stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
ER 29-42 Flashcards | StudBud
Explore
/
ER 29-42
ER 29-42
169 terms
·
StudBud Administration
·
1 play
Imported from external platform
Flashcards
169 cards
F
Practice quiz
P
Host live
L
Questions
169
Answers
1
The three functions of brakes are __________
Stopping, slowing, and holding
shotgun
Turning, accelerating, and shifting
Vibrating, pulsing, and oscillating
2
you have a partial blockage at the lubricator,what is one easy check you can do before taking the lubricator unit apart?
Blow compressed air through the line
Check the input and output pressures for a significant difference
Check to make sure the oil level is not too high
Look for kinks in the air lines
3
Only regular eyebolts should be installed using hand tightening.
True
False
4
True or False: the idle wheel should ALWAYS be mounted against the tension side of the belt.
False
True
5
True or false: Component substitution is often slower than other tests.
False
True
6
The graphic shows an example of a(n) __________.
QD bushed sheave
Multiple belt sheave
Taper lock bushing
Split taper bushing
7
The taper lock bushing has __________.
A threaded hole that must be aligned with a threaded hole in the hub
Three (3) unthreaded semi-circular holes
A flange similar to the QD bushing
Semi-circular holes that match with semi-circular holes in the hub
8
The __________ should be checked across the ports of the motor if a blocked port is suspected.
Pressure differential
Vacuum
Flow
Total pressure
9
What tool should never be used to hammer on any piece of rigging?
Rubber mallet
Metal hammer
Leather hammer
None of the above
10
A steel rule can be used to check for __________ on a solenoid.
Magnetism
The correct gap
Alignment
Correct size
11
What type of protective clothing best protects against falling objects?
Body protection
Eye protection
Head protection
Face protection
12
A blown shaft seal on a hydraulic motor is usually the result of __________.
A blocked case drain line
Excessive flow from the pump
High system pressure
External contamination
13
Flowcharts are based on which troubleshooting method?
Half-split
Shotgun
Symptom and cause
- Output-back
14
Which of the following is the most common method used to find the center of gravity for an asymmetrical load?
Model method
Weight and lever arm method
Swing method
Trial and error method
15
What is the normal operating temperature for petroleum-based hydraulic fluid?
105 °F (41 °C)
125 °F (52 °C)
135 °F (57 °C)
115 °F (46 °C)
16
True or false: NC vacuum switches are more common than NO vacuum switches.
True
False
17
Current going to an electrically operated motor brake ___
Stops the motor
Adjust the drag
Releases it
Allow the motor to stop the load smoothly
18
Which of the following is a typical location that a test point tee is installed in hydraulic lines?
None of the above
Somewhere between the components
Both of the above
Directly to a port or valve on a component
19
Which of the vacuum cup failure symptoms involves a small crack or hole in the cup?
Loss of seal
No seal
None of the above
Excessive force
20
True or false: A common way to test for pump overheating is to touch the pump.
False
True
21
Which of the following is a function of a regulator?
To control the air that is allowed to flow into the system
In case of venting regulators, to vent excess pressure to the atmosphere
All of the above
To control pressure
22
All wire rope in continuous service should be visually inspected __________
Monthly
Yearly
Before each use
Weekly
23
In rigging, a hoist typically lifts the load by __________ a chain or rope around a drum or pulley.
Winding
Leveraging
Pushing
Reeving
24
Which type of pneumatic system fault is a malfunction in the machine's operation steps?
Machine performance faults
Machine sequence faults
None of the above
System fault
25
Electromagnetic brake actuators use __________ to engage the brake and __________ to disengage the brake shoes.
Hydraulics, DC magnets
DC magnets, springs
Springs, DC magnets
DC magnets, hydraulics
26
A complete lockout/tagout program requires that __________ be locked out for servicing or maintenance.
Only electrical power
Only pneumatic power
Only mechanical components
All power sources
27
Overload clutches protect the drive motor and equipment when _
The motor overheats
Power is interrupted while the motor is energized
Something jams or binds in the machinery
Spring pressure on the friction facings is reduced
28
Training flowcharts combine which two troubleshooting methods?
