1
Q
Which type of dryer is the most efficient?
A
Refrigerant
2
Q
If you are required to put a bearing on a tapered sleeve what do you require?
A
Taper sleeve adapter
3
Q
What orientation should piston rings be installed?
A
With the dots facing up
4
Q
What is the typical lube system on a large size diesel engine?
A
Forced lubrication
5
Q
Where is the oil release valve located on an impeller housing?
A
At the bottom
6
Q
What is considered a vaccum?
A
Any pressure under atmosphere (14.7)
7
Q
Where is a oil relief valve located on an impeller
A
At the top
8
Q
Absoulte +/- temperature given = _______________
A
Temperature
9
Q
What is the slope for pneumatic airline over 10’
A
1” for every 10’
10
Q
What is relative humidity
A
Amount of moisture in air at a given temperature
11
Q
What is used in hydraulic reservoir to aid fluid cooling?
A
Baffle
12
Q
What are two major classifications of dynamic compressors
A
Axial and radial flow
13
Q
What are the rotating blades in an axial flow compressor attached to?
A
Rotor
14
Q
- When a compressor is relieved of all internal pressure it is said to be:
A
Unloaded
15
Q
- Which valve prevents oil from being forced out the inlet when the compressor is shutdown?
A
Inlet check valve
16
Q
- How many cubic feet of air per minute does one horsepower generate?
A
3.74 CFM
17
Q
- What styles of pump has suction opening larger than the discharge opening?
A
Centrifugal
18
Q
Demulsibility is the ability of a fluid to
A
Separate out water
19
Q
What does it mean for a compressor to have a built in pressure ratio?
A
The pressure ratio is NOT adjustable
20
Q
The purpose of a volute in a pump
A
Increase velocity
21
Q
What will a plugged or blocked inlet line create?
A
Cavitation
22
Q
What is kelvin equal to
A
-273.15
23
Q
What valve prevents oil from being forced out the inlet when the compressor is shutdown
A
Inlet check valve
24
Q
What does rankin equal?
A
-459.73
25
How do you find Celsius from ferinheight?
5/9 x (F - 32)
26
How do you find ferinheight from Celsius?
(9/5 x C ) + 32
27
What order does lubrication, regulators, and filters go?
FRL
28
When installing a “T” in a line what do you need to ensure?
That the “T” is facing up so moisture does not collect
29
What percentage of all problems can be related back to alignment being the root cause?
70%
30
What is the size of a class A shim?
2x2
31
If in your horizontal alignment you get a positive number what direction do you move the equipment?
To the right
32
How do you account for dial bar sag on dial A of cross dialing?
Add DBS To vertical
33
What is a barring Gear?
Lever for moving heavy equipment
34
What is a shuttle valves main focus?
Used for balancing pressure
35
How do you find force?
Pressure x area
36
What is priming a pump?
Purging of any air
37
What is the purpose of insulating lines?
Reduce condensation
38
How should oil be added to a hydraulic system?
Through a filter cart
39
What is the angle of JIC fittings?
37 degrees
40
What is the purpose of pipe hangers?
Reduce pipe strain
Keep the slope correct
41
How many pieces do carbon seals typically come in?
3
42
What type of equipment would NOT have a pre lube system
Emergency equipment
43
Having a built in pressure ratio means what?
NOT adjustable
44
1 bar is equal to what psi?
14.7
45
What is 1 imperial gallon equal to?
277 inches cubed
46
Flow = ?
Pressure = ?
Flow = Speed
Pressure = Force
47
What are the 4 main valve controls?
Closed
Open
Tandem
Floating
48
Where would you always find a relief valve in a pump system?
Directly after the pump
49
What does Viscosity refer to?
Resistance to flow
50
What does Spectrometric mean?
Oil analysis
(Testing oil for foreign matter)
51
What does a manometer measure?
Pressure
52
In which type of pump would you find a crescent shape?
Internal Gear
53
What portion of a square meter represents a micron?
1 / 1,000,000
54
How is the stoke increased on an axial pump?
Increase swashplate angle
55
What pump has the ability through construction to compensate for wear?
Vane pump
56
In terms of operation how are hydraulic pumps classified?
Positive Displacement
57
What is another name for a single screw pump?
Progressive cavity pump
58
Why are filters pleated?
More surface area
59
What are pneumatic compressors designed to do?
Increase pressure of air by reducing its volume
60
What must relief valves be sized to do?
Release the max volume produced by the compressor
61
What is relative humidity based on?
Moisture capabilities at that specific temperature
62
If you are working at an asphalt plant at the end of the day what do you spray your equipment with?
Oil
63
What are the two treatments of stainless steel?
Pickling - removes a thin layer
Passivating - oxide layer forms for corrosive resistance
64
What is bolt bound?
When a bolt runs out of room before aligned
65
What is necking?
Bringing a bolt down to its minimal size
66
What knot is this?
Reef knot
67
What knot is this?
Bowline
68
What knot is this?
Reef knot
69
How do you correct dial bar sag on Dial B?
Subtract DBS to vertical
70
How are pumps sized?
Volume / Time
(displacement)
71
How should oil be stored?
Out of elements and on an angle
72
What safety feature should be installed on all conveyors belts?
E - Stop pull cord
73
What is the MINIMUM area of contact your belt should have with the head pulley?
120 degrees
74
What is the MAXIMUM crown on a head pulley?
1/8” / 1 foot
75
Where will the belt always travel when training it?
To the area is last touches on the roller
76
What are the 3 sections in a belt?
- Top Cover
- Bottom Cover
- Carcass
77
Is belt dressing ever an adequate fix?
No
78
Where does a conveyor belt take the most wear?
At the load point
79
What is the purpose of a snub pulley?
To change the arc of the belt on the head pulley
80
What is the purpose of a bend pulley?
To change the direction of travel
81
What is the angle of Repose?
How steep you can stack your material
82
What direction should a conveyor splice be?
It should run so as not to lead into the direction of the load
83
What is a “Patch Test”
Removing a “patch” (section) of a filter to send off for analysis
84
Define a fluid
Any gas or liquid that transmits power
85
Where do you track a bucket elevator?
At the bottom going towards the head drive
86
What chain is typically found on chain conveyors?
H chain
87
Where does a thrust bearing go on a screw conveyor?
Bottom of the load
(Loading end)
88
What device is engineered as a breaking point on a system?
Shear pin
89
How many rollers do you need supporting a load?
MINIMUM 3
90
What type of rollers do you use on curves/bends?
Tapered to maintain load orientation
91
Which side of a fan has high pressure?
Discharge (outlet)
92
What is another term for negative pressure?
Vacuum
93
What type of material can an air slide conveyor be used for?
Light and dry
94
If you want to remove 1 pitch of a chain what do you remove?
One full set (1 inner link and 1 outer link per side)
95
Why should you taper the leading edge when splicing a conveyor belt?
To prevent hooking/tearing of the belt
Millwright Red Seal Condenced Study Cards
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Decks in class (8)
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