MILLWRIGHT LEVEL 1,LEVEL 2 AND LEVEL 3 FINAL EXAM NEWEST ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
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MILLWRIGHT LEVEL 3 PNEUMATICS FINAL EXAM
NEWEST 2024-2025 ACTUAL EXAM COMPLETE 100
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
what are common desiccants? – ANSWER- activated alumina,
granular and bead type silica gel, and molecular sieves.
what are the four categories of air dryers? – ANSWERabsorption
adsorption
refrigeration
mechanical
when working on a dryer system what must you do before
performing maitenance? – ANSWER- depressurize and isolate
the complete system.
Define regeneration(reactivation) in gas and air dryer systems. –
ANSWER- term used for the process of removing the
accumulation of moisture from the dryer bed.
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what percent of dry air is used to regenerate a dryer bed? –
ANSWER- 10-15%
Describe the operation of an absorption dryer – ANSWERabsorption dryers use a chemical bond between the drying agent
and the gas stream being dried. Its different from a adsorption
dryer in that there is no film foundation. moisture is absorbed by
the absorption material and forms a solution.
Describe a chemical dryer also known as a solid dehydration
dryer. – ANSWER- this type of dryer cannot be regenerated,
must use deliquescents, which slowly dissolve or melt away as
they combine with the moisture they are absorbing, because of
this the bed must be replenished periodically because the
deliquescent is consumed by the drying process.
Describe liquid Dehydration – ANSWER- an absorbing
agent(ethylene glycol) is used to remove moisture, gas is
brought into contact with agent being sprayed through nozzels.
Describe Refrigeration dryers. – ANSWER- least expensive
method of dew point reduction, this is because there are no
absorption or absorption materials that require maintenace or
replacement. by cooling air in an aftercooler the air is less able
to hold moisture, so water can drop out of the stream and be
removed.
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In a Refrigerant circuit in a refrigeration dryer what happens to
the water? – ANSWER- because water freezes at 0C(32F) the
condensed water would freeze in this dryer if the controls were
set too cool the air too much. This type of dryer is capable of
lowering the dew point to 2 to 3 degrees celcius. lower temps
would cause it to freeze.
Describe Mechanical dryers. – ANSWER- use only mechanical,
physical means to cause moisture to fall out of the air stream.
these include devices that use intertia or mechanical
components, such as barriers and filters.
Define Liquid seperators – ANSWER- air enters a large vessel,
the reduction in velocity by the size of the dryer and the baffles
inside allows contaminants such as sand,oil,acids and other
liquids to slow down and drop to the bottom of the vessel where
they can be removed
Define a Centrifugal Separators – ANSWER- found downstream
of compressor aftercoolers the centrifugal separator uses
centrifugal force to throw incoming air or gas outwards causing
the heavy particles to drop to the bottom and be removed.
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MILLWRIGHT LEVEL 2 FINAL EXAM NEWEST 2024-
2025 ACTUAL EXAM COMPLETE 100 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Describe how thrust is controlled with plain bearings for both
low and high speed applications. – ANSWER- Oil wedges.
Describe radial and axial load. – ANSWER- Radial is horizontal
load, axial is vertical.
Describe the basic design of Kingsbury bearings. – ANSWERFaces have a minor pivoted shoes and oil is injected to so during
operation the shaft is centered in clearance accurately.
What styles do kingsbury bearings come in? (2 points) –
ANSWER- Fixed pad and floating or tilting pads.
What are the merits of anit-friction bearings? – ANSWER- A lot
less friction occurring. Less energy, less heat.
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List the main parts of anti-friction bearings? (3 points) –
ANSWER- 2 hardened steel rings, the hardened balls or rollers
(rolling elements) and the separator.
Describe the operating principle of ball bushings. – ANSWERGuide rails/shafts using recirculating ball bushings.
List the three styles of rolling elements. – ANSWER- Ball,
Roller and needles
Describe the applications for open bearings, shielded bearings,
sealed bearings and sealed and shielded bearings. – ANSWEROpen bearings – oil bath or open lubrication
Shielded bearings- keep out solid contaminates
Sealed – Keeps out solid contaminates and liquid contaminants.
