tunnel sydrome - ANSWER-True
Is it safe to run an impact wrench with a universal joint and socket attached - ANSWER-
No because it may throw off attachments
What conditions would you use a GFCI - ANSWER-Wet conditions
What 3 things does a GFCI protect: - ANSWER-1. Overload 2. Overcurrent 3. Ground
fault protection
A GFCI prevents all electrical shocks - ANSWER-False
Higher voltage on a battery means: - ANSWER-Greater power of tool
What type of power load must be used in the low velocity tool? Why? - 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: -
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? - ANSWER-
Could be set off causing serious injury or death
Fasteners used in explosive actuated tools are: - ANSWER-Manufactured from special
steel and tempered
A drive pin is a fastener used to: - ANSWER-Permanently attach one material to
another
What is base material? - ANSWER-Material which the fastener shank is driven into
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the fastener is blunted ( meaning it can't
fasten) the material is too: - ANSWER-Hard
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the fastener penetrates easily, do not fasten
because the material is too: - ANSWER-Soft
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the material cracks or shatters, do not
fasten because the material is too: - ANSWER-Brittle
A threaded knurled pin is designed for what material - ANSWER-Mild steel
To be a qualified operator of an explosive actuated tool you must posses: - ANSWER-
training in the use of each tool and familiarity with local safety regulations
OH&S states that operators of explosive actuate tools should always wear: - ANSWER-
Eye protection
If a tool is found to be defective, you should: - ANSWER-Mark it defective and call a
service representative
According to OH&S, what safety equipment is required when using an explosive actuate
tool in a confined area such as a small room? - ANSWER-ear plugs and eye protection
Who is responsible if an accident occurs as a result of an unattended explosive
actuated tool? - ANSWER-The operator
Should an explosive actuated tool be used in explosive or flammable area? - ANSWER-
No
Answers (Graded A)
On a pedestal grinder, the gap between the grinding wheel and work rest should not
exceed: - ANSWER-1/8 inch
The kind of abrasive material used in grinding wheels for general purpose applications
is: - ANSWER-aluminum oxide
A blotter is used on a grinding wheel to: - 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: - ANSWER-1/3 the diameter of the wheel
The best wheel to use for cleaning scale and dirt off a workpiece is the: - ANSWER-wire
wheel
What is a natural abrasive? - ANSWER-made of natural material rather than synthetic
Under properties of abrasives, to what does the term hardness refer? - ANSWER-ability
of a material to scratch or penetrate another material
The ____ is the part of the wheel that holds the grains together - ANSWER-bond
Markings for the wheel identification can be found on the _______ - ANSWER-Blotter
What is the recommended speed to run a grinding wheel? - ANSWER-Never run it
faster that the max RPM of the grinding wheel
How should you start a grinder? - ANSWER-Stand off to the side and wait a full minute
Is 46 or 60 the coarser grit? - ANSWER-46
What are the 2 most commonly used abrasive materials? - ANSWER-Aluminum oxide
and silicone carbide
For what purpose is the diamond dresser used? - ANSWER-When a very fine finish is
required
What is the purpose of ring test? - ANSWER-to check for cracks
,If a grinding wheel makes a ringing sound what does that mean? - ANSWER-wheel is
not cracked
What is the purpose of truing a grinding wheel? - ANSWER-Restores the shape of the
wheel and makes the outer surface of the wheel concentric with its bore
An out of balance wheel: - ANSWER-vibrates
Belt grinders are useful for: - ANSWER-quickly deburring and chamfering a workpiece
What is the purpose of a GFCI? - ANSWER-Senses drop in current and switches power
off
The kind of abrasive material use in grinding wheels for general purpose application is: -
ANSWER-aluminum oxide
Is it safe to carry a portable grinder by the power cord? - ANSWER-False
Is it safe to use standard sockets with electric impact wrenches - ANSWER-False
The larger the power drill, the slower the RPMs and the higher the torque - ANSWER-
True
Can you use conventional drill bits with a hammer drill? Why or why not? - ANSWER-
Yes of the hammer drill has a switch to turn off hammer action
Most cordless drills have torque control - ANSWER-True
Prolonged use of power or air tools can cause carpal tunnel sydrome - ANSWER-True
Is it safe to run an impact wrench with a universal joint and socket attached - ANSWER-
No because it may throw off attachments
What conditions would you use a GFCI - ANSWER-Wet conditions
What 3 things does a GFCI protect: - ANSWER-1. Overload 2. Overcurrent 3. Ground
fault protection
A GFCI prevents all electrical shocks - ANSWER-False
Higher voltage on a battery means: - ANSWER-Greater power of tool
What type of power load must be used in the low velocity tool? Why? - 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: -
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? - ANSWER-
Could be set off causing serious injury or death
Fasteners used in explosive actuated tools are: - ANSWER-Manufactured from special
steel and tempered
A drive pin is a fastener used to: - ANSWER-Permanently attach one material to
another
What is base material? - ANSWER-Material which the fastener shank is driven into
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the fastener is blunted ( meaning it can't
fasten) the material is too: - ANSWER-Hard
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the fastener penetrates easily, do not fasten
because the material is too: - ANSWER-Soft
To determine the sustainability of a base material, use a fastener as a centre punch
struck by a single average hammer blow. If the material cracks or shatters, do not
fasten because the material is too: - ANSWER-Brittle
A threaded knurled pin is designed for what material - ANSWER-Mild steel
To be a qualified operator of an explosive actuated tool you must posses: - ANSWER-
training in the use of each tool and familiarity with local safety regulations
OH&S states that operators of explosive actuate tools should always wear: - ANSWER-
Eye protection
If a tool is found to be defective, you should: - ANSWER-Mark it defective and call a
service representative
According to OH&S, what safety equipment is required when using an explosive actuate
tool in a confined area such as a small room? - ANSWER-ear plugs and eye protection
Who is responsible if an accident occurs as a result of an unattended explosive
actuated tool? - ANSWER-The operator
Should an explosive actuated tool be used in explosive or flammable area? - ANSWER-
No