Half-split and shotgun
Shotgun and symptom and cause
Symptom and cause and half-split
Output-back and shotgun
29
When hitching a load, where are the ideal attachment points?
On the same plane as the center of gravity
Below the center of gravity
One point above and one point below the center of gravity
Higher than the center of gravity
30
Why would a digital indicator be preferred over a dial indicator in automation applications?
faster
easier to read
more accurate
Readings can be electronically transmitted to a controller
31
What is the preferred material for mousing?
Stainless steel safety wire
Cable ties
Twine
Rope
32
A V-belt should ride ____in the groove with its top near the top of the sheave, and does not touch the __of the sheave.
High; bottom
Low; sides
High; top
Low; bottom
33
If crazing occurs dueto extreme temperatures or incompatible oil,what is the correct course of action regarding the bowl
Change bowls to another material or use a metal bowl
Do nothing, the bowl is fine
Change the bowl each time it crazes
Change the oil regardless of OEM recommendations
34
What is the purpose of a tag line?
To avoid sharp bends in slings
To prevent damage to the load's surface
To prevent loads from rotating or spinning
To protect the load and the slings
35
According to the Vacuum Cup Troubleshooting Chart what should you check if you are experiencing noisy operation?
Wrist pin bearings
Venturi nozzle vane
Vacuum generator mounting bolts
Loose muffler
36
Which method of fluid flow measurement involves adding a load valve?
Measurement of flow to actuator
Bypass flow measurement
Inline flow measurement
Case drain flow measurement
37
Mechanically, a __________ is the possible cause of cylinder drift.
- Bent rod
Physical obstruction
Worn piston seal
Blocked cylinder port
38
Which of the following measurement devices are indirect measurement tools?
Optical comparator
shotgun
Indicator
both A and B
39
In addition to the volume, what information is needed to determine a complex object's weight?
Circumference
Area
Balance
Density
40
When measuring a part that is shorter than the reference, how is the final length determined?
Use a different reference part that is shorter
Subtract the value of the indicator reading from the master part length
Use only the dial indicator reading for the part
Add the value of the indicator reading to the master part length
41
Wire sling has 80% bending efficiency. In a corrosive environment, rope efficiency is 75%. Use __________ overall.
50%
80%
70%
60%
42
Which of the following is the second step in the silent chain installation process?
Mount the sprockets
Align the sprockets
Mount the motor and the driven component
Inspect the sprockets
43
A mechanical blockage of a DCV spool can result in __________.
Bubbles in the fluid
A burned out solenoid
Milky fluid appearance
Cavitation
44
gas compresses,its volume shrinks and its temperature rises. Air leaving the discharge valve of a compressor ranges from
false
true
45
True or false: QEV faults are usually due to blocked valves or worn gaskets.
False
True
46
True or false: A differential pressure gauge measures the difference between the pressures at two ports.
True
False
47
What is a gauge fixture designed to do?
Assure that the measurement is always taken from the same reference point
Accurately hold the indicator
Accurately position the part
Both B and C
48
Which symptom of pilot-operated DCV failure involves a delay in air delivery to the actuator?
Valve responds sluggishly
Spool does not return to neutral
Valve functions incorrectly
Shifting is noisy
49
Which of the following is NOT a basic feature of a hook?
Tip
Shank
Saddle
Throat
50
which dial indicator component enables the indicator to be zeroed to a reference dimension?
probe
Bezel
dial face
Revolution counter
51
What method is used to find the weight of a load?
Manufacturer's data
All of the above
Common stock weights
Material weight calculations
52
When working around pneumatic equipment you should ____
Wear long sleeves
Wear loose fitting clothes
Remove any rings
Wear canvas shoes
53
Multiple-strand chain drive sprockets constructed of one or more single sprockets that have been joined together side by
True
False
54
Vacuum gauges indicate to the technician the difference between __________ and the atmosphere.
- Hydraulic pressure
Water pressure
Electrical pressure
System pressure
55
On a multiple belt V-belt drive __________.
Only the outer tension is checked
Minor variations in belt length are allowed
All belts having the same nominal size will be equal in length
All belts should have the same match code
56
The function of a clutch is to __________.
