flash_cards_basic_-_fall_2023_20240520023410 Flashcards
1
Q
What part and section of the OHS code describes the membership of a joint work site health and safety committee? A part 12 section 197 B part 13 section 197 C part 14 section 197 D part 15 section 197
A
B part 13 section 197
2
Q
What part and section of the OHS Code describes the requirements and options for protective footwear? A part 18 section 229 B part 18 section 232 C part 18 section 233 D part 18 section 236
A
C part 18 section 233
3
Q
What part and section of the OHS code describes the requirements for work training about WHIMIS? A part 29 section 394 B part 29 section 395 C part 29 section 396 D part 29 section 397
A
D part 29 section 397
4
Q
What are the first aid requirements for low hazard work at a close worksite with 5 to 9 workers at the worksite per shift
One emergency first aid are one standard first aider number to first aid kit three blankets two standard first aiders number to first aid kit three blankets
Two standard first aiders number three first aid kit three blankets stretcher splint
One emergency first aider one standard first aider number to first aid kit
A
One emergency first aider one standard first aider number to first aid kit
5
Q
What is an employer responsibility with regard to hazard assessment on the work site?
A to provide easy and immediate access for any worker to the OHS act regulation and code at the worksite
B to ensure suppliers are aware of their responsibility to provide necessary information on any hazards related to their products
C to develop a plan to illuminate or control any hazard identified at the worksite
D to ensure all workers participate in daily meetings to inspect their tools and plan to work
A
C to develop a plan to illuminate or control any hazard identified at the worksite
6
Q
How is the Worker’s Compensation Board of Alberta funded?
100% of the funding for the WCB comes from employers in Alberta
75% of the funding from the WCB comes from employers and 25% comes from the provincial government
50% of the funding for the WCB comes from employers 25% from the provincial government and 25% from employees
33% of the funding for the WCB comes from employers 34% from the provincial government and 33% from employees
A
100% of the funding for the WCB comes from employers in Alberta
7
Q
What are the four categories of workplace hazards?
Ecological chemical ergonomic physical
Biological chemical ergonomic physical
Biological, ecological, chemical, physical
Chemical, physical, psychological, ecological
A
Biological chemical ergonomic physical
8
Q
What is an example of an engineering control for worker protection? Renovation Subdivision Isolation Activation
A
Isolation
9
Q
When is an administrative control put in place for worker protection?
To identify the correct personal protective equipment to be used in a hazardous situation
To document the details of the implementation of an engineering control
When an engineering control cannot eliminate or control a hazard
To isolate a hazard through containment or enclosure
A
When an engineering control cannot eliminate or control a hazard
10
Q
Who is responsible to have an emergency response plan in place at the worksite?
Employees
OHS inspectors
Joint work site health and safety committee
Employers
A
Employers
11
Q
What part of the OHS code covers first aid requirements at the worksite? Part 10 Part 11 Part 12 Part 13
A
Part 11
12
Q
What must your employer do if first aid supplies are stored in secured containers at the worksite?
Ensure the containers are clearly marked to indicate their contents
Ensure the containers are stored in a dust proof environment
Ensure the containers are not start more than three layers high
Ensure the containers are inspected monthly to ensure contents are safe
A
Ensure the containers are clearly marked to indicate their contents
13
Q
What number and type of first eaters must your employer ensure our present at an isolated worksite with low hazard assessment rating and 65 workers at the worksite per shift?
One standard first aider
One standard first aider and one emergency first aider
Two standard first aiders
Two standard first aiders and one emergency first aider
A
Two standard first aiders
14
Q
What is the duty to use personal protective equipment according to the Alberta OH and S code?
A clause that must be included in the employment contract of every construction worker in Alberta
A sign that must be posted at the entrance to any worksite where PPE is required
The part of the OHS code that describes the different type of PPE to be used on the work site
When you and your employer must do if a hazard assessment identifies the need for use of PPE
A
When you and your employer must do if a hazard assessment identifies the need for use of PPE
15
Q
Who is responsible to ensure worksite emergency response plans remain up-to-date? The employer The employer and the employees The employees The OHS inspector
A
The employer and the employees
16
Q
When a worksite hazard assessment identifies that workers are required to wear PPE what is your employees responsibility?
Ensure all workers are informed about the need to wear PPE
Ensure all workers properly use and where the required PPE
Put a posters indicating a hazard assessment has identified that PPE is required
Ensure all workers are provided with funding to purchase required PPE
A
Ensure all workers properly use and where the required PPE
17
Q
What is an employees responsibility with regard to the use of PPE?
To inspect your PPE once a month
To modify poor fitting PPE so it fits properly
To inspect your PPE prior to each use
To wear your PPE only when you sent an accident may happen
A
To inspect your PPE prior to each use
18
Q
Industrial protective headwear must comply with what standard? ULC PPE WCB CSA
A
CSA
19
Q
What is not an obligation your employer assumes went to hazard assessment indicates the need for PPE?
To post a duty to use personal protective equipment sign at all entrances to the worksite
To ensure employees are trained in the youth care limitations and maintenance of their PPE
To ensure Workers properly use and wear PPE
To ensure the PPE is in a condition to perform the function intended
A
To post a duty to use personal protective equipment sign at all entrances to the worksite
20
Q
What is the characteristic of protective footwear with a yellow triangle on the outer side or tongue of the right shoe?
Sole puncture protection and grade 2 protective toe
Sole that provides electrical shock protection and a grade to protective toe
Sole puncture protection in grade one protective toe
Soles that provide electrical shock protection and a grade one protective toe
A
Sole puncture protection and grade 2 protective toe
21
Q
In what situation is your employer obligated to provide you with proper PPE according to the OHS code?
When required PPE must be replaced more frequently than once per year
When required PPE must be replaced more frequently than once every two years
When workers are exposed to respiratory hazards or excessive noise levels
When workers are exposed to respiratory hazards only
A
When workers are exposed to respiratory hazards or excessive noise levels
22
Q
What standard must a full body harness meet if manufactured on or after July 1, 2009?
a) WCB
b) ULC
c) PPE
d) CSA
A
d) CSA
23
Q
How often must you inspect your fall arrest equipment?
a) before use on the first shift of the week
b) before use on first shift of the month
c) before use on each shift
d) only after equipment has been used to protect you from a fall
A
c) before use on each shift
24
Q
What is the minimum distance a ladder must protrude above the intended landing point?
a) .3m
b) 1m
c) 1/4 the length of the ladder
d) 1/4 the distance of the base of the ladder from the base of the wall or structure
A
b) 1m
25
The safety factor for a scaffold must be designed and constructed to support at least:
A) three times the load that may be imposed on it
B) four times the load that may be imposed on it
C) five times the load that may be imposed on it
D) six times the load that may be imposed on it
C) five times the load that may be imposed on it
26
```
At what height must an employer have a guard rail erected for a temporary work area?
A) 8 feet
B) 10 feet
C) 12 feet
D) 14 feet
```
B) 10 feet
27
When conducting a hazard assessment related to lifting and handling a load your employer must consider the:
A) Weight size and shape of the load
B) cost of renting moving equipment
C) insured value of the load to be moved
D) number of people required to move the load
A) Weight size and shape of the load
28
```
What is not an example of a recommended lifting technique?
A) avoid awkward postures
B) lift loads smoothly
C) lift no higher than eye level
D) begin lifting at knee level
```
C) lift no higher than eye level
29
What is the goal of proper lifting technique?
A) to constantly practice lifting to become more skilled
B) to increase lifting efficiency and capacity with practice
C) to increase the number of lifts performed per day
D) to eliminate loading stresses on the soft tissue of your lower back
D) to eliminate loading stresses on the soft tissue of your lower back
30
How is safe working load SWL defined?
A) Breaking strength divided by the safety factor
B) safety factor divided by the breaking strength
C) The ultimate tensile strength
D) The safest way to move and lower a load
A) Breaking strength divided by the safety factor
31
What does the term shock loading mean when applied to rigging equipment?
A) A stray spark from a work operation occurs when the sling has the load applied to it
B) The sling is exposed to stress by having the load suddenly started or stopped
C) The sling comes into contact with an electrical conductor when the sling is loaded
D) The sling is used as an electrical conductor to connect to a load sensor in the lifting equipment
B) The sling is exposed to stress by having the load suddenly started or stopped
32
```
What rigging factor of safety is to be used when lifting and transporting workers?
A) 2:1
B) 5:1
C) 10:1
D) 20:1
```
C) 10:1
33
How often must rigging be inspected?
A) when first put into service and every three months after that
B) at the beginning of each work a shift
C) At the beginning of the first shift of the month
D) at the beginning of the first shift of the week
B) at the beginning of each work a shift
34
What is the recommended sling angle when rigging a load?
A) The sling angle must never be greater than 45°
B) The sling angle must never be less than 45°
C) The swing angle must never be greater than 60°
D) The swing angle must never be less than 60°
D) The swing angle must never be less than 60°
35
```
Permanent eye damage in the form of cataracts or retinal damage may result from over exposure to which of the harmful light ray?
A) visible
B) infrared
C) ultraviolet
D) reflected
```
B) infrared
36
```
What type of radiant energy can cause welding flash?
A) Visible light
B) infrared light
C) ultraviolet light
D) gamma rays
```
C) ultraviolet light
37
What must be done when the general public is exposed to harmful welding rays?
A) put up proper screens and warning signs
B) let people look out for themselves
C) Weld only when no one is around
D) avoid the use of a long arc length
A) put up proper screens and warning signs
38
What should you do immediately if you receive a major contact burn?
A) rub the affected area with antibiotic cream
B) seek professional medical attention
C) cool the burned area by immersing and cool still water
D) place the burned area under a fast running warm water tap
C) cool the burned area by immersing and cool still water
39
```
One of the most common workshop hazards is:
A) heavy weights
B) high noise levels
C) other workers
D) poisonous gases
```
B) high noise levels
40
```
Hearing protection should be worn when the noise level is above:
A) 65 dB
B) 85 dB
C) 115 dB
D) 135 dB
```
B) 85 dB
41
```
What type of eye protection is recommended for grinding operation?
A) Full face visor and safety glasses
B) Side shields
C) welding goggles
D) Photo electric welding helmet
```
A) Full face visor and safety glasses
42
```
What shade of filter plate is recommended for medium amperage GMAW operations
A)9
B)10
C)11
D)12 or over
```
C)11
43
```
What type of material offers the best protection against sparks and molten slag?
A) leather
B) wool
C) nylon
D) Cotton
```
A) leather
44
What gloves are recommended for oxy fuel cutting?
A) hard twist cotton
B) silicon treated nylon
C) dry tanned leather gauntlet style
D) Oil treated cowhide with external cotton stitching
C) dry tanned leather gauntlet style
45
Why is a fit test important when using a respirator?
A) so more than one worker can use it
B) so you look professional on the job
C) to prevent inward leaks of contaminated air
D) so you do not have to shave every day
C) to prevent inward leaks of contaminated air
46
Poisonous phosgene gas can be created by vapours of chlorinated hydrocarbon degreasers when the vapours are acted upon by
A) local or general ventilation
B) High concentrations of visible light
C) heavy volumes of fumes
D) ultraviolet radiation from the welding arc
D) ultraviolet radiation from the welding arc
47
```
What type of respirators use filters and cannot be safely used in oxygen deficient atmosphere?
A) Air purifying
B) Airline
C) self-contained breathing apparatus
D) emergency escape breathing apparatus
```
A) Air purifying
48
Which metal when heated or welded will cause metal fume fever if the fumes are inhaled?
