INDUSTRIAL MAINTENANCE CORE EXAM TEST QUESTIONS
AND SOLUTIONS RATED A+
✔✔Grinder accessories - ✔✔When selecting a grinding wheel for a given job, two
factors must be considered. wheel must be suited to the material being ground, and the
maxi- mum rotational speed of the wheel must be rated higher than the rotational speed
of the grinder. correct wheel can be identified by referring to the manufacturer code
stamped or printed on the wheel.
✔✔Safty warning grinding - ✔✔Always grind with the direction of the bevel and position
the wheel to the bevel, so that if it kicks off, it will kick off from you.
✔✔PIPE THREADING MACHINES - ✔✔multipurpose power tools that center, hold, and
rotate pipe, conduit, or bolt stock while cutting, reaming, and threading operations are
performed.
✔✔Correct threads - ✔✔If the threads are correct, you should be able to screw a fitting
three and a half revolu- tions by hand onto the new threads.
✔✔Thread classes - ✔✔Classes each 3A other and by 3B the allow degrees of
minimum tolerance distinguished clearance and permitted.
✔✔Nominal size - ✔✔Approximate diameter of the fastener.
✔✔buttress thread - ✔✔One side of the thread cut square and the other cut at a slant. It
has great strength along the thread axis in one direction only. This thread form is used
to screw thin tubular parts together
✔✔Grade markings - ✔✔Generally, the higher-quality steel fasteners have a greater
number of marks on the head.
✔✔Cap Screws - ✔✔____ screws often used on high-quality assemblies requiring a
finished appearance.
✔✔Set screws - ✔✔Heat-treated steel is normally used to make
✔✔Jam nuts - ✔✔___ nut is used to lock a standard nut in place
✔✔Self locking - ✔✔____ nuts are designed with nylon inserts
✔✔External washers - ✔✔____ washers used for the greatest resistance
✔✔Woodruff key- - ✔✔Semicircular shape that fits into a keyseat of the same shape.
The top of the key fits into the keyway of the mating part.
, ✔✔Taper and Spring Pins - ✔✔used to fasten gears Taper ulleys, and collars to a shaft.
✔✔Cotter pins - ✔✔They are also used to keep slotted nuts from working loose
✔✔Thread inserts - ✔✔Also called heli-coils
✔✔Thread inserts - ✔✔Used to replace damage or stripped threads in a tapered hole
✔✔Double-Expansion Anchors - ✔✔used mainly when fastening into concrete or
masonry of question- able strength.
✔✔Protective clothing - ✔✔Wear 8-inch or taller high-top safety shoes or boots.
✔✔Ear Protection - ✔✔For maximum protection, earmuff-type hearing protectors
✔✔Protective equiptment - ✔✔For oxyfuel welding and cutting, wear tinted 4 to shield.
shield. 6) over Clear safety welding (shades face glasses,and goggles wear a clear face
sheild
✔✔Oxygen - ✔✔Combined with burn- ing material, pure ____ causes a fire to flare and
burn out of control.
✔✔Oxygen Cylinders - ✔✔Oxygen is stored at more than 2,000 pounds per square inch
(psi) in hollow steel cylinders.
✔✔Oxygen Cylinders - ✔✔largest ultra-high-pressure cylinder holds about 485 cubic
feet. The most common size oxy- cylinder used for welding and cutting opera- tions is
the 227 cubic foot cylinder.
✔✔Oxygen cylinders - ✔✔The shoulder of the oxygen cylinder has the name of the gas
and/or the supplier stamped, labeled, or stenciled on it.
✔✔Acetylene - ✔✔When combined with oxygen, flame that burns hotter than 5,500°F,
one of the acetylene creates the hottest gas flames.
✔✔Acetylene Cylinders - ✔✔If the cylinder is tipped over, stand the cylin- der upright
and wait at least 30 minutes before using it.