Provide a coupling between two rotating shafts
Reduce vibration between two mating surfaces
Provide a heat sink between a motor and a shaft
Increase torque while reducing shaft speed
57
What is the measuring tool that is useful for accurately checking the alignment of machinery shafts?
caliper
Bubble
Dial Indicator
Micrometer
58
flow rate measurements are taken using special devices like pitot tubes, orifice plates, and ___
Test gauges
- Barometers
Rotameters
Bourdon manometers
59
If you need additional length on a sling, the best method is to __________.
Tie slings together
Glue slings together
Shackle slings together
Use longer slings, if possible
60
If there is a suspended load, where should the ground man/rigger NOT be positioned?
In the load's destination
In front of the load
Beside the load
Under the load
61
Before you remove pressure from the system, you should ____
Support any overrunning loads
Check the compressor's pressure reading
Remove all safety shields
Check the compressor's CFM
62
What are the ends of a chain in a chain drive fastened together with?
Rivet
Half-link
master link
spring clip
63
What is the flow rate formula?
Q = T / V
Q = TV
Q = V × T
Q = V / T
64
The center of gravity of a load must be found before lifting in order to prevent __________ of the load.
Dropping
Swinging
Shocking
Tipping or toppling
65
How are eyebolts most often used in rigging?
To attach slings to loads
To attach slings to lifting devices
To attach lifting devices to lift supports
To attach lifting devices to loads
66
lockout valve is a two-position valve that in its closed position blocks the supply line and ___downstream air pressure.
Vents
Regulates
Increases
Maintains
67
Which of the following is the second step in the process of installing a multiple-strand chain drive system?
Mount the motor
Align the sprockets
Mount the chain
inspect the sprockets
68
Fiber rope is typically rated for use between __________ and __________.
-20 °F (-29 °C); 100 °F (38 °C)
50 °F (10 °C); 120 °F (50 °C)
20 °F (-7 °C); 100 °F (38 °C)
-100 °F (-73 °C); 20 °F (-7 °C)
69
Hoist brakes should be checked __________.
For every lift
Once a day
Once a week
Once a month
70
This test can help identify faulty components.
System
In-circuit
Out-of-circuit
Temperature
71
Which troubleshooting method involves measuring near the middle of the circuit to isolate the problem?
Output-back
Shotgun
Half-split
Symptom and cause
72
Where is the lifting capacity listed on the wire rope sling?
Color coded on the wire rope
Chart on the rope rack
On the tag attached to the wire rope
On the rope diameter chart
73
Filters need to be chosen that __________.
Fit the enclosure
Match color of equipment
Meet the OEM specifications
Fit the thread size
74
The third component of the branch line air supply is the pressure regulator which
acronym
is the three components known.
The FRL
The RLF
It is not known by an acronym
The LRF
75
True or false: The most common sources of zero system pressure are compressors, regulators, filters, and airline leaks.
False
True
76
mastering indicator is important the part used as a master is placed in the same position as the parts to be measured.
False
True
77
True or false: Pseudo-cavitation is also called ingestion.
False
True
78
When there is a pressure drop across a directional control valve, the likely indication is __________.
A faulty coil
No work being done
No flow
Flow
79
Which of the following signs of QEV failure involves air exhausting at the wrong time during the cycle sequence?
Slow actuator speed
Faulty actuator timing
No actuator speed
None of the above
80
Which of the following is NOT true about cavitation?
formation and collapse of gaseous oil cavities in the liquid in the pump
One of its effects on the pump is increased lubrication
It can cause the pump to sound like it has marbles in it
They occur when the hydraulic oil flow at the pump inlet is restricted
81
A hook should be replaced when its throat dimension increases by __________ or more.
50%
1/8 in (3.2 mm)
2%
5%
82
Which of the following is NOT a typical column in a filter troubleshooting chart?
Fault
Remedy
Pressure reading
Possible cause
83
Which of the following are advantages of digital indicators?
quicker to read
all the above
easier to read
connect to computers
84
True or falseDuring the operation of a DCV,pilot supplies air to the end of the main valves spool and forces it to shift
True
False
85
In most cases, where should an idler pulley be mounted?