A) aluminum
B) zinc
C) chromium
D) cobalt
```
B) zinc
49
```
When oxygen reacts with ultraviolet light from welding the gas produced is:
A) phosphine
B) nitrogen dioxide
C) Ozone
D) carbon monoxide
```
C) Ozone
50
When welding on metal plated with cadmium
A) Beautifully date deoxidized filler metal to avoid porosity
B) consult MSDS for safety procedures to follow
C) General mechanical ventilation is adequate provided there are four complete air exchanges per hour
D) a dust filter mask should be worn
B) consult MSDS for safety procedures to follow
51
```
Hydrogen sulphide gas found in oil and gas wells and concentrations as low as 700 ppm may cause:
A) an uncomfortable rotten egg smell
B) unconsciousness and death
C) an explosion
D) Burning of the eyes and throat
```
B) unconsciousness and death
52
The first line of defence against welding fumes and gases is:
A) A supplied air respirator
B) source extraction equipment
C) to complete all welding during the first half of your work shift
D) to weld outside
D) to weld outside
53
What device breaks the current flow while still at a low level to protect people from electric shock
A) heavy duty circuit breaker HD CB
B) Ground fault circuit interrupter GFCI
C) Heavy duty electrode holder HDEH
D) Transformer rectifier silicon diode TRSD
B) Ground fault circuit interrupter GFCI
54
A vessel that has contained a flammable substance can be made safe from welding by:
A)Steaming thoroughly and welding well hot and still full of steam
B)Steaming well, then allowing the best such a cool and dry out
C)sealing all Vince tightly to prevent atmospheric air from getting inside
D) using a hot water flush, followed by cold water and a drying out period.
A)Steaming thoroughly and welding well hot and still full of steam
55
```
When working in confined spaces it is recommended that cutting torches be ignited and extinguished:
A) outside The confined space
B)Inside the Confined space
C) Near the confined space
D) where ever it is most convenient
```
A) outside The confined space
56
```
Before entering a vessel to make repairs, you should insist on testing the vessel for:
A) Leaks in the vessel and piping
B)Fumes and oxygen deficiency
C)Corrosion or erosion tolerances
D)Blockages in ventilation systems
```
B)Fumes and oxygen deficiency
57
```
Where a worker is authorized to enter a confined space, it must be verified that the oxygen content is:
A) 7% to 12% by volume
B) 2 psi to 12 psi
C)19.5% to 23% by volume
D)24% to 29% by volume
```
C)19.5% to 23% by volume
58
The base of an inclined ladder should be no further away from the base of a wall than:
A) 1 m out for every 2 m a vertical height
B)1/2 the total length of the ladder
C) 1/4 of the vertical height from the base of the ladder to where the ladder contacts the wall
D)1/3 of the vertical height of the supporting wall
C) 1/4 of the vertical height from the base of the ladder to where the ladder contacts the wall
59
The employer shall insure that cylinders containing acetylene are:
A) secured in a vertical position
B) identified using a designated colour code
C)League tested at least once every two years
D)Equipped with useable plugs on the top and bottom of the cylinder
A) secured in a vertical position
60
A worker shall not work or position himself under a raised vehicle or trailer unless it is supported by:
A) stands or blocks
B)A jack with locking pins
C)Hydraulic jacks that do not leak
D) an empty steel barrel on a crossmember
A) stands or blocks
61
```
A load on a scaffold must not exceed what percent of the design load for the scaffold
A) 50%
B) 35%
C) 25%
D) 20%
```
C) 25%
62
A tool rest on a fixed grinder must be:
A) adjusted when the grinder is in motion
B)Such a minimum 6 mm from the wheel
C)Positioned for grinding on the side of the wheel
D) set to a maximum of 3 mm from the face of the wheel
D) set to a maximum of 3 mm from the face of the wheel
63
Who is responsible for the personal safety of everyone in the shop
A) shop foreman
B) plant superintendent
C)Individual worker
D) Alberta occupational health and safety
C)Individual worker
64
Who is responsible for providing workers with WHMIS training?
A) The supplier of control products
B) A training institute or provider
C) The employee must obtain their own training
D) The employer must provide the training
D) The employer must provide the training
65
Employers are responsible to:
A) provide an MSDS for each controlled product used in the workplace
B) inform all workers about chemical hazards at the worksite
C) Train workers about labels MSDS and other identifiers
D) all of the above
D) all of the above
66
Suppliers of control products are responsible to:
A) train employees to see if we dispose of hazardous products.
B) provideMSDS for controlled products they sell or import
C) provide extra labels for employees to use when transferring control products from the original container
D) visit work sites to ensure control products are labelled properly
B) provide MSDS for controlled products they sell or import
67
```
Employees are responsible to:
A) classify controlled products
B) train other employees about WHMIS
C) apply workplace labels where and when required
D) ensure SDS are readily available
```
C) apply workplace labels where and when required
68
The key elements of WHMIS are:
A) employee education, MSDS and product labelling
B) Hazard products act, OHS and MSDS
C) employee labeling, MSDS and employer training
D) product labeling, OHS and controlled product regulations
A) employee education, MSDS and product labelling
69
The goal of WHMIS is to:
A) ensure workers have containers for a controlled products
B) ensure suppliers of control products provide training for all employees
C) protect the worker by providing information on hazardous materials
D) ensure that the requirements for information on hazardous materials are unique to the requirements of each province
C) protect the worker by providing information on hazardous materials
70
an SDS must be provided for each controlled product because they:
A) provide only the essential information from the label and are easier to read in an emergency
B) contain the generic product names and are easier to locate and read than the labels on the containers
C) are only for the employers use when an emergency arises and they can be retrieved from a secure location
D) provide more detailed information that can be provided on a label
D) provide more detailed information that can be provided on a label
71
The supplier label is attached to the:
A) container in which the product is shipped
B) container in which the product is stored
C) worksite near where the product is used
D) invoice where the product is delivered
A) container in which the product is shipped
72
How do you identify a portable gasoline container that is approved for use? It:
A) is approved under the Alberta occupational health and safety code
B) is approved by the Alberta hazardous materials control regulations
C) has a MSDS label affixed to the outside of the container
D) is approved by either one or both of the ULC or CSA
D) is approved by either one or both of the ULC or CSA
73
ventilation system requirements for the worksite are found in the:
A) provincial and national building codes
B) Alberta occupational health and safety code
C) WCB worker handbook
D) Alberta construction safety association
B) Alberta occupational health and safety code
74
Before entering a confined workspace you should:
A) Assemble all necessary tools and equipment to ensure easy access while working in the confined space
B) contact your employer to attain information on dangerous gases present in the confined workspace
C) discuss your work plan with other workers who may have worked in a similar confined space
D) use a gas detector to determine whether the area contains any dangerous fumes or gases
D) use a gas detector to determine whether the area contains any dangerous fumes or gases
75
```
What type of fire extinguisher is versatile in fighting different types of fires
A) regular dry chemical
B) purple K dry chemical
C) multi-purpose dry chemical
D) dry powder
```
C) multi-purpose dry chemical
76
When should you not fight a fire for personal safety reasons?
A) you are wearing fire retardant clothing
B) The fire could block your escape route
C) The fire extinguisher sure does not have an inspection certificate
D) you have not activated the fire alarm
B) The fire could block your escape route
77
What are the four steps of proper portable fire extinguisher use?
A) pull the pin, arm the extinguisher, squeeze the handle, touch the surface after the fire is out.
B) pull the pin, aim the extinguisher, sweep the extinguisher, touch the surface after the fire is out
C) pick up the extinguisher, arm the extinguisher, squeeze the handle, sweep the extinguisher from side to side
D) pull the pin, aim the extinguisher, squeeze the handle, sweep the extinguisher from side to side
D) pull the pin, in the extinguisher, squeeze the handle, sweep the extinguisher from side to side
78
```
Which of the following portable fire extinguishers should be used to fight a small fire burning in a pile of discarded oily rags
A) class A only
B) class a, B and C
C) class C only
D) class D & K
```
B) class a, B and C
79
```
A class C fire involves:
A) electrical equipment
B) combustible metals
C) flammable liquids
D) household combustibles
```
A) electrical equipment
80
It is dangerous to use chisels that have:
A) hard points
B) mushroom heads
C) small cutting points
D) rough cutting edges
B) mushroom heads
81
A cold chisel that has a mushroomed head can be reclaimed by:
A) re-grinding to the recommended included angle
B)Grinding to the original shaft contour
C) re-tempering the mushroomed head
D) filing the head to a ball shape
B)Grinding to the original shaft contour
82
Why should file handles be on files?
A) they reduce the risk of injury.
B) they protect the tang from damage
C) they are available in a variety of attractive colours
D) they protect the cutting edges on the face
A) they reduce the risk of injury.
