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100 official format practice questions.
100問 • 1年前
  • Fern Hiebert
  • 通報

    問題一覧

  • 1

    What is the greatest allowable electrode extension for manual CAC-A gouging on carbon steel base materials?

    7" electrode extension

  • 2

    Annealing is a heat treatment process that results in the material being in which state?

    softest, toughest, weakest state

  • 3

    What is the most suitable material for making a permanent template for a pipe?

    fiber gasket

  • 4

    In ASME, what is used to identify the chemical composition of weld metal?

    A-Numbers

  • 5

    What are the two methods of starting the arc when cutting with PAC?

    edge and pierce start

  • 6

    Which metalhas the highest likelihood of cracking due to weld joint shrinkage?

    cast iron

  • 7

    What determines the travel speed when using PAC equipment?

    type and thickness of the material

  • 8

    Which of the following is a functional component of a regulator?

    diaphram

  • 9

    What do excessive drag lines indicate when performing oxy-fueling cutting?

    travel speed is too fast

  • 10

    What is the radius of a 6" (15 cm) long radius 90-degree elbow ?

    9" (23cm)

  • 11

    What does 3F signify on a welding specification sheet ?

    vertical fillet weld position

  • 12

    What tool would you use to scribe large arcs and circles ?

    trammel points

  • 13

    What is the role of flux when using OAW ?

    dissolve or dislodge existing oxides and float them to the surface of the weld bead

  • 14

    Which material offers the least protection from hot sparks and slag when cutting with oxy-fuel torch

    polyester

  • 15

    How is the size of a fillet weld measured ?

    by the length of the shortest leg

  • 16

    What code or standard covers the construction of pressure vessels ?

    ASME Section VIII

  • 17

    What is the open circuit voltage range used with the PAC gouging process ?

    120-400 volts

  • 18

    How can you check for leaks in oxy-fuel equipment ?

    with a leak detection fluid

  • 19

    Which standard pertains to welded steel construction using metal arc welding ?

    CSA W59

  • 20

    Who is responsible for the administration and certification of CSA W47.1?

    Canadian Welding Bureau

  • 21

    In what direction does metal expand when preheated without any restraint ?

    volumetrically (in all directions)

  • 22

    What is the explosive mixture range of acetylene gas in air ?

    2.5%-80%

  • 23

    When using CAC-A process, what is the consequence of inadequate air pressure ?

    carbon deposits in the base metal

  • 24

    Which component of a welding machine converts AC current to DC current ?

    rectifier

  • 25

    Which of the following issues is most likely caused by inadequate air supply in a CAC-A system ?

    excessive carbon deposits and contaminated base metal

  • 26

    What is the process of controlled heating (1100°F to 1150°F) (539°C to 621°C) of a welded steel fabrication followed by slow controlled cooling ?

    stress relieving

  • 27

    Which electrode can be used for shielded metal arc cutting (electric arc cutting) ?

    E6010 (E4310)

  • 28

    What is the primary reason for using pre-heat in heavy sections before welding ?

    to reduce the quenching effect

  • 29

    What tip size should be used to cut sheet metal ?

    #0

  • 30

    What is the maximum number of plates that a plate clamp with a locking grip can lift ?

    one

  • 31

    What is the approximate temperature range of a rod oven for the proper storage of low hydrogen electrodes ?

    30°C - 140°C (85°F - 250°F) above the ambient temperature

  • 32

    Which set of parameters offers the best selection for air pressure and amperage settings when using 4" (6.4mm) diameter CAC-A electrodes ?

    200 - 400 amps @ 80 - 100 psi (551-689 KPa) air pressure

  • 33

    What is the best fuel gas choice for pre-heating material that is 6" (150mm) thick or thicker ?

    propane

  • 34

    How can noise, fume and radiation levels be reduced when using the PAC process for gouging or cutting operations ?

    cutting and gouging may be done underwater on a specially designed water table

  • 35

    How many different types of welding tips are available for oxy-fuel welding/brazing ?

    two

  • 36

    In the CSA classification system for E492T - 6CH, what does the number 2 represent ?

    welding limited to the flat and horizontal positions

  • 37

    What factor is used to determine the amount of heat released by a welding tip?

    the size of the tip orifice

  • 38

    In the E7024 (E4924) electrode classification, which number indicates the welding position ?

    2

  • 39

    Which tool is the most accurate for measuring the leg length of a fillet weld ?

    a fillet weld gauge

  • 40

    What is the temperature range produced within the plasma arc stream ?

    18,000°F - 50,000°F (10,000° - 27,760°C)

  • 41

    Which two types of shielding gases are used with a plasma dual flow PAC torch system ?