None of the above
On a fixed height mount
The tension side of the belt
The slack side of the belt
86
Identify the type of hook in the graphic.
Sorting
Hoist
Foundry
Grab
87
Which of the following is NOT one of the four common types of brakes?
Band
Shoe
Boot
Plate
88
when a cone clutch is engaged, the cone is pushed against the __________ by the clutch spring.
plate
fork
bearing
cup
89
True or false: Hydraulic equipment has moving parts through which high forces are often transmitted.
True
False
90
Which of the following is not a symptom of a failed DCV?
DCV spool always returning to Neutral
Sluggish response
DCV not shifting
Valve function is incorrect
91
What is the most popular material for surface plates?
steele
Granite
marble
Concrete
92
True or False: All loads are rigged the same regardless of size, shape, weight, or type of material.
False
True
93
True or false: You can apply soapy water to a supply inlet to test it.
False
True
94
A silent chain is how much quieter than a roller chain?
100%
50%
75%
35%
95
Which type of sprocket is commonly used on bicycles?
No Hub
Double Hub
Triple Hub
Detachable Hub
96
How often should the oil of a chain drive be changed?
Every 1500 hours of operation
Every 1000 hours of operation
Every 2500 hours of operation
Every 2000 hours of operation
97
Which of these components are part of an electrical lockout/tagout system?
Hasp
Tag
All of the above
Lock
98
Inserting a pressure gauge into the pneumatic system using a tee creates a test station or
Test point
Bypass
Test zone
Tap line
99
To measure a Wedge Belt you must measure along the pinch line, therefore, belt marked: 5V850 what be its nominal length
850 centimeters
85 inches
5 meters
850 millimeters
100
Metal mesh slings are made of preformed __________ that are meshed together.
Strands
Links
Fibers
Spirals
101
A contaminated pneumatic system can cause slow or erratic actuator movement.
false
true
102
Which type of eyebolt is designed to be used with a sling at an angle?
Shoulder
Regular
Xtended shank
Machinery
103
Identify one reason a hydraulic cylinder would bang at the end of its stroke.
Too much air in the system
Cylinder rod is bent
System has cavitation
Improperly adjusted cylinder cushions
104
Which of the following is a possible cause of cavitation?
The fluid is not viscous enough
The atmospheric pressure is low
The suction line is too large
The suction lift is too low
105
Which generator failure symptom indicates that the generator is totally blocked?
Low vacuum pressure
No vacuum pressure
Noisy operation
None of the above
106
The three common symptoms related to quick exhaust valve failure include slow actuator speed_and faulty actuator timing.
Too much actuator speed
No actuator speed
Erratic actuator speed
Noisy actuator operation
107
True or false:
it is best to perform the most difficult tests first to eliminate them.
True
False
108
___ is the quality of an object to resist a change in speed or direction of motion.
- Centrifugal force
Thrust
- Inertia
- Acceleration
109
Purchased slings should have a(n) _ that describes their working load limit for a straight pull under ideal conditions.
Symbol
Tag or label
Owner's manual
Color
110
What is a quick method for finding the center of gravity for symmetrical objects with equal length and width?
Draw lines from corner to corner diagonally across the plate
Draw a cross on the plate from top to bottom and left to right
Find the area of the plate
Halve the object's length perpendicular to the lift
111
Plumbing leaks in the suction line can occur due to __________, physical damage to the exposed pipes, or a worn seal.
Cracks or leaks in the system
Vibration
Fluid too low
Improper handling
112
A centrifugal clutch will engage __________.
When the clutch pedal is released
When the electric field is energized
When the drive shaft reaches a certain speed
When the engine oil reaches a certain temperature
113
Which of the following is a safety rule for safe hydraulic troubleshooting?
Do not work on slick floors
Remove stored power
Support any overrunning loads
all the above
114
Which of the fault symptoms of flow control valve involves slow actuator speed and check valve in the closed position
External leakage
Restricted reverse flow
Non-adjustable flow
No flow
115
In a pneumatic distribution system, what components tee off of the main distribution line?
Drip legs
Drop legs
Branch lines
Drain legs
116
Which of the following is a typical column in an inspection faults table?