83
```
A split hammer handle is best repaired by
A) Removing and replacing it
B) Binding it with nylon string
C) Wrapping it with copper wire
D) Taping it with electrical tape
```
A) Removing and replacing it
84
```
The safest way to use a ranch is two
A)Pull on it with study pressure
B)Push it away from your body
C)Tap on it get it started
D) put a pipe handle on it for extra leverage
```
A)Pull on it with study pressure
85
```
A combination square consists of
A)A square head
B)A protractor
C)A centre-head
D) all of the above
```
D) all of the above
86
```
The most versatile type of square is the:
A) Carpenter square
B) Sliding T bevel square
C)Combination square
D) Try square
```
C)Combination square
87
```
A thin rule has been an advantage over a sick rule when
A) Accuracy is a priority
B)Storage room is a problem
C)Rough shop conditions are experienced
D) Great graduations are in 1/16th “
```
A) Accuracy is a priority
88
```
A good tool for accurately transferring measurements is a
A) Tape measure
B) combination square
C)Vernier calliper
D) Set of dividers
```
D) Set of dividers
89
```
A flexible steel rule is an advantage when
A)Measuring long distances
B)Laying out channel iron
C)Finding the centre of circles
D) Measuring on curved surfaces
```
D) Measuring on curved surfaces
90
```
To check whether or not a surface is a true vertical you would use a
A)Torpedo level
B)Framing square
C)Protractor head
D) Centre head
```
A)Torpedo level
91
```
What is the recommended length of a wraparound for making a straight line around pipe
A)One complete turnaround pipe
B)1 1/2 turns around the pipe
C)Twice the pipe circumference
D) Twice the pipe diameter
```
C)Twice the pipe circumference
92
```
The size of pliers is determined by the
A)Length of the jaws
B)Overall length of the tool
C)Amount the jaws open
D) Maximum diameter the tool can grip
```
B)Overall length of the tool
93
Vice grips have an advantage over pliers when:
A) The tool has to grip round material
B) A metric wrench is not available
C) You need to maintain constant pressure
D) You are working on a non-ferrous material
C)You need to maintain constant pressure
94
```
C clamps are size according to the
A)Distance the clamp opens
B)Overall length of the clamp
C)Length of the screw thread
D) Clamping screw diameter
```
A)Distance the clamp opens
95
```
A bar clamp has an advantage when:
A)thick metal is being plant
B)Clamping over greater distances
C)Material needs to be clamped to a bar
D) Pressure is applied in one spot
```
B)Clamping over greater distances
96
```
A 32 teeth per inch hacksaw blade is the best choice for cutting
A)Hard material
B)Soft material
C)Thin stock
D) Thick stock
```
C)Thin stock
97
```
Files are classified by the
A)Jobs you have been asked to do
B)Length shape and cut
C)Size width and kind of material
D) Sheep hardness thickness and cut
```
B)Length shape and cut
98
Call serrated blade snips have an advantage over tinners’ snip when
A)The metal is thicker than 16 gauge
B)14 gauge galvanized iron is being cut
C)Nonferrous metals are to be cut
D) Cutting smaller and more intricate patterns
D) Cutting smaller and more intricate patterns
99
```
Tinners snips are size according to the
A)Length of cut per stroke
B)Maximum jaw opening
C)Thickness that can be cut
D) overall length of the tool
```
D) overall length of the tool
100
How are open ended wrenches sized
A)By the total number of points
B)By measuring the distance across the points
C)By measuring the distance across the flats
D) By the depth of the socket
C)By measuring the distance across the flats
101
An adjustable wrench is recommended when
A)The point of the nut are rounded over
B)You are working with metric fasteners
C)A proper fitting wrench is not available
D) Square nuts are used instead of hex nuts
C)A proper fitting wrench is not available
102
```
Guards on bench grinders should cover
A)1/4 of the wheel
B)1/3 of the wheel
C)1/2 of the wheel
D) 2/3 of the wheel
```
D) 2/3 of the wheel
103
```
The gap between the tool rest and the grindstone on a bench grinder should never be more than
A)1.6 mm
B)3 mm
C)6 mm
D) 12 mm
```
B)3 mm
104
A grinding wheel is classified by
A)The size and type of abrasive and the type of bonding agent
B)The size and width of the stone
C)The outer diameter and the size of the Arbour whole
D) The shape and colour of the wheel
A)The size and type of abrasive and the type of bonding agent
105
```
Safety specifications to consider when selecting a grinding stone or disc is
A)The grit size of the abrasive
B)The type of bonding material
C)The rpm rating of the stone or a disc
D) The size of the tool
```
C)The rpm rating of the stone or a disc
106
```
Addressing tool is used for
A) Putting a find finish on ground edges
B)Refacing the surface of grindstones
C)Squaring the tourist to the Grindstone
D) Checking the clearance between the grind stone and the rest
```
B)Refacing the surface of grindstones
107
```
Bouncing or heavy vibration of the work piece wing grinding are indications that the Grindstone is
A)A coarse grit
B)Travelling too fast
C)Out of round
D) Worn out
```
C)Out of round
108
Before installing a new Grindstone you need to
A)Install a flat washer
B)Rowlett across the floor to check for out of round conditions
C)Inspect the wheel for cracks
D) Lubricate the centre hole
C)Inspect the wheel for cracks
109
```
The flutes have a drill bit
A)Form the cutting edges on the point
B) allow the chips to escape
C)Cause the chips to curl
D) permit cutting oil to reach the cutting edges
E) All of the above
```
E) All of the above
110
```
The web of a drill bit:
A)Separate the flutes
B)Is the supporting section of the bit
C)Gradually increases in thickness throughout its length
D) All of the above
```
D) All of the above
111
The risk of the drill bit grabbing the work or breaking
A)Increases as the bit breaks through the workpiece
B)Can be avoided by using adequate lubricant
C)Can be minimized by running the drill faster
D) Only occurs when drilling hardened steel’s
A)Increases as the bit breaks through the workpiece
112
A V-block should be used when drilling holes in
A)Round material
B)L shapes
C)Non-ferrous material
D) Items were very accurate whole dimensions are needed
A)Round material
113
```
Hand drills are rated by the
A) Horsepower rating
B) Maximum rpm
C) Depth they can drill
D) Size of the chuck
```
D) Size of the chuck
114
```
apered shanks are most common on _____Drill bits
A) Small
B)Large
C)Number
D) Letter
```
B)Large
115
```
Slots in the drill press table are provided for
A)Mounting the drill head
B)Draining the cutting fluid
C)Clamping jigs to the table
D) Securing the column
```
C)Clamping jigs to the table
116
Magnetic base drill press is an advantage when
A)Drilling nonferrous metals
B)Very accurate drilling is required
C)Holes are drilled in the vertical plane
D) The cutting chips need to be removed
C)Holes are drilled in the vertical plane
117
```
Forming steel plate into cylinders is a process known as
A) Breaking
B) bending
C)Pressing
D) Rolling
```
D) Rolling
118
The main reason for using templates when forming steel is to:
A)Maintain accuracy
B)Increase production
C) eliminate tactical errors
D) Enhance your pattern development skills
A)Maintain accuracy
119
```
Before using a power break it is good practice to:
A)Turn the machine on
B)Check with your foreman
C)Confirm the machine settings
D) Takeoff your safety glasses
```
C)Confirm the machine settings
120
```
The power tool that is best suited for creating intricate shapes and multiple Benz is the
A)Plate roll
B)Power bender
C)Power brake
D) Hydraulic press
```
B)Power bender
121
```
Trip hammers are a good tool for
A)Sharpening bucket teeth
B)Pounding out dents
C)Removing alignment pens
D) Driving bolts into misaligned holes
```
A)Sharpening bucket teeth
122
What two factors must be considered when setting the blade clearance on a PowerShare
A)Hardness and ductility
B) shear strength and thickness
C)Material type and thickness
D)Sheer blade condition and lubricant type
C)Material type and thickness
123
One advantage of a vertical bandsaw is that it
A)Permits better operator visibility
B)Can be used to cut curves
C)Provides easy access for blade changes
D) Shuts itself off when the cut is completed
B)Can be used to cut curves
124
When cutting with a horizontal bandsaw it is possible to
A)Cut several pieces of barstock at the same time
B)Cut a variety of structural shapes
C)Start the cut and then go work on something else
D) All of the above
D) All of the above
125
```
A notcher is a cutting tool found on
A) A bandsaw
B) a cut off saw
C)An ironworker
D) A hydraulic press
```
C)An ironworker
126
Safe cutting of L shaped structures in a cut off saw requires
A)A labourer to do the work
B)One vertical leg of the L-shaped against the stationary block of the clamping device
C)One vertical leg of the L-shaped against the adjustable block of the clamping device
D) Both legs of the L-shaped resting on the tool base
B)One vertical leg of the L-shaped against the stationary block of the clamping device
127
Power positioners range in size from small top top versions to large industrial versions
A)True
B)False
A)True
128
```
The shape size or length of an object being welded on the positioner may require the use of white to help it rotate easily
A)Counterweights
B)Slings and an overhead crane
C)Pipe stands
D) all of the above
E) Both a and C
```
E) Both a and C
129
```
What processes can a power position be used with
A)Manual
B)Semi automatic
C)Automatic
D) both a and B
E) all of the above
```
E) all of the above
130
```
Cutting a notch into both ends of a wild and applying force against one and is known as a
A)Stress flow test
B)Weld fault test
C)Weld press test
D) Nick break test
```
D) Nick break test
131
Notch affect in the world has stress flow lines
A)Concentrated at one point
B)Flowing from left to right
C)Flowing smoothly through the world and joint
D) Stretched beyond the elastic limit
A)Concentrated at one point
132
```
Tapered transition ratio of 3 to 1 when joining plates of different thicknesses would
A)Waste time and energy
B)Decrease notch affect
C)Decrease cross-section strength
D) Create a point of high stress
```
B)Decrease notch affect
133
```
A high concentration of stress in a weld causes
A) Stress flow
B )Hi strength
C) Notch effect
D) Nick break
```
C) Notch effect
134
```
An insufficient route opening on a groove weld is likely to cause
A)Lack of penetration
B)Excessive penetration
C)Complete fusion
D) Stray arc strike
```
A)Lack of penetration
135
Which of the following variables would be effective and controlling excessive penetration on a groove weld
A)Reduce the land thickness
B)Increase the bevel angle
C)Decrease the root opening
D) Preset the plates to widen the groove opening
C)Decrease the root opening
136
Porosity in a world can be reduced by
A)Cleaning the joint area before welding
B)Welding with string or beads instead of a weave bead
C)Maintaining a fast travel speed with the electrodes
D) Avoiding the use of low hydrogen electrodes
A)Cleaning the joint area before welding
137
```
Undercut is most commonly caused by
A)Current setting to low
B)Travel speak too fast
C)Using high iron powder electrodes
D) Incorrect electrode angle
```
D) Incorrect electrode angle
138
```
Distortion can be controlled by
A) Making several passes using small electrodes at low current settings
B) Using a low arc length
C) Using low hydrogen electrodes
D) Maintaining an accurate joint fit up
```
D) Maintaining an accurate joint fit up
139
```
Which of the following can cause a quenched and brittle condition in metal?
A)Astray arc strike
B)Welding current set to low
C)Inadequately filled crater
D) Using a damp electrode
```
A)Astray arc strike
140
Which situation would most likely produce slag inclusions in multipass welds?
A) High current settings with a short arc length
B) High current setting with a normal are clean
C) Low current setting with a long arc length
D) Removing the slide between passes
C) Low current setting with a long arc length
141
```
Longitudinal cracks in the world can be caused by
A)Excessive travel speed
B)Excessive joint restraint
C)Arc length too long
D) Incorrect electrode inclination
```
B)Excessive joint restraint
142
Incomplete penetration would likely be caused by
A)Travel speak to slow
B)The root opening to narrow
C)Electro diameter too small
D) Welding with excessively high current settings
B)The root opening to narrow
143
Describe the oxy fuel cutting process
Oxyfuel cutting is a controlled process of rapid oxidation in which steel is heated to its kindling temperature and a high-pressure jet of pure oxygen is directed to the heated area. Metal exposed to the oxygen oxidizes and is blown away by the oxygen jet stream.
144
What two Ferrous based models cannot be cut satisfactorily with an oxy fuel cutting torch
A)
B)
Cast Irons
| Stainless Steels
check
145
```
When A piece of metal is cut it creates a cut gap called the
A) Groove
B)Bead
C) Kerf
D) Crater
```
C) Kerf
146
```
On a combination cutting torch the oxygen valve on the torch handle must be
A)Close tightly
B)Partially open
C)Fully open
D) Used to adjust to a neutral flame
```
C)Fully open
147
The rivet cutting tip is designed to
A)Make suitable holes for riveted construction
B)Facilitate right angle square hole cutting
C)Facilitate cutting in confined spaces
D) Cut off rivet and bolt heads without disturbing the parent metal
D) Cut off rivet and bolt heads without disturbing the parent metal
148
```
Which cutting chip has the preheat orifices in a small pitch circle around the cutting orifice
A)Standard cutting chip
B)High-speed cutting tip
C)Gouging tip
D) Rivet cutting chip
```
B)High-speed cutting tip
149
```
The larger the orifices of a cutting tip the
A)Less gas you burn
B)Greater the heat loss
C)faster you catch
D) Thicker the plate that you can cut
```
D) Thicker the plate that you can cut
150
```
Which metals can you cut easily using the Oxyfuel cutting process
A)Cast iron’s
B)Mild steel’s
C)Stainless steel’s
D) Nickel alloys
```
B)Mild steel’s
151
```
Which oxy fuel torch design has the mixer chamber inside one of the tubes leading to the torch head
A)Tip mixing
B)High speed
C)Pre-mixing
D) Oxygen Lance
```
C)Pre-mixing
152
```
Templates for magnetic tracers are made of
A)Steel
B)Nonferrous metal
C)Plastic
D) Paper cut outs
```
A)Steel
153
```
Photoelectric cells and computer controls are used with ______Tracer guided cutting machines
A)Manual
B)Machine
C) magnetic
D) Electronic
```
D) Electronic
154
```
When preheating for flame cutting the metal should be heated until it reaches its
A)Liquid state
B)Bright yellow colour
C)Kindling point
D)Transition temperature
```
C)Kindling point
155
```
When the cut is rough and slag accumulates on the bottom edge the likely causes is
A)Using propane fuel gas
B)Using oxygen that is only 99.5% pure
C)Using a dirty tip
D) Using a cutting attachment type torch
```
C)Using a dirty tip
156
When piercing holes in a plate you should
A)Press the cutting lever sharply to start the cut
B)Allow the preheat cones to touch the material surface
C)Raise the oxygen pressure by 25%
D) Raise the tip whe the cutting lever is depressed
D) Raise the tip when they’re cutting lever is depressed
157
What is likely to happen if the cutting travel speed is too fast
A)Productivity increases and your employer is very impressed
B)Slag bubbles to the surface and the cutting action eventually stops
C)The tip overheats and begins to backfire
D) A clean slag free cut is produced
B)Slag bubbles to the surface and the cutting action eventually stops
158
What is the likely problem if the kerf edges are melting back together behind the cut
A)The tip is too large for the material thickness
B)Impurities are in the fuel gas
C)The steel has to hire a carbon content
D) You are running low on fuel gas
A)The tip is too large for the material thickness
159
If a shop were to switch from acetylene to propane gas for cutting it would be necessary to
A) Purchase all new cutting torches
B)Install special fuel gas regulators
C)Check with the manufacturer to determine if the equipment is compatible
D) Change to larger size hoses
C)Check with the manufacturer to determine if the equipment is compatible
160
You can determine a good quality cut by
A) Inspecting the kerf lines
B)Asking the foreman
C)The amount of welding experience the operator has
D) The amount of oxygen and acetylene consumed
A) Inspecting the kerf lines
161
```
Kerf drag lines on a properly perform shape cut should be
A)Irregular and profile
B)Curved to match the shape
C)Perpendicular to the plate surface
D) Horizontally inclined
```
C)Perpendicular to the plate surface
162
```
If you notice the preheat flames changing from neutral to carbonizing during the cutting process the most likely cause would be that the:
A)Oxygen cylinder is nearly empty
B)Acetylene consumption is too high
C)Acetylene cylinder is nearly empty
D) Tip is dirty and requires cleaning
```
A)Oxygen cylinder is nearly empty
163
```
What tools can you use to Layout a structural shape
A)Contour marker
B)Hammer and centre punch
C)Square and level
D) Combination squares
E) All of the above
```
E) All of the above
164
A skid unit requires 2S sheets to be welded together to create a 90° angle how can you cut the S shapes to create the required fit gap?