✔✔Acetylene Cylinders - ✔✔have safty fuse plugs in the too and bottom of the cylinder
that melt at 220
✔✔Liquefied fuel gases - ✔✔Methylacetylene propadiene,MAPP, propane
AND SOLUTIONS RATED A+
✔✔Grinder accessories - ✔✔When selecting a grinding wheel for a given job, two
factors must be considered. wheel must be suited to the material being ground, and the
maxi- mum rotational speed of the wheel must be rated higher than the rotational speed
of the grinder. correct wheel can be identified by referring to the manufacturer code
stamped or printed on the wheel.
✔✔Safty warning grinding - ✔✔Always grind with the direction of the bevel and position
the wheel to the bevel, so that if it kicks off, it will kick off from you.
✔✔PIPE THREADING MACHINES - ✔✔multipurpose power tools that center, hold, and
rotate pipe, conduit, or bolt stock while cutting, reaming, and threading operations are
performed.
✔✔Correct threads - ✔✔If the threads are correct, you should be able to screw a fitting
three and a half revolu- tions by hand onto the new threads.
✔✔Thread classes - ✔✔Classes each 3A other and by 3B the allow degrees of
minimum tolerance distinguished clearance and permitted.
✔✔Nominal size - ✔✔Approximate diameter of the fastener.
✔✔buttress thread - ✔✔One side of the thread cut square and the other cut at a slant. It
has great strength along the thread axis in one direction only. This thread form is used
to screw thin tubular parts together
✔✔Grade markings - ✔✔Generally, the higher-quality steel fasteners have a greater
number of marks on the head.
✔✔Cap Screws - ✔✔____ screws often used on high-quality assemblies requiring a
finished appearance.
✔✔Set screws - ✔✔Heat-treated steel is normally used to make
✔✔Jam nuts - ✔✔___ nut is used to lock a standard nut in place
✔✔Self locking - ✔✔____ nuts are designed with nylon inserts
✔✔External washers - ✔✔____ washers used for the greatest resistance
✔✔Woodruff key- - ✔✔Semicircular shape that fits into a keyseat of the same shape.
The top of the key fits into the keyway of the mating part.
, ✔✔Taper and Spring Pins - ✔✔used to fasten gears Taper ulleys, and collars to a shaft.
✔✔Cotter pins - ✔✔They are also used to keep slotted nuts from working loose
✔✔Thread inserts - ✔✔Also called heli-coils
✔✔Thread inserts - ✔✔Used to replace damage or stripped threads in a tapered hole
✔✔Double-Expansion Anchors - ✔✔used mainly when fastening into concrete or
masonry of question- able strength.
✔✔Protective clothing - ✔✔Wear 8-inch or taller high-top safety shoes or boots.
✔✔Ear Protection - ✔✔For maximum protection, earmuff-type hearing protectors
✔✔Protective equiptment - ✔✔For oxyfuel welding and cutting, wear tinted 4 to shield.
shield. 6) over Clear safety welding (shades face glasses,and goggles wear a clear face
sheild
✔✔Oxygen - ✔✔Combined with burn- ing material, pure ____ causes a fire to flare and
burn out of control.
✔✔Oxygen Cylinders - ✔✔Oxygen is stored at more than 2,000 pounds per square inch
(psi) in hollow steel cylinders.
✔✔Oxygen Cylinders - ✔✔largest ultra-high-pressure cylinder holds about 485 cubic
feet. The most common size oxy- cylinder used for welding and cutting opera- tions is
the 227 cubic foot cylinder.
✔✔Oxygen cylinders - ✔✔The shoulder of the oxygen cylinder has the name of the gas
and/or the supplier stamped, labeled, or stenciled on it.
✔✔Acetylene - ✔✔When combined with oxygen, flame that burns hotter than 5,500°F,
one of the acetylene creates the hottest gas flames.
✔✔Acetylene Cylinders - ✔✔If the cylinder is tipped over, stand the cylin- der upright
and wait at least 30 minutes before using it.
✔✔Acetylene Cylinders - ✔✔have safty fuse plugs in the too and bottom of the cylinder
that melt at 220
✔✔Liquefied fuel gases - ✔✔Methylacetylene propadiene,MAPP, propane