All of the above
Fault
Corrective action
Probably causes
117
To ensure a true vertical lift, a __________ hoist should be used.
Single-reeved
Single-leg
Horizontal
Double-reeved
118
Which of the following is a typical column in a pilot-operated, AC solenoid-controlled DCV troubleshooting chart?
test method
All of the above
possible cause
symptom
119
you have No Actuator Movement symptom,one of the test to perform when troubleshooting is check for _ in the pump motor.
Bad bearings
Incorrect wiring
Bent pump shaft
Burned wiring
120
A benefit of a friction-type clutch is _______
It can be engaged at high speed
It transmits torque in one direction only
It generates heat
It does not slip
121
What is the last step in measuring a part using indirect measurement?
measure the part
add the master link to the dial indicator reading
add the dial reading with the revolution counter reading
measure the master
122
True or false: With V-belts, the belt deflection force is determined using a table.
True
False
123
True or false: A flow control valve combines both a check valve and needle valve into one unit.
False
True
124
Which of the following is true of timing belt drives?
They are corrosion-free
They require lubrication
They require a lot of maintenance
They are not very reliable
125
__________ connections are the strongest way to permanently attach wire rope to end fittings.
Wedge
Rope knot
Spelter socket
Wire clip
126
Particles as small as __________ microns can damage a regulator and lead to a blockage.
50
100
500
5
127
Which of the following would accurately determine the pitch length of a chain?
Multiply the length of the chain by the pitch
Multiply the sag of the chain by the pitch
Multiply the number of pitches in the chain by the pitch
None of the above
128
According to the Lubricator Troubleshooting Chart, if the lubricator is delivering too much oil,what might be the cause?
Total blockage of the bowl
Incompatible chemicals
Lubricator bowl overfilled
Clogged pick up tube
129
The function of a sling is to __________.
Lift or pull a load
Secure a load to a flatbed truck or rail car
Tie two I-beams together
Provide a temporary resting place for a load
130
One of the tests to perform when troubleshooting No Actuator Movement symptom is check for incorrect wiring in the pump
False
True
131
Troubleshooting charts help using five steps including:Identify the symptom,Look up the possible faults, Identify remedy
Identify the possible cause
Identify the amperage draw of the compressor
Identify the motor on the compressor
Identify the filters the compressed air system
132
When performing V-belt maintenance, what is the first step
?
Check belt tension
Check sheave alignment
Clean belts and sheave grooves
Check for sheave groove wear
133
A common use of a __________ hoist is to pull an object horizontally
Crane
Lever-operated
Endless chain
Electric
134
On an electric hoist, operator commands to the hoist are given through a handheld control box called a(n) __________.
Teleprompter
Remote radio controller
Actuator
Pendant
135
No oil delivery, delayed oil delivery broken or crazed bowl are four common symptoms that a lubricator is about to fail
Too much oil delivery
Too little oil delivery
No air pressure
Low air pressure
136
To determine the safe operating pressure of a particular control valve, look in the __________.
Loop diagrams
Installation drawings
Manufacturer's specifications
Plant drawings
137
The air regulator must follow the air filter, but be installed before the lubricator because why?
OK to swap the filter+ the lubricator but regulator must stay between them
It doesn't matter which way they are installed
The regulator in front of the filter would create flow issues
Regulators do not work well when oiled and can be damaged by small particle
138
Compared to the QD bushing, the split taper __________.
Is smaller and lighter
Tends to slip under heavy loads
Has a higher degree of taper
Has a lower degree of taper
139
Which pneumatic system fault would likely occur if there were a problem with the air supply, such as a worn compressor?
High pressure
None of the above
Low pressure
Zero pressure
140
Which of the following components is always considered when calculating the weight of a load in rigging?
Attachment devices
Lifting device
Sling
Lift support
141
Electromagnetic brakes use a main brake __________ to engage the brake.
- Spring
- Spline
- Lever
- Magnet
142
Why is it good rigging practice to lift a load that is well below the working load limit (WLL)?
It avoids failure due to human error when assembling the rigging
It allows workers to move loads faster
It avoids failure due to unforeseen changes in conditions and loads
It is easier to rig
143
A pneumatic hoist utilizes __________ to provide its lifting force.