A) but the flanges together and weld the gaps
B)Cope one beam to fit inside of the other
C)Cut an angle of 45° on each shape and fit together
D) both B and C
E) All of the above
D) both B and C
165
When cutting structural shapes, it is important to remember to watch your torch angle. A torch angle that is off can cause a structural shape to be cut in correctly, which could result in a scrap piece.
True or false
True
166
What is plasma
plasma is a gas that has been heated to extreme temp by an electric arc.
167
```
in plasma arc cutting, plasma is the
A tungsten electrode
B electrons traveling across the arc
C ionized gas
D outer shielding gas
```
ionized gas
168
The plasma arc cutting process
A can only be used on materials 6.4mm thick or less
B can only be used on mild steel and stainless steal
C is used on materials that are electrically conductive
D is used mainly to clean up foundry spills
is used on materials that are electrically conductive
169
list 5 safety hazards associated with plasma arc cutting
```
Electric shock
fumes
noise
radiation
gases
```
170
any available welding power source may be used for PAC true or false
False
171
what are the functions of the plasma cutting torch
the plasma cutting torch functions are too current to an electrode, supply a flow of orifice gas to the contact nozzle and supply secondary shelving gas.
172
```
compressed air is. generally used for PAC on which materials
A carbon steels
B Cooper alloys
C magnesium
D titanium
```
Carbon steel
173
What effect does improper PAC standoff distances have?
improper PAC standoff distances result in poor quality cuts, excessive nozzle wear and slow cutting speed
174
what type of power source is required for CAC-A
either AC or DC
175
what is the purpose of compressed air wit CAC-A
to remove molten metal
176
list 3 metals that give off toxic fumes when cut with the CAC-A process
beryllium
cadmium
lead
177
name the major components of the manual CAC-A electrode holder
the electrode holder are the power cable. the means to grip the electrode and the air passages and orifices to direct the air stream
178
electrodes for CAC-A are usually made of?
graphic and carbon
179
what is the maximum length that a CAC-A electrode should extend from the holder to the workpiece when gouging Carbon steel
180mm 7 inc
180
What is the range of air pressure normally used for CAC-A
the range of air pressure for CAC-A is 550 KPA to 700 KPA 80 psi to 100 psi
181
how are the air jets positioned when air carbon arc gouging in the flat position
toward the work, below the electrode
182
how can you reduce carbon deposits on the joint surface when used CAC-A
use the proper air velocity and electrode movement. maintain a short arc without touching the electrode to the work without an air supply
183
when is the surface hardening a problem when using CAC-A
when working on high carbon steels and cast irons
184
with CAC-A when excessive slag adheres to the edges of the cut what is the likely cause?
Air pressure is to low
185
What colour should your protective clothing be when welding with GMAW and why?
clothing should be dark to reduce reflected light radiation
186
Is it advisable to weld with any arc welding process under wet weather conditions? explain.
when you are exposed to wet weather conditions or standing on wet surfaces, protect yourself from electrical shock hazards by wearing rubber boots with dry socks and rubber gloves
187
The use of shielding gases when using wire feed processes increases the need for good:
a) lighting
b) ventilation
c) heat shielding
d) eye protection
b) ventilation
188
Name 2 toxic gases that can be created from the ultraviolet light produced from welding.
ozone
| phosgene gas
189
How can air quality be affected when welding with a process that uses a shielding gas?
shielding gases in sufficient qualities displace enough air to render the work area oxygen deficient. Dizziness or euphoria is usually the first sign of oxygen deficiency. Precautions must always be taken to ensure adequate breathing air is supplied.
190
High Ultraviolet radiation emissions form an open arc can cause atmospheric oxygen in the vicinity of the arc to convert to:
a) ozone
b) carbon monoxide
c) carbon dioxide
d) argon
a)ozone
191
A potential source of poisonous chemical fumes when welding is:
a) inert shielding gases
b) chlorinated degreasing solvents
c) carbon dioxide extinguishers
d) anti-spatter novel sprays
b) chlorinated degreasing solvents
192
Define and describe the GMAW process in detail
GMAW is an arc welding process that uses an arc between a continuous filler metal electrode and the weld pool. The process uses shielding gas from an externally supplied source.
193
The gas metal arc welding process is also known as:
a) MIG welding
b) Flux cored arc welding
c) self-shielding process
d) shielded metal arc welding
a) MIG welding
194
```
GMAW is recommended for use on which of the following metals:
a) stainless steel
b) aluminum
c) copper alloys
d_ carbon and low alloy steels
e) all of the above
```
e) all of the above
195
Describe the operating principles of FCAW.
FCAW uses an arc established between a continuously fed consumable electrode and the work piece. Appropriate settings made by the operator maintain a constant burn-off rate of the wire electrode. Depending on the power source and wire drive system used, the arc length is maintained automatically . Shielding gas can be externally applied and/or obtained from a flux contained within the hollow electrode core. (depending on the type of flux cored wire used).
196
Self-shielded FCAW uses shielding gas generated from:
a) the base metal
b) an external source
c) the flux
d) a paste flu applied to the base metal before welding
c) the flux
197
What is the electrode extension range for self-shielded FCAW
For self-shielded electrodes, extensions range from 19m to 95mm (3.4" - 3 3/4")
198
The MCAW process uses the same equipment as which process?
a) SMAW
b) GTAW
c) FCAW
d) OAW
c) FCAW
199
List the basic equipment components always required for the set-up of a wire feed outfit
a) power source
b) wire feeder
c) gun and cable assembly
d) spooled filler wire
e) shielding gas and
f) gas control equipment
200
How are wire feed guns rated?
a) by voltage-carrying capacity
b) by physical size
c) by current-carrying capacity
d) by shielding gas flow rate
c) by current-carrying capacity
201
The major factor in choosing between an air-cooled or a water-cooled gun is the required:
a) shielding gas
b) current/voltage
c) joint design
d) base metal alloy
b) current/voltage
202
Welding power sources designed only for wire feed welding can be used for shielded metal arc welding (SMAW).
True - or - False
False
203
GMAW may be used in the semi-automatic or automatic operation modes.
True - or - False
True
204
What type of welding power source is most often used for GMAW?
constant voltage
205
Constant voltage (CV) machines produce a:
a) drooping volt-amp curve
b) rising volt-amp curve
c) Relatively flat volt-amp curve
d) constantly changing volt-amp curve
c) Relatively flat volt-amp curve
206
The power source best suited for the short-circuit mode of metal transfer is a:
a) rising arc voltage power source
b) constant voltage power source
c) constant current power source
d) constant amperage power source
b) constant voltage power source
207
What type of volt-amp curve does a constant current machine produce
a) flat
b) variable
c) rising
d) drooping
d) drooping
208
A welding machine that produces an almost horizontal output slope is a:
a) constant current machine
b) constant voltage machine
c) rising arc voltage machine
d) high amperage potential welding machine
b) constant voltage machine
209
List 3 advantages and 3 disadvantages of GMAW.
Advantages:
lower skill requirements than SMAW
excellent for light gauge metals
good arc control when working with poor fit-ups
less heat input means less distortion than SMAW
high production rates
no slag to remove, little or no post weld clean-up
Disadvantages:
special equipment required resulting in higher initial cost
equipment requires more maintenance and down time
lack of fusion can be a problem
cannot be used outdoors or in draft locations
high radiant energy requires protetction for the welder and others in the area
wire feeder must be in close proximity to welding.
210
One of the main advantages of metal core wires is:
a) lower cost than flux core wires
b) no external shielding gas is required
c) designed for use on conventional CC power sources
d) high deposition rates
d) high deposition rates
211
List 3 advantages and 3 disadvantages of FCAW.
Advantages:
The deposition rate is up to 4 times greater than with SMAW
There is high operating factor, so it is easily mechanized
the visible arc is easy to use
the weld metal deposits are high quality.
Disadvantages:
The equipment is more expensive to purchase than that needed for SMAW
More smoke and fumes are generated, which require suitable exhaust removal equipment
the wire feeder must be in close proximity to the welding
equipment is more complex than for SMAW so it requires more maintenance.
212
The powder in a MCAW wire consists mostly of:
a) flux
b) metal
c) slag formers
d) arc stabilizers
b) metal
213
What color should your protective clothing be when welding with GMAW and why?
Clothing should be dark to reduce reflected light radiation.
214
Is it advisable to weld with any arc welding process under wet weather conditions? Explain.
When you are exposed to wet weather conditions or standing on wet surfaces protect yourself from electrical shock hazards by wearing rubber boots with dry socks and rubber gloves.
215
The use of shielding gases when using wire feed processes increases the need for good:
ventilation.
216
Name two (2) toxic gases that can be created from the ultraviolet light produced from welding.
ozone, phosgene gas (from chlorinated hydrocarbon degreasers)
217
How can air quality be affected when welding with a process that uses a shielding gas?
Shielding gases in sufficient quantities displace enough air to render the work area oxygen deficient. Dizziness or euphoria is usually the first sign of oxygen deficiency. Precautions must always be taken to ensure adequate breathing air is supplied.
218
High ultraviolet radiation emissions from an open arc can cause atmospheric oxygen in the vicinity of the arc to convert to:
ozone.
219
A potential source of poisonous chemical fumes when welding is:
chlorinated degreasing solvents.
220
Define and describe the GMAW process in detail.
GMAW is an arc welding process that uses an arc between a continuous filler metal electrode and the weld pool. The process uses shielding gas from an externally supplied source.
221
The gas metal arc welding process is also known as:
MIG welding.
222
GMAW is recommended for use on which of the following metals?
all of the above
223
Describe the operating principles of FCAW.
FCAW uses an arc established between a continuously fed consumable electrode and the workpiece. Appropriate settings made by the operator maintain a constant burn-off rate of the wire electrode. Depending upon the power source and wire drive system used the arc length is maintained automatically. Shielding gas can be externally applied and/or obtained from a flux contained within the hollow electrode core (depending upon the type of flux cored wire used).
224
Self-shielded FCAW uses shielding gas generated from:
the flux.
225
What is the electrode extension range for self-shielded FCAW?
For self-shielded electrodes extensions range from 19 mm to 95 mm,.
226
The MCAW process uses the same equipment as which process?
FCAW
227
List the basic equipment components always required for the set-up of a wire feed outfit.
power source, wire feeder, gun and cable assembly, spooled filler wire, shielding gas, gas control equipment
228
How are wire feed guns rated?
by current-carrying capacity
229
The major factor in choosing between an air-cooled or a water-cooled gun is the required:
current/voltage.