How are directions of bearing loads expressed? – ANSWERRadial and thrust and combination
What are the normal speed ranges for ball bearings and roller
bearings? – ANSWER- Ball – 40,000 rpm
Rolling – 2000-20,000 rpm
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How are bearings classified according to their service use? –
ANSWER- Type, Service Weight, Bore size. (X, X, XX)
What measurements are matched to the code markings on a
bearing? – ANSWER- Last two numbers correspond with bore
diameter. (00-10mm, 01-12mm, 02-15mm, 03-17mm) Above
20mm multiply last two digits by 5. Above 480mm, size is
directly placed in
Briefly describe:
a) non-separable bearings
b)separable bearings
c)non-aligning bearings
d)self aligning bearings – ANSWER- a)Non-sperable – designed
in single peice
b)Separable- Can pull bearing, consist of either 2 or 3 separable
parts
c)non-aligning – used in machines where the bearings are held in
alignment by the bores of the housing
d)self-aligning – may be internal or external. outer race is more
concave to allow for pivot.
Define the following bearing codes:
a) SKF06106
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MILLWRIGHT LEVEL 1 FINAL EXAM NEWEST 2024-
2025 ACTUAL EXAM COMPLETE 300 QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
What are the limitations of a horizontal band saw as it relates to
cutting curves or round corners? – ANSWER- It can only cut
straight
How is feed rate controlled on a horizontal band saw? –
ANSWER- An adjustable hydraulic cylinder
IS it necessary to turn a horizontal band saw off manually after
completing a cutting operation? Why or Why not? – ANSWERNo because a switch is automatically activated by the downward
motion of the upper frame
What re the saw guides and where should you place them when
you are using a horizontal band saw? – ANSWER- They guide
the blade and should be adjusted to as close as possible to the
work
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If the blade jumps and shudders when you are using a horizontal
band saw, what could be the problem? – ANSWER- The feed
rate is too high
When cutting short pieces to length, what can be done to ensure
that the jaws of the clamping device make good contact and do
not distort – ANSWER- Placing a similar piece in the back
What is another name for a contour band saw? – ANSWERVertical band saw
What is tracking as it relates to band saw? – ANSWERCentering the blade on the pulleys
What characteristics differentiate styles of band saw blades? –
ANSWER- Material, width, gauge, pitch, type of tooth
What is the advantage of using a bimetal blade in a band saw? –
ANSWER- Greater wear and heat resistance, faster cutting and
better durability
Where should you place the weld when you are welding band
saw blades? – ANSWER- Bottom of a tooth gullet
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The width of the saw blade cut in the workpiece is called: –
ANSWER- kerf
The purpose of draw filing is to: – ANSWER- produces a
smooth and flat surface
The removable serrated jaws on a bench vise made from: –
ANSWER- aluminum
How do you designate the size of a bench vise? – ANSWERWidth of jaws
A standard screwdriver blade maintains a better grip in the slot
if the blade is ground slightly: – ANSWER- Concave
The included angle that should be ground of the point of a center
punch is: – ANSWER- 90 degrees
When tightening a bolt with a wrench: – ANSWER- Never push:
always pull
The reason for the crown on the end of a flat scraper is: –
ANSWER- so that the outside edges do not dig into the finished
workpiece
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What is a purpose of a flat (cold) chisel? – ANSWER- cutting
off rivets
What is a chisel made from? – ANSWER- high carbon steel
What are 2 types of cleaning? – ANSWER- 1. Chemical 2.
Mechanical
Alkaline cleaning must only be used on what metal? –
ANSWER- Iron
Barrel finishing: – ANSWER- IS a quick and inexpensive
cleaning method
In the lapping process, what is charged? – ANSWER- the lap
What is another name for Hand Pads or Rolls? – ANSWERScotch-Brite pads
The 3 hand taps found in a set are the: – ANSWER- Taper, plug
and bottoming
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