    Carbon Dioxide and Nitrogen

  • 42

    Where would you most likely find the acceptable amount of angular distortion allowable tolerance ?

    notes and specifications

  • 43

    Which of the following designations indicates characteristics for a group of electrodes under ASME ?

    F4

  • 44

    Which electrode would you choose to enhance productivity?

    E7024 (E4924)

  • 45

    What type of material has a grain structure that appears very coarse and silvery ?

    what cast iron

  • 46

    What size whip should be used if the cable from the welding machine is a #1 ?

    3

  • 47

    Which disc should be selected for use with a 5" grinder that has a 10,000 rpm rating and is being used on the flat side ?

    disc thickness 1/4", rated at 12,000 rpm

  • 48

    What current and polarity are used in the plasma arc cutting and gouging operations ?

    DCSP Direct current straight polarity

  • 49

    Which type of drawing displays all three sides equally and uses horizontal plane lines at a 30-degree angle ?

    isometric

  • 50

    What modification is made to a PAC cutting torch to make it suitable for gouging operations ?

    the torch is changed to use a nozzle that reduces air construction, resulting in lower arc stream velocity

  • 51

    What are the three main types of CAC-A electrodes ?

    DC plain, DC copper coated, and AC copper coated electrodes

  • 52

    When fitting and assembling, what is the normal length for tack welds ?

    same length as the thickness of the base metal

  • 53

    What type of PAC torch is most commonly used in industry ?

    air gas PAC torches

  • 54

    What determines the material thickness when punching holes with an iron worker ?

    only punch material thickness equal to or less than the punch diameter

  • 55

    Why should oxy-acetylene welding or cutting never be done with the acetylene cylinder lying down ?

    acetone will flow from the acetylene cylinder

  • 56

    What are the equipment requirements for CAC-A ?

    source of compressed air, carbon electrodes, electrode holders, and welding power source

  • 57

    What tool would you provide the most accurate measurement for determining the wall thickness of a pipe ?

    calipers

  • 58

    What can be done to achieve more than 1000 amps for automatic and semi-automatic CAC-A operations ?

    two or more standard welding machines may be connected in parallel to obtain the needed amperage output

  • 59

    When using the oxy-fuel cutting process, what is required when cutting thinner materials ?

    more torch inclination

  • 60

    Which power source and polarity combination is used for manual medium to light duty CAC-A gouging operations ?

    AC/DC, CC power source set up using DCRP, provided it has sufficient amperage output and 100% duty cycle

  • 61

    According to OH&S regulations, what is the minimum number of degrees that the guard must cover the grinding disc ?

    120°

  • 62

    What is the most likely cause of excessive carbon buildup on Mild steel when performing manual CAC-A gouging operations ?

    improper air jet position or flow, travel speed to fast

  • 63

    Which drawing shows all dimensions and the completed object ?

    detail

  • 64

    What is the main purpose of the copper coating found on CAC-A electrodes ?

    to reduce the vaporization rate of the electrode

  • 65

    Which tool is the best choice for cutting 22 gauge steel roof decking ?

    cut-off saw

  • 66

    What is the most common ratio of soluble oil to water used for coolant/lubricant on a horizontal band saw ?

    1:25

  • 67

    What is the best method for determining the composition of a metal to ensure it can be welded ?

    check the mill test report

  • 68

    Which type of welding machine is known for significant energy savings ?

    inverter

  • 69

    What occurs between the yield point and the ultimate tensile strength during a tensile strength test ?

    elastic/plastic range is reached

  • 70

    With a drawing scale of 1:5, what is the length of the line on the drawing for a plate length of 150 cm (59") ?

    30 cm (12")

  • 71

    How many millimeters are equivalent to 6 feet 3-1/2" ?

    1918

  • 72

    What is performed to restore a grinding wheel that has become glazed or loaded with foreign particles ?

    dressing

  • 73

    A dark, hazy leading edge on the puddle, along with a bubbling action in the puddle, is characterized of what type of oxy-fuel flame ?

    carbonizing fuel

  • 74

    Which fuel gas provides the greatest amount of heat energy for pre-heating ?

    propane

  • 75

    What is the most commonly used type of non-destructive testing ?

    visual inspection

  • 76

    What does the abbreviation RFSO stand for in a material list ?

    raised face slip on

  • 77

    What is the most precise method for identifying the properties of a metal ?

    by reviewing the appropriate Mill Test Report

  • 78

    When ultraviolet rays from the welding arc interact with chlorinated hydrocarbon degreasers, what poisonous gas is produced ?

    phosgene gas

  • 79

    What is the rigging signal used to lift a load vertically ?

    finger pointed upwards with a circular turning motion

  • 80

    What is the best method to control arc radiation, vapors and fumes while using PAC ?

    use a water table and complete the cut under water

  • 81

    What dlshoukd a welder do when welding in an area where the general public may be exposed to the rays of the arc ?

    use proper screens and warning signs

  • 82

    What characteristics indicate a flashback ?

    an acetylene hose has ignited and is burning

  • 83

    What is used to check the inter-pass temperature of a welded joint ?

    temperature stick

  • 84

    What is the temperature which an electrode o en us set for storage ?