230
Welding power sources designed only for wire feed welding can be used for shielded metal arc welding (SMAW).
false
231
GMAW may be used in the semi-automatic or automatic operation modes.
true
232
What type of welding power source is most often used for GMAW?
constant voltage
233
Constant voltage (CV) machines produce a:
relatively flat volt-amp curve.
234
The power source best suited for the short-circuit mode of metal transfer is a:
constant voltage power source.
235
What type of volt-amp curve does a constant current machine produce?
drooping
236
A welding machine that produces an almost horizontal output slope is a:
constant voltage machine
237
List three (3) advantages and three (3) disadvantage of GMAW.
Advantages: Any three of the following: lower skill requirements than SMAW, excellent for light gauge metals, good arc control when working with poor fit-ups, less heat input means less distortion than SMAW, high production rates, no slag to remove little or no post weld clean-up. Disadvantages: Any three of the following: special equipment required resulting in higher initial cost, equipment requires more maintenance and down time, lack of fusion can be a problem, cannot be used outdoors or in drafty locations, high radiant energy requires protection for the welder and others in the vicinity, wire feeder must be in close proximity to welding.
238
One of the main advantages of metal core wires is:
high deposition rates.
239
The powder in a MCAW wire consists mostly of:
metal
240
What is the primary purpose of wire feed welding?
Increasing production efficiency and quality in welding.
241
What are the safety measures to consider before starting wire feed welding?
Read operator's manuals and comply with safety recommendations.
242
What type of clothing should be worn during wire feed welding?
Dark, tight-knit, 100% cotton clothing.
243
Which shade of filter plate is recommended for GMAW welding at 60-160 amperes?
Shade #11.
244
What is the recommended gas for GMAW on aluminum?
Argon or helium.
245
What is the advantage of using a longer contact tip to work distance (CTTWD) in wire feed welding?
It provides better visibility and accessibility in tight spaces.
246
What is the main purpose of a drive roll in a wire feed welding system?
To feed the welding wire from the spool through the gun.
247
In GMAW, what does a 'push' gun angle typically do?
Directs the shielding gas ahead of the weld puddle.
248
What is the primary function of shielding gas in wire feed welding?
To protect the weld area from atmospheric contamination.
249
What is the effect of increasing wire feed speed in GMAW?
Increases the deposition rate and size of the weld bead.
250
What is the effect of electrode extension on voltage in wire feed welding?
Longer electrode extension increases the voltage.
251
In MIG welding, what is the function of the contact tip?
To transfer current to the wire and direct it into the weld pool.
252
Why is it important to properly maintain welding equipment?
To ensure safety, efficiency, and quality of welds.
253
What is a common cause of porosity in welds?
Contamination in the weld area or shielding gas problems.
254
What type of power source is typically used in wire feed welding?
Constant voltage (CV) power source.
255
What is the primary advantage of using flux-cored wire in welding?
It allows for higher deposition rates and better penetration.
256
How does wire diameter affect welding?
Larger diameters allow for higher current and increased deposition rate.
257
What is the purpose of a gas diffuser in a MIG welding torch?
To distribute shielding gas evenly around the welding arc.
258
What is the primary cause of spatter in MIG welding?
Incorrect voltage or wire feed speed settings.
259
In wire feed welding, what is the function of the drive roll tension?
To ensure consistent feeding of the welding wire.
260
What is the effect of using too high a wire feed speed in MIG welding?
It can lead to excessive spatter and poor penetration.
261
What is the recommended angle for holding a MIG welding gun for most applications?
10 to 15 degrees from vertical.
262
What is the primary function of a liner in a MIG welding gun?
To guide the welding wire from the feed unit to the contact tip.
263
In wire feed welding, what is the purpose of the polarity setting?
To control the direction of current flow, affecting heat input and bead shape.
264
How does stick-out length affect MIG welding?
Longer stick-out reduces heat input and narrows the weld bead.
265
What is a key advantage of using a synergic MIG welding machine?
It automatically adjusts wire feed speed to match the set voltage.
266
What is the primary purpose of a nozzle in MIG welding?
To direct the flow of shielding gas over the weld pool.
267
In MIG welding, what is typically used as a shielding gas for welding steel?
A mixture of argon and carbon dioxide.
268
What is the consequence of using an incorrect shielding gas mixture in MIG welding?
Poor weld quality and possible contamination.
269
How does outdoor welding affect the choice of welding process in wire feed welding?
Flux-cored welding is preferred due to its resistance to wind.
270
What is a typical symptom of having too low a voltage setting in MIG welding?
Lack of penetration and a narrow, rope-like bead appearance.
271
Why is wire cleanliness important in wire feed welding?
To prevent contamination of the weld and ensure smooth wire feeding.
272
What is the effect of a high electrode stick-out in MIG welding?
Decreased current density and a cooler weld puddle.
273
In MIG welding, what does the term 'duty cycle' refer to?
The amount of time a welder can operate at a given output without overheating.
274
What is the impact of using a smaller diameter wire in MIG welding?
Suitable for lower current welding and thinner materials.
275
What role does the tension setting on a wire feeder play in MIG welding?
It ensures stable wire feeding without slippage or wire crush.
276
Why is it important to have the correct torch angle in MIG welding?
To ensure proper gas coverage and weld bead formation.
277
What is the primary purpose of inter-pass temperature control in welding?
To control the microstructure and mechanical properties of the weld.
278
What is the consequence of improper shielding gas flow rate in MIG welding?
It can lead to porosity and lack of shielding from atmospheric gases.
279
What is a common effect of welding with an excessively long arc in MIG welding?
Increased spatter and a lack of control over the weld pool.
280
Why was gas metal arc welding (GMAW) developed?
To eliminate the use of fluxes when welding aluminum and magnesium alloys.
281
What is an advantage of using the flux cored arc welding (FCAW) process?
High weld metal deposition rates.
282
Which type of power source is recommended for wire feed welding processes?
Constant voltage (CV) power source.
283
What is a key characteristic of metal-cored arc welding (MCAW)?
Uses a tubular wire electrode with a metal outer sheath and a core of powdered materials.
284
What is the primary function of the shielding gas in wire feed welding processes?
To protect the molten weld metal from atmospheric contamination.
285
What is the main hazard associated with electrical equipment in wire feed welding?
Electrical shock due to improper grounding.
286
What type of protective clothing is recommended for wire feed welding?
Dark, tight-knit, 100% cotton clothing.
287
What shade of filter plate is suggested for welding in the range of 60-160 amperes in GMAW?
Shade #11.
288
What is the main function of flux in self-shielded FCAW?
Generating shielding gases to protect the weld.
289
What are the primary characteristics of a CV power source in wire feed welding?
Maintains arc voltage during current surges and adjusts current flow automatically.
290
How does wire feed speed affect the welding process in CV welding?
Controls amperage; higher feed speed increases amperage.
291
What is a disadvantage of GMAW compared to other welding processes?
Special equipment that is more complex and costly to purchase.
292
Why is FCAW favored for high weld metal deposition rates?
It provides high quality weld metal at lower costs and less effort than SMAW.
293
What is a key advantage of MCAW over other welding processes?
High quality weld metal deposits and no slag or interpass cleaning.
294
What type of cooling system is commonly required in high current applications of wire feed welding?
Water cooling system.
295
What is the recommended amperage range for welding power sources in wire feed processes for light duty work?
Less than 100 amperes.
296
What does a duty cycle rating of 60% at 300 amps mean for a welding power source?
The machine can operate at 300 amps for 6 minutes out of 10 minutes of elapsed time.
297
What hazard is associated with the intense ultraviolet light radiation produced by the electric arc in wire feed welding?
Ozone and other harmful fumes may become toxic.
298
What are the essential components of the basic equipment required for wire feed welding?
Welding power source, wire feeder, electrode holder (welding gun), spooled filler wire, shielding gas, regulator/flowmeter, and cooling system (if required).
299
What is the function of the drive roll system in wire feed welding?
To push the wire electrode forward through the cable assembly and gun to the weld zone.
300
What is the primary reason for using hearing protection during wire feed welding?
To avoid hearing loss in high noise level environments.
301
How is the electrode for GMAW commonly supplied?
Continuously fed from a spool.
302
What is the primary role of deoxidizers in gas-shielded FCAW?
To combine with any small amounts of oxygen produced during welding.
303
What is an advantage of self-shielded FCAW in field fabrications?
Better tolerance of windy conditions.
304
What is the difference in the shielding method between gas-shielded and self-shielded FCAW?
Gas-shielded uses external gas, while self-shielded generates its own shielding from the flux.
305
What is the effect of increasing electrode extension in self-shielded FCAW?
Results in a narrow bead with shallow penetration.
306
What is a typical position of spray transfer in MCAW?
Welding in the flat or horizontal position.
307
What is the primary advantage of using a CV power source in wire feed welding?
It maintains arc voltage during current surges and smoothens short-circuit transitions.
308
What type of welding operation is MCAW particularly suitable for?
High-production automatic welding.
309
What is a disadvantage of using MCAW for outdoor welding?
Requires protection from strong drafts that can blow the shielding gas away from the weld zone.
310
The composition of the base metal is the major factor to consider when selecting:
a) a shielding gas
b) filler materials
c) a power source
d) current settings
b) filler materials
311
Which organizations have written specifications for wire feed filler metals?
a) WCB and CSA
b) CWB and AWS
c) ASME and CWB
d) AWS and CSA
d) AWS and CSA
312
When added to ER70S-2 silicon, aluminum and manganese are used as:
a) stabilizers
b) deoxidizers
c) lubricators
d) indicators
b)deoxidizers
313
Cast refers to the
a) circle formed by one wrap of the wire
b) method of forming the wire.
c) natural twisting action of the wire during forming
d) ability of the wire to be pushed through a plastic liner.
a) circle formed by one wrap of the wire
314
Describe the helix of a wire and the effect that it may have on welding
Helix is the result of a natural twisting action of the wire during forming. Can cause the wire to wander, the arc becomes unstable and the corkscrew effect causes a change in the direction of wire feed
315
```
Interpret the B-G 49A 3 C G2 electrode classification:
B
G
49A
3
C
G2
```
B - indicates the electrode is classified by tensile strength and with an average 27-joule impact test
G - designates using a gas shielded metal arc welding process
49A - refers to minimum tensile strength of the deposited weld metal in the as-welded condition in MPa divided by 10
3 indicates a minimum temperature of -30 for impact tests
C - designates CO2 sheilding gas
G2 - is a specific chemical analysis of this designated filler metal.
