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
1
,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 re-
quired
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: - AN-
SWER aluminum oxide
2
,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
3
, 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 mate-
rial 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
4
- 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
1
,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 re-
quired
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: - AN-
SWER aluminum oxide
2
,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
3
, 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 mate-
rial 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
4
