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