316
When wires are packaged in sealed containers, it mainly protects them from:
a) smoke and fumes
b) moisture contamination
c) transportation damage
d) ultraviolet light radiation.
b) moisture contamination
317
Improperly cleaned wires most often produce welds with:
a) wagon tracks
b) cold lapping
c) slag inclusions
d) porosity
d) porosity
318
Filler metals containing additional deoxidizers are intended for use on:
a) moderately rusty low-carbon steels
b) alloy steels containing chromium
c) non-ferrous metals
d) stainless steels with more than 18% chromium
a) moderately rusty low-carbon steels
319
What are the primary functions of the flux in FCAW wires?
to provide dioxides and scavengers to remove impurities
to form a slag cover to protect weld metal from atmosphere contamination
to act as an arc stabilizer by providing an electric path
to add alloying elements to provide the mechanical, metallurgical and corrosion resistance properties
320
```
Explain the E491T-9CH FCAW wire classification:
E
49
1
T
9
CH
```
E - indicates electrode
49 - indicates tensile strength measured in megapascal divided by 10
1 - refers to all-position application
T - indicates tubular wire
9 - indicates the slag system, current, polarity and shielding gas
CH - refers to controlled Hydrogen
321
What does the "G" stand for in the CSA FCAW electrode classification E492T-G?
a) gas shielded
b) general classification for electrodes not covered under any other classification
c) for use on Class G secondary containment vessels for nuclear service
d) general purpose electrode for use on carbon and low-alloy steels
b) general classification for electrodes not covered under any other classification
322
Name two (2) FCAW wires that can be used without external gas shielding
Any of the following is correct:
| EXXXT-3, -4, -6, -10, -11, -13, or -14
323
In the GMAW short-circuiting transfer mode, metal is transferred.
a) when the electrode comes in contact with the weld pool
b) as large globules released from the filler wire
c) as fine droplets moving axially across the open arc
d) when a high current arc pulses ejects metal from the filler wire.
a) when the electrode comes in contact with the weld pool
324
Very fine droplets of metal transferred across the arc in an axial fashion describes what mode of metal transfer?
a) short-circuiting
b) globular
c) spray
d) pulsed spray
c) spray
325
Which GMAW mode of metal transfer is best suited for welding thin metals?
a) short-circuiting arc transfer
b) globular spray arc transfer
c) spray arc transfer
d) pulsed arc transfer
a) short-circuiting arc transfer
326
Which MCAW mode of metal transfer is best suited for welding thin metals?
a) short-circuiting arc transfer
b) globular spray arc transfer
c) spray arc transfer
d) pulsed arc transfer
d) pulsed arc transfer
327
Where are the drive rolls located on a pull-type drive system?
on the gun unit
328
A pull type welding gun is designed to be used with:
a) hard wire
b) soft wire
c) solid core wires
d) tubular wires
b) soft wire
329
What type of wire drive system allows greater machine-to-work distances?
a) push system
b) push-pull system
c) 2 drive roll system
d) 4 drive roll system
b) push-pull system
330
When using GMAW on mild steel, the most popular type of wire feed system is a:
a) pull system
b) push system
c) push-pull system
d) spool-on-gun system
b) push system
331
The welding cable assembly is constructed to:
a) supply current from the machine to the electrode holder
b) supply current, gas and wire to the welding gun
c) complete an electrical circuit between the machine and the work
d) supply current from the wall receptacle to the welding machine.
c) complete an electrical circuit between the machine and the work
332
What types of conduit liner are most often used with soft wires:
a)
b)
c)
a) nylon
b) teflon
c) plastic liner
333
What is generally the longest practical feed cable used with small diameter wire and push feed system?
The maximum recommended distance for pushing is 4.5M (15 feet)
334
What is the main purpose of the contact tube?
a) it transfers the welding current to the filler wire
b) it prevents pre-ingition of the arc in the nozzle
c) it directs shielding gas to the weld zone
d) it acts as an insulator between the wire and the gun
a) it transfers the welding current to the filler wire
335
What is the purpose of a gas nozzle?
The nozzle directs shielding gas onto the weld zone to prevent atmospheric contamination
336
state the primary purpose of a shielding gas
The primary purpose of a shielding gas is to prevent the molten weld metal from absorbing elements from atmospheric air such as oxygen and nitrogen.
337
when oxygen and nitrogen from the atmosphere become mixed in the molten weld metal, they:
a) increase the tensile strength of the weld metal
b) form harmful oxides and nitrides in the weld metal
c) help increase the ductility of the weld zone.
d) increase the fracture toughness of the weld metal
b) form harmful oxides and nitrides in the weld metal
338
Which gas is the lightest??
a) hydrogen
b) argon
c) helium
d) oxygen
a) hydrogen
339
Argon and helium are:
a) reactive gases
b) inert gases
c) ionized gases
d) non-conductive gases
b) inert gases
340
Where would you use pre argon shielding gas with GMAW
welding non-ferrous materials such as aluminum, magnesium and their alloys.
341
What is carbon dioxide gas primarily used for?
welding mild and low alloy steels
342
List three factors to consider when selecting a gas for GMAW
```
base metal type and thickness
filler metal type
welding process
cost of gas
width and depth of penetration
desired bead shape
importance of spatter and post-weld cleanup
joint design and positioning
jigging and fixturing
type of metal transfer
```
343
Is carbon dioxide a monatomic gas or compound gas?
compound gas
344
A characteristic of carbon dioxide shielding gas used with short-circuiting metal transfer is:
a) a deep, narrow penetration pattern
b) high weld metal loss in the form of spatter
c) excellent surface cleaning action
d) a shallow, wider penetration pattern
b) high weld metal loss in the form of spatter
345
Which modes of metal transfer are possible with GMAW using 0.9mm (.035") mild steel wire and carbon dioxide shielding gas?
a) spray and globular
b) globular and short circuiting
c) short circuiting and pulse spray
d) spray and pulse spray
b) globular and short circuiting
346
The addition of oxygen to argon causes the temperature of the molten metal to:
a) decrease
b) increase
c) stabilize
d) oxidize
b) increase
347
Compared to Co2, argon is an excellent shielding for GMAW because it promotes the use of:
a) spray metal transfer
b) globular metal transfer
c) short-circuit metal transfer
d) low gas flow rates in globular transfer
a) spray metal transfer
348
When 1%-9% oxygen is added to argon shielding gas it is to:
a) reduce spatter
b) increase the deposition rate
c) improve wetting action
d) reduce welding costs
c) improve wetting action
349
Which of the following gas mixes tends to produce low-crowned weld beads on stainless steels?
a) helium-carbon dioxide
b) argon-carbon dioxide
c) nitrogen-carbon dioxide
d) argon - helium -carbon dioxide
d) argon - helium -carbon dioxide
350
What is an advantage of using a 75% argon + 25% CO2 gas mix on carbon steel?
a) lower cost
b) deeper penetration
c) improved arc characteristics
d) Argon is less dangerous when used in confined spaces
c) improved arc characteristics
351
Name 4 factors that can influence gas flow rates.
```
type of shielding gas used
type and thickness of the material
position of the welding
joint design
diameter of wire
size and shape of gas diffuser and nozzle
size of weld pool
presence of drafts or air currents
design of welding fixtures
```
352
Which gas is generally used for shielding when using MCAW?
a) argon only
b) no gas shielding with certain wires
c) oxygen only
d) a mixture of argon and carbon dioxide
a) argon only
353
The purpose of a flowmeter is to:
a) maintain a constant flow rate of gas
b) maintain a constant pressure of gas
c) maintain a post flow of gas
d) reduce source pressure to working pressure
a) maintain a constant flow rate of gas
354
The preferred method of measuring shielding gas supply is:
a) kilograms per square centimetre
b) kilograms per minute
c) litres per minute
d) surface metres per minute
c) litres per minute
355
Flowmeters are calibrated to indicate the:
a) volume of shielding gas supplied
b) capacity of the shielding gas cylinder
c) pressure of shielding gas supplied
d) density of shielding gas supplied
a) volume of shielding gas supplied
356
What can be done to avoid regular freeze-up when using Co2 gas?
a) lower the gas flow rate
b) increase the working pressure of the regulator
c) cover the regulator body with insulating material
d) install a line heater or manifold system
d) install a line heater or manifold system
357
What must be considered before using a mini-bulk system?
a) cylinder rental costs
b) frequency of use
c) cannot be used with argon gas
d) availability of an external evaporator unit.
b) frequency of use
358
Ideally, a welding power source should be located in:
a) confined area at floor level
b) an uncluttered, well-ventilated area of the shop.
c) the centre area of the shop
d) an unventilated, specially enclosed mezzanine area
b) an uncluttered, well-ventilated area of the shop.
359
It is important to have wire guides in alignment with drive rolls on the wire drive unit. Explain your answer.
True or Flase
True: Misalignment can cause an unnecessary drag on the wire and lead to feeding difficulties.
360
The installation of a power source must be done in accordance with local __ codes and to be completed by ___ personnel.
Electrical and Qualified
361
To obtain an accurate reading from a flowmeter, it must be mounted in the ___ position.
a) vertical
b) overhead
c) horizontal
d) flat
a)vertical
362
Why must you ensure that all electrical fittings on the welding leads have a tight connection?
The connections are to be tight to prevent overheating of the cables and power source.
363
The wire spool hub should be adjusted in order to:
a) prevent the unwinding of the wire spool
b) feed freely, yet prevent a backlash of wire when feeding is stopped
c) allow the wire to be removed without restriction
d) run the wire from the bottom of the roll only
b) feed freely, yet prevent a backlash of wire when feeding is stopped
364
How is penetration affected when stickup is increased?
a) penetration increases
b) penetration is not affected
c) penetration is decreased
d) only penetration on groove welds is affected.
c) penetration is decreased
365
Changing the gun inclination:
a) changes the penetration of the weld
b) has no effect on the weld
c) causes the wire to pile up at the drive rolls
d) causes the wire to feed unevenly.
a) changes the penetration of the weld
366
Describe how BMAW equipment is likely to behave when the contact tip is worn out.
With extended use, the wire wears the contact tub orifice to an oval shape.. This causes the wire to slide easier but the transfer of current is not as efficient. arcing in the contact tube may occur, which fuses the wire ofr causes erratic wire feeding.
367
Excessive spatter buildup in the gun nozzle can cause:
a) undercut at the weld edges
b) excessive metal flow
c) an increase in stickout
d) inadequate gas coverage
d) inadequate gas coverage
368
Moisture and dirt on the surface of the wire electrode is likely to cause:
a) porosity
b) cold lap
c) electrical shock
d) post-weld stress cracking
a) porosity
369
Excessive drag from a dirty liner is likely to cause:
a) porosity and cracking in the weld
b) slippage or bird nesting at the drive rolls
c) excessive undercut or lack of fusion
d) damage to the liner and contact tip
b) slippage or bird nesting at the drive rolls
370
When arc hunting occurs, the problem is likely in the:
a) wire feeder drive motor or the motor gearbox
b) wire speed control or the voltage control
c) drive rolls or the remote control switch
d) contact tip or the conduit liner
d) contact tip or the conduit liner
371
Stubbing is caused by excessive:
a) inductance
b) voltage
c) resistance
d) wire feed speed
d) wire feed speed
372
List four (4) causes of porosity:
any 4: lack of shielding gas coverage, wet CO2 gas, excessive tip to work distance, excessive travel speed, excessive gas flow rates, contamination on the base material, excessive current or voltage, incorrect wire chemical analysis, loose or off-centre gas nozzle.
373
What is the major cause of cold lap when using GMAW short-circuit metal transfer
slow travel with a large bead
374
free card!
free card!
375
'what are the 3 causes of whiskers:
too large a root opening, root face that is too thin, a too fast travel speed, excessive wire feed speed, improper gun manipulation
376
How often should you clean the conduit liner of a wire drive set-up?
a) once per day
b) after 20 hours of operations
c) every time the wire spool is changed
d) the liner should never need cleaning
c) every time the wire spool is changed
377
What should you do when the liner becomes kinked?
a) replace it
b) squeeze itin a vice until it straightens out and place it back into service.
c) cut the kinked portion out, rejoin using manufacturers-approved fittings and place it back into service
d) stretch the liner until it straightens out and place it back into service.
a) replace it
378
List 6 things you should check for if the arc becomes unstable.
worn or dirty contact tip, dirty liner, wire hang-up at spool, electrical stickout, gas supply, loose work lead connection, sharp bends in the cable assembly, incorrect size of liner
excessive drive roll pressure, excessive spatter build up, too much wire cast or helix.
379
What part of the GMAW system requires the most ongoing maintenance.
a) power source
b) regulator / flowmeter
c) wire feeder
d) gun and cable assembly
d) gun and cable assembly
380
what can result from a poor work lead connection?
a) overheating of the power source main transformer coil
b) erratic wire feed speeds
c) excessive penetration
d) an unstable arc.
d) an unstable arc.