Electricity
High pressure steam
Compressed air
Water pressure
144
What two categories do belt manufacturers use when creating tables to aid in troubleshooting?
Inspection Faults and Operating Faults
Categories vary by manufacturer
Preventative Maintenance and Repairs
Probable Causes and Faults
145
In what cases does the design factor of a rigging component not provide enough margin of safety?
Shock loads
Maximum loads
Unbalanced loads
Stacked loads
146
first approach a pneumatic system that requires troubleshooting, take the time to __________ the entire system.
Manually operate
Wipe down
Pressure test
Visually inspect
147
What final step is often forgotten when cleaning up after a lift?
Store slings where they cannot be rolled over by trucks
Safely stow away rigging hardware
Block round parts, such as pipes, to safely rest the load
Protect the load's lifting holes or bolts from damage and dirt
148
What is the function of a chain breaker?
To sever a chain in two
to remove a link from chain
To dispose of an unusable chain
None of the above
149
What can a belt idler pulley be used for in a V-belt drive?
All of the above
Add tension to the belt
Automatically adjust tension under varying loads
Keep long belts from whipping
150
Why would a gauge block be used as the master, or reference block in indicator measurement?
both a and b
to reduce error
none of the above
this is what is always used
151
A fault of using isolation valves is that this can cause pressure shocks to the gauge and reduce its lifespan
True
False
152
The choker hitch is popular because of the __________.
Elasticity of the components
Variable length of the line
Clamping effect on the load
Ease of assembly
153
How many basic types of V-belt configurations are there
4
3
5
6
154
vacuum generator appears to generate low vacuum pressure, the first test you should perform is a _ test of the fittings.
Continuity
Leak
Hydrometer
Percussion
155
The center of gravity of a load must be found before lifting in order to prevent __________ of the load.
Dropping
Shocking
Tipping or toppling
Swinging
156
determining the maximum level of force at which rigging components can be used, OSHA requires a design factor of what #?
5
1
2
10
157
What might it mean when cleaning out contaminants does NOT fix low pressure?
The filter is too small for the system's needs
The system is contaminated
The filter is too big for the system's needs
None of the above
158
FHP belts are identified by the letter "L". There are four sizes of FHP belts; they include
2L, 3L, 4L, and 5L
1L, 2L, 3L, and 4L
5L, 10L, 20L, and 30L
2L, 4L, 6L, and 8L
159
Cylinder drift can be caused by __________.
Incorrect fluid flow
Misadjusted cylinder cushions
Internal leakage
Pilot-operated check valves
160
When a sling is used at an angle, its vertical lifting ability __________.
Increases
Cannot be determined
Decreases
Remains the same
161
Which of the following is a major cause of pseudo-cavitation?
The suction line contains plumbing leaks
he shaft seal is worn
The fluid level in the reservoir is low
All of the above
162
True or False: In many cases, the exact length of a particular belt varies a little from the nominal length.
True
False
163
Erratic actuator movement might indicate which fault?
Incompatible chemicals
Air contaminated
Partially clogged filter
Totally blocked port
164
Which type of bushing has industries such as the oilfield equipment industry standardized on?
Split taper
All of the above
QD
Taper lock
165
On an endless chain hoist, the distance from top to bottom hook when fully extended is called the _________ of the hoist
Reach
Length
Nominal size
Bight
166
A jaw type clutch __________.
Generates heat when engaged
Can be engaged at any speed
Is the simplest of positive clutches
Should be slipped to provide a "soft start"
167
There are three classes of pneumatic system faults; they include machine sequence faults, system faults, and __________.
Machine performance faults
Compressor faults
Line faults
Electrical system faults
168
Besides slowly and smoothly lifting the load, what other guidelines should operators follow during the lift?
All of the above
Always stand to the side of the load
Always use a tag line to control rotation
Always keep fingers, hands, and body clear of pinch points
169
There are four possible causes for high regulator pressures including using a non-venting regulator,the poppet seal worn
Regulator pressure is set too high
The regulator has failed and should be replaced
The regulator is mounted incorrectly
The DCV has failed