381
List 4 things you should check for when you see porosity in the weld when using GMAW
check for empty cylinder, spatter build-up in the gs nozzle, obstructions in the orifices of the gas diffuser, kinked disconnected or gas line blockages, malfunctioning gas solenoid
382
What should you check for when adjusting from short-circuiting to spray transfer with GMAW?
a) ensure wire feeder drive motor is well lubricated
b) make sure the power source has a high frequency current control
c) make sure the gun is rated to handle higher current.s
d) make sure the wire electrode is at least 0.9mm minimum diameter
c) make sure the gun is rated to handle higher current.s
383
Describe the 6 items you should include on an ongoing maintenance schedule and checklist for wire feed equipment.
manufacturers recommendations
arrange for routine maintenance
check the environment around the equipment
perhaps recommend additional equipment to keep electrodes clean.
training program / checklist
logbook to record repairs and maintenance.
384
Describe the procedure for changing a roll of wire on a GMAW system.
de-energize the power source.
remove empty roll
remove or relieve tension on idler rolls
remove contact tip, pull remaining wire through cable assembly.
place new wire spool on hub, check hub brake tension
feed wire through drive roll assembly and into the liner
replace idler rolls, set minimum tension
re-energize power source/wire feeder; feed wire to gun
replace contact tip, check and set drive roll pressure.
385
How should you check for correct drive roll pressure on a GMAW set-up?
drive roll pressure should be set to manufacture's recommendation and the tension should be sufficient to drive the wire without undue deformation or scarring of the wire surface.
386
What part of FCAW equipment requires the most ongoing maintenance?
a) the power source
b) the gas solenoid
c) the gun and cable assembly
d) the wire feeder drive motor
c) the gun and cable assembly
387
Name 3 causes of porosity with FCAW.
```
lack of shielding gas
improper gun inclination
air drafts
contact tube not centred
dirty base material
excessive wire feed speed
moisture in the shielding gas
contaminated electrode.
```
388
What are two advantages of using more than one process to complete a weld?
a. the cost of welding is reduced in many cases if the advantages of each process are applied to the fabrication.
b. it increases production while maintaining the high quality weld material.
389
What is the root pass, and where is it located on a VEE groove joint preparation?
The root pass is the first penetrating baed. it is placed at the root of the joint.
390
The electrode wire type is selected to match the:
a) shielding gas
b) welder's preference
c) thickness of the parent metal
d) chemical and mechanical properties of the base metal.
d) chemical and mechanical properties of the base metal.
391
What is the recommended electrode angle on a groove weld?
a) 1/4 of the included angle
b) 1/2 of the included angle
c) 3/4 of the included angle
d) the same as the included angle
b) 1/2 of the included angle
392
What is the recommended inclination for the FCAW fill passes in the 1G position?
a) forehand 10degree - 30 degree
b) forehand 90 degree
c) backhand 0 degree -10 degree
d) backhand 90 degree
c) backhand 0 degree -10 degree
393
What is the recommended inclination for the MCAW fill/cap passes in the 2G position?
a) forehand 0 degree - 10 degree
b) forehand 45 degree
c) backhand 45 degree
d) backhand 20 degree - 30 degree
a) forehand 0 degree - 10 degree
394
What mode of metal transfer is used with FCAW?
a) pulsed spray
b) spray
c) short circuit
d) globular
d) globular
395
What mode of metal transfer is used with MCAW in the 3G position?
a) pulsed spray
b) spray
c) short circuit
d) globular
a)pulsed spray
396
Name four (4) factors that can influence for meter settings with GMAW and FCAW
Any 4 of the following is correct:
a. type and thickness of material to be welded
b. position of weld
c. type of joint
d. diameter of wire
e. puddle size
f. air movement around the weld zone
g. gun inclination
h. nozzle-to-work distance
397
List four (4) GMAW welding parameters.
Any 4 of the following is correct:
a. shielding gas type
b. shielding fas flow rate
c. wire speed setting
d. voltage setting
e. transfer mode.
398
What type of equipment set-up is recommended for high production welding using GMAW and FCAW or MCAW?
a) constant current power source, dual drive roll wire feeder
b) constant voltage power source, dual drive roll wire feeder
c) constant current power source, single drive roll wire feeder
d) constant voltage power source, single drive roll wire feeder
b)constant voltage power source, dual drive roll wire feeder
399
What type of interpose cleaning is normally required between the GMAW root pass and FCAW or MCAW deposited weld metal?
a) grind to clean weld metal before proceeding
b) de-slag before proceeding
c) hand brush before proceeding
d) interpose cleaning is not normally required.
d) interpose cleaning is not normally required.
400
Explain why it is important to always start at the bottom and layer upwards when placing stinger bead fill and cap passes in the 2G position.
This prevents weld metal from rolling down and causing overlap or lack of fusion.
401
SAW stands for?
Submerged arc welding sometimes called sub-arc
402
Describe and explain the principles of operation of saw
submerged arc welding is an arc welding process in which metals are joined using an electric arc established between a continuously fed bare metal consumable electrode or electrodes and the work. Shielding is provided by a granular, fusible Flux material usually brought to the work area using flux feed system
403
What positions can SAW be used in
Flat and horizontal
404
name four types of materials that saw can be used on
carbon alloy steels stainless steels and Nickel alloys
405
List the 7 basic equipment components required for saw
1 the weld power source provides welding current
2 the welding head assembly includes the wire feeder, torch assembly and travel carriage
3 the fixtures and positioners position the work pice for the welder
4 spooled filler wire provides filler metal for the weld
5 The flux provides shelving, shapes the beed and allows alloys to be added
6 The flux feed and recovery equipment conveys flux to the weld zone and collects unused flux
7 the work lead connection completes the welding current circuit to the work pice
406
What are the advantages of using a screw type work clamp
It minimizes heat build up
407
What types of output slope do saw power sources use
CC and CV
408
what duty cycle rating is recommended for most saw power sources
100%
409
Saw may be used in the semi-automatic operation modes
True
410
what is the advantage of using an ac power source for saw
it minimizes are blow with multiple wire set ups
411
what will usually result if the drive roll pressure is set to low
the wire electrode will slip and feed erratically
412
how will the arc react if the flux layer is to shallow
the weld will be flashing and will likely result in prosperity
413
which is helix
the space between two unrestrained loops of wire
414
What types of drive roll systems are normally used with SAW
knurled or v groove
415
What type of wire feed set up is used with cv power sources
constant speed
416
List the 6 main SAW operating Variables and there effects
1 Amperage controls penetration and rate of deposit
2 voltage affects arc length
3 travel speed affects the penetration and the weld beed profile
4 Electrode diameter has a direct effect on the weld beed shape and depth
5 Electrode extension affects rate of metal deposition and affects flux layer depth
6 width and depth of flux layer has influence on arc actions bead appearance and weld metal soundness
417
Interpret the AWS Classification for the F7AZ-ELI2K
```
1 designates as a flux
2 minimum tensile strength is megapascals x 10 000 psi ( 70 000 psi)
3 as- welded condition
4 no impact properties are specified
5 electrode
6 medium manganese content
7 nominal carbon content (0.12%)
8 made from fully killed steel
```
418
Interpret the CSA Classification for the F49AZ-EMI4K
```
1 designates as a flux
2 minimum tensile strength is megapascals x 10 ( 490 MaP)
3 as- welded condition
4 no impact properties are specified
5 electrode
6 medium manganese content
7 nominal carbon content (0.14%)
8 made from fully killed steel
```
419
Which type of Flux can be re-used
fused
420
Which type of saw flux is generally used for the addition of alloying elements
Active flux
421
Is it necessary to remove scale and rust from the base metal? explain your answer. yes or no
yes - remove excess crap to prevent contamination of the weld zone and reduce harmful fumes.
422
Describe a stringer bead
a single pass of weld made with no side-to-side motion. the only movement of the electrode is in the direction of travel.
423
how should you lay beads when surface welding for buildup work?
a) space them so they are 3.2mm apart
b) blend them together so that they form a solid layer of weld metal
c) space them so they are 6.4mm apart
d) the toe on one bead should meet the toe of the next bead.
b) blend them together so that they form a solid layer of weld metal
424
in what positions can you do surface welding with GMAW using short-circuit metal transfer.
a) flat position only
b) flat and horizontal positions only
c) all positions except vertical
d) all postions
d) all postions
425
what is the normal electrode angle when doing single-pass 1F welds
a) 90degrees to the joint angle
b) 45 degrees to the joint angle
c) 15 - 20 degrees to the joint angle
d) 180 relative to the welders postion
b) 45 degrees to the joint angle
426
How is work positioned for a 1 F Tee joint?
a) 90 and 0 on the horizontal plane
b) 180 and 360 to the horizontal plane
c) 120 and 60 to the horizontal plane
d) each member at 45 to the horizontal plane
d) each member at 45 to the horizontal plane
427
Given a choice, what position should you use to achieve the most productive fillet welding?
a) 4F
b) 1G
c) 1F
d) 6F
c)1F
428
What is the recommended gun angle for the first pass of a 2F weld on 10mm material with three stinger bead passes specified?
a) 90 to the vertical plane
b) 90 to the horizontal plane
c) 45 to the vertical and horizontal plane
d) 270 to the welder's initial position prior to an arc ignition.
c) 45 to the vertical and horizontal plane
429
What type of bead is usually used for the cover pass on a 3F weld on 10mm material?
a) weave bead
b) stringer bead
c) modified lazy L bead
d) long dwell crown bead.
a) weave bead
430
What is the likely weld progression for the first pass on a 3F weld on 10mm material?
a) uphill
b) downhill
c) sleight of hand
d) back step
b)downhill
431
What joint configuration is generally used for a 1G weld with a VEE groove preparation on 10mm material?
a) 4mm root face, 2.5 mm gap
b) 4mm gap, 1.6mm root face
c) 4mm root face, 4mm gap
d) 1.6mm gap, 3.2mm root face
b) 4mm gap, 1.6mm root face
432
How many passes are generally used for a 1G weld with a Vee grove preparation on 10mm material using 0.9mm wire?
a) 3 or 4 passes
b) 5 or 6 passes
c) 6 or 7 passes
d) 1 or 2 passes
a) 3 or 4 passes
433
What procedure is recommended to complete a 2G weld with a Vee groove preparation on 10mm material.
a) completely fill the joint with one large pass.
b) use one root bead followed by one weave bead cover pass
c) use stringer beads on all fill and cover passes, working from the bottom upwards.
d) use stringer Beads on all fill and coverer passes, working from top downwards.
c) use stringer beads on all fill and cover passes, working from the bottom upwards.
434
The number and letter nominations of 1F and 2G represent:
a) the type of filler wire and shielding fas to be used for the project
b) the position and type of weld to be completed.
c) the joint design and configuration
d) the welding process and joint design to be used.
b) the position and type of weld to be completed.
435
A WPS allows minor changes in the welding voltage and amperage. True or False.
True
436
The root pass is becoming excessively heavy as you weld a pipe in the 1GR position. What corrective action should you take while welding?
a) work closer to the 12o'clock position of the pipe?
b) work closer to the vertical position, progressing downhill
c) slow the travel speed across the centre of the weld.
d) incline the electrode more into the direction of travel.
b) work closer to the vertical position, progressing downhill
437
Single VEE preparations on pipe generally have an included angle within the range of:
a) 22.5 to 30
b) 30 to 45
c) 45 to 60
d) 60 to 75
d) 60 to 75
438
Do all tack welds become an integral part of the weld?
No. bridging tacks must be removed as welding progresses.
439
Where should the four tack welds be located on a 150mm pipe to be welded in the 5G position?
12, 3,6,9 o'clock positions.
440
What is the maximum length of tack welds used for joining 150mm sch. 80 pipe?
3/4"
441
If a pipe is fit so that the gap is not uniform, at what location should the widest portion of the gap be placed in preparation for welding?
The widest gap should be placed at or near the last quarter of the joint to be welded
442
on an 80mm sch. 40 pipe; what is the minimum number and length of tacks required?
a) 2 tacks 25.4mm long
b) 2 tacks at 12.7mm long
c) 3 tacks at 12.7mm long
d) 4 tacks at 25.4 mm long
c) 3 tacks at 12.7mm long
443
What is the root gap between the test plates for CWB 2Gtest weld.?
a) 6.4mm
b) 8mm
c) 10mm
d) 13mm
b)8mm
444
How far are the stops. starts from the edge of the CWB 4GF test plate?
a) 13mm
b) 19mm
c) 25.4mm
d) 38mm
d)38mm
445
Is it necessary to remove oil and paint from the base metal?
Yes. remove the crap to prevent contamination of the weld and reduce any harmful fumes that may be produced.
446
Describe how to execute a weave bead?
A weave bead is completed with a side to side motion while movement in the direction of travel is taking place.
447
Changing the angle of the electrode holder in relation to the joint:
a) changes the voltage
b) has noe effect on the weld
c) causes the weld profile to change.
d) cause the wire to feed unevenly.
c) causes the weld profile to change.
448
The number/ letter combination 3GF:
a) represent the type of filler wire and shielding gas to be used for the project
b) indicates the vertical position with a combination groove and fillet weld
c) requires the joint to be completed in three passes and ground flat
d) indicates that a mix of three shielding gases is required.
b) indicates the vertical position with a combination groove and fillet weld
449
free card!
free card!
450
Does welding position have any influence on FCAW machine settings?
Yes. Machine settings in the vertical position are likely to be lower than the same weld in the flat position.
451
How would you likely do surface welding on a vertical surface using FCAW?
a) travel horizontally starting from the top of the surface
b) travel horizontally starting from the bottom of the surface
c) travel vertically uphill starting from the bottom left-handed corner
d) travel vertically downhill starting from the top right-hand corner
b) travel horizontally starting from the bottom of the surface
452
what is the main advantage of using FCAW over GMAW?
a) deposition rates are higher
b) equipment is less expensive
c) wire is less expensive
d) welding current requirements are lower
a) deposition rates are higher
453
when mulit-pass welding with FCAW, is it necessary to remove the slag between passes?
Yes - the slag could get trapped between the passes
454
Why are back-up bars often employed on FCAW groove welds?
a) open gaps cause potentially damaging current surges in the main transformer coils of the power source.
b) FCAW root beads in open gaps are characterized by lack of fusion
c) loss of gas coverage is a problem with FCAW in an open gap
d) it is difficult to control penetration in an open gap with FCAW
d) it is difficult to control penetration in an open gap with FCAW
455
How much electrode stickout is recommended when using gas shielded FCAW with 1.2mm wire?
a) 3.2mm -12 mm
b) 10mm - 19mm
c) 20mm- 40mm
d) 2.4mm-3.2mm
b) 10mm - 19mm
456
When welding the fill passes with FCAW on a 1GF using 10mm material, what should the gun angle be in relation to the joint?
a) 10 degree towards the welder
b) one-half the angle formed at the centre of the bead to be placed
c) any angle that is comfortable to the welder.
d) 10 degree away from the welder
b) one-half the angle formed at the centre of the bead to be placed
457
Most FCAW welding techniques use an electrode inclination of:
a) 10 - 30 forehand
b) 40 - 80 forehand
c) 10 - 30 backhand
d) 0 or dead square
c) 10 - 30 backhand
458
What must you be careful of when placing weave beads in a large grove weld?
a) slag entrapment
b) overheating the power source
c) overheating the gun nozzle
d) running out of wire
a) slag entrapment
459
Name 3 safety consideration you should make before beginning a weld.
1. eye and skin protection
2. ventilation
3. set up screens and warning signs
460
What type of technique would you likely use on a 3F weld Ising 10mm material when doing the cover pass?
a) uphill stringer beads
b) uphill weave bead
c) downhill stringer beads
d) downhill weave bead
b) uphill weave bead
461
List the 9 items on the start up checklist of any new project?
a) check helmet for correct shade filter plate.
b) check all exposed skin
c) check wire size and type for suitability to parent metal and position of weld
d) check drive roll pressure
e) check condition of contact tub, gun nozzle, and trigger switch.
f) check shielding gas supply and turn on and set flow rate.
g) check operating parameters on welding procedure
h) energize power source / wire feeder
i) run several beads on scarp metal to fine tune voltage and wire speed.
462
Where is the fillet weld in a CSA 2G test assembly locate?
a) against the bevelled edge
b) against the square edge
c) there is no fillet weld in a 2G test assembly
d) the fillet weld is the cover pass.
c) there is no fillet weld in a 2G test assembly
463
What are the three important dimensions for pipe?
A) outside diameter
b) inside diameter
c) wall thickness
464
Are the following statements regarding pipe true or false?
a) OD is identically to the nominal size for all pipe
b) nominal size is the approximate ID of standard wall pipe
c) pipe schedules are an indication of wall thickness
d) the terms tube and pipe are interchangeable
e) OD of a pipe remains the same regardless of its schedule
f) Pipe 350 mm and larger is identified by OD
a) false
b) true
c) true
d) false
e) true
f) true
465
What does the term schedule refer to as it relates to pipe?
a) the pipe wall thickness
b) the weight per linear measure
c) available lengths from suppliers
d) maximum pressure the pipe can withstand
a) the pipe wall thickness
466
# Define the following positions and welds on pipe:
a) 1G
b) 2G
c) 5G
a) weld completed in a flat position from above the joint while rotating the pipe with its axis horizontal. 1GR
b) 2G is the groove weld completed in the horizontal position with the pipe axis fixed vertically. no rotation.
c) 5G is a groove weld completed with the pile axis fixed horizontally. There is no rotation and progression may be uphill or downhill.
467
Single Vee preparations on pipe generally have an included angle within the range of:
a) 22.5- 30
b) 30-45
c) 45 - 60
d) 60 - 75
d) 60 - 75
468
What root gap is recommended for GMAW roll welded pipe joint prior to tack welding?
a) 1.6mm - 2.5mm
b) 2.5mm - 3.2mm
c) 3.2mm - 4mm
d) 4mm.- 6.4mm
c) 3.2mm - 4mm
469
If a pipe fit-up has a gap that is not uniform, at what location should the widest portion of the gap be placed in preparation for welding?
The widest gap should be placed at or near the last quarter of the joint to be welded.
470
For an open gap root pass, a B-G 49A 5 C G^ (ER70S-6) wire is deposited using:
a) short-circuiting arc metal transfer
b) spray arc metal transfer
c) globular arc metal transfer
d) rotating arc metal transfer
a) short-circuiting arc metal transfer
471
What mode of metal transfer is recommended for FCAW wire on the fill passes and cap in the 2G position?
a) short-circuting
b) globular
c) pulsed spray
d) rotating arc modulated pulsed spray
b)globular
472
State two corrective actions that may help prevent the root pass from becoming concave with shrinkage marks showing on the inside.
a) decrease wire feed speed and voltage
b) work closer to the top near the 1 o'clock position
c) reduce the root spacing
d) use a small root face rather than a feathered root edge
473
The preferred direction of travel for GMAW on the root pass in the 5G position is ____
downhill
474
Cleaning the root pass prior to the second pass with FCAW is:
a) never required
b) required only if weave beads are done
c) required only if stinger beads are done.
d) required if large islands of non-metallic oxides are present
d) required if large islands of non-metallic oxides are present
475
Up to what length of contact tip is best suited for GMAW with aluminum filler wires?
a) 25.4mm
b) 50.8mm
c) 76.2mm
d) 101.6mm
d) 101.6mm
476
List 3 advantages of using GMAW on aluminum
a) high deposition rates compared to GTAW
b) can be used long distances from the power source
c) no flux or slag, no inclusions in the weld material
d) clean up time is reduced or eliminated
e) may be used in all positions
f) works well on materials 3.2mm and up
g) works well for spot welding operations
477
which aluminum filler metal is not recommended for sustained high temperature service?
a) 2319
b) 4145
c) 4043
d) 5356
d)5356
478
What 3 factors should you consider when setting GMAW welding parameters
a) material thickness
b) alloy type
c) available equipment
479
What effect does stickout have on arc length with GMAW on aluminum
the electrical stickout is not as critical as that required for steel. very little change in arc length is noticed with various stickout distances.
480
After pre-cleaning aluminum, you should weld the joint:
a) with copper backing bar to prevent oxide contamination.
b) before it dries to prevent cracking
c) after age hardening has occured
d) as soon as all liquids have evaporated from the joint area
d) as soon as all liquids have evaporated from the joint area
481
what precaution but you take when using heavy wire brushing or an abrasive grinding to remove a heavy oxide layer from aluminum?>
heavy brushing or abrasive discs tend to drive the aluminum oxides into the metal surface and entrap them. The result is possible contamination of the weld.
482
what are the two most commonly used filler metals for GMAW on aluminum
a) 2319 and 4145
b) 4145 and 5356
c) 4043 and 4047
d) 4043 and 5356
d) 4043 and 5356
483
What is the purpose of a light preheat on aluminum alloys?
a) to remove moisture
b) to reduce residual stresses after welding
c) easier arc starting
d) to remove surface oxides
a) to remove moisture
484
What type of current do you use with GMAW for welding aluminum?
a) AC
b) DCEP
c) DCEN
d) AC with continuous high frequency
b) DCEP
485
What methods can you use to fill a crater?
reverse trave direction for a short distance. run-off tabs, breaking and restarting the arc,
486
What electrode inclination is recommended for the welding of aluminum
forehand at all times
487
Most shielding gases for GMAW on aluminum are:
a) inert gases
b) oxidizing gases
c) nitriding gases
d) ionized gases
a) inert gases
488
The shielding gas most commonly used with GMAW on non-ferrous metals is:
a) carbon dioxide
b) nitrogen
c) helium
d) argon
d) argon
489
list 4 causes of burn back
a) wire feed speed too slow
b) worn or dirty contact tube
c) worn or dirt liner
d) wrong polarity
e) kinked electrode wire
f) liner too ling
g) arcing inside the contact tube
490
what happens when you use a backhand inclination when using GMAW on aluminum?
a) lack of fusion
b) the wire tends to burn back into the contact tube
c) a black soot oxide appears on the surface
d) excessive bead convexity
c) a black soot oxide appears on the surface
491
Preheat applied t oaluminum components is:
a) done using inductance heating methods only
b) seldom required to exceed 149 C
c) not applied unless the ambient temperature is below -18
d) done only prior t isolation heat treating
b) seldom required to exceed 149 C
492
The recommended technique and metal transfer for GMAW on aluminum is:
a) a pulsed spray transfer with a long stickout
b) forehand (pushing) inclination with short circuit or spray transfer
c) backhand (pulling) inclination with spray transfer
d) fast travel speed with continuous high frequency current transfer
b) forehand (pushing) inclination with short circuit or spray transfer
493
What element causes porosity in an aluminum weld?
a) oxygen
b) nitrogen
c) carbon dioxide
d) hydrogen
d) hydrogen
494
What can happen if you leave a crater at the end of an aluminum weld?
a) cracking
b) porosity
c) slag inclusions
d) hard spots
a) cracking
495
A fraction with a numerator smaller than its denominator is called a
A proper fraction
B improper fraction
C mixed number
D whole number
A Proper Fraction
496
```
A fraction with a numerator equal to or larger than its denominator is called a
A Proper fraction
B improper fraction
C mixed number
D whole number
```
Improper
497
```
A mixed number consist of
A proper faction only
B whole number only
C whole number and a fraction
D an equivalent fraction
```
A whole number and a fraction
498
```
Fractions that are equal in value to each other are called
A proper fractions
B improper fractions
C equivalent fractions
D mixed numbers
```
Equivalent
499
```
Which is a proper fraction
A 3/2
B1 1/2
C 8/8
D 2/3
```
2/3
500
```
which is an improper fraction
A 8/7
B 1 7/8
C 6/8
D 8/17
```
8/7