    121°C/250°F

  • 85

    Which unit is used to measure force or pressure in a welding circuit ?

    volts

  • 86

    Which method of weld testing offers the most detailed information ?

    radiography

  • 87

    What is the angle of cut needed to create a template for a three-piece 90° elbow ?

    22.5°

  • 88

    What is the purpose of a groove angle when welding thick plate ?

    to allow access to the root of the weld

  • 89

    What is done to prepare a threaded area before build-up ?

    remove the worn threads by machining or grinding

  • 90

    What does the flow meter measure ?

    volume of gas

  • 91

    When is the gas tungsten arc welding (GTAW) process utilized ?

    when welding in thin or alloy material

  • 92

    How is the bead reduced when using the gas tungsten arc welding (GTAW) process ?

    by decreasing the amperage

  • 93

    When is direct current electrode negative (DCEN) used in submerged Arc Welding (SAW) ? 🪚

    when shallower penetration is needed

  • 94

    What is an advantage of using the back-step method when welding a tee joint ?

    distortion is reduced

  • 95

    Which item necessitates a wrap-around when replicating a cut ?

    pipe

  • 96

    What is the first step in shutting down oxy-fuel cutting equipment?

    turn off the cylinder valves

  • 97

    How are the electrode holder and ground arranged when preparing air carbon arc cutting (CAC-A) equipment to gouge steel ?

    by connecting the electrode to positive and the ground to negative

  • 98

    What amperage is used when performing air carbon arc cutting (CAC-A) with a 6.4-mm (1/4") electrode ?

    201 A to 400 A

  • 99

    What type of eye protection is required when observing arc welding ?

    welding helmet

  • 100

    What is the benefit of using a two-stage regulator ?

    it maintains a more constant pressure

  • SMAW Fillet Welds on Mild Steel

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    問題一覧

  • 1

    What is the greatest allowable electrode extension for manual CAC-A gouging on carbon steel base materials?

    7" electrode extension

  • 2

    Annealing is a heat treatment process that results in the material being in which state?

    softest, toughest, weakest state

  • 3

    What is the most suitable material for making a permanent template for a pipe?

    fiber gasket

  • 4

    In ASME, what is used to identify the chemical composition of weld metal?

    A-Numbers

  • 5

    What are the two methods of starting the arc when cutting with PAC?

    edge and pierce start

  • 6

    Which metalhas the highest likelihood of cracking due to weld joint shrinkage?

    cast iron

  • 7

    What determines the travel speed when using PAC equipment?

    type and thickness of the material

  • 8

    Which of the following is a functional component of a regulator?

    diaphram

  • 9

    What do excessive drag lines indicate when performing oxy-fueling cutting?

    travel speed is too fast

  • 10

    What is the radius of a 6" (15 cm) long radius 90-degree elbow ?

    9" (23cm)

  • 11

    What does 3F signify on a welding specification sheet ?

    vertical fillet weld position

  • 12

    What tool would you use to scribe large arcs and circles ?

    trammel points

  • 13

    What is the role of flux when using OAW ?

    dissolve or dislodge existing oxides and float them to the surface of the weld bead

  • 14

    Which material offers the least protection from hot sparks and slag when cutting with oxy-fuel torch

    polyester

  • 15

    How is the size of a fillet weld measured ?

    by the length of the shortest leg

  • 16

    What code or standard covers the construction of pressure vessels ?

    ASME Section VIII

  • 17

    What is the open circuit voltage range used with the PAC gouging process ?

    120-400 volts

  • 18

    How can you check for leaks in oxy-fuel equipment ?

    with a leak detection fluid

  • 19

    Which standard pertains to welded steel construction using metal arc welding ?

    CSA W59

  • 20

    Who is responsible for the administration and certification of CSA W47.1?

    Canadian Welding Bureau

  • 21

    In what direction does metal expand when preheated without any restraint ?

    volumetrically (in all directions)

  • 22

    What is the explosive mixture range of acetylene gas in air ?

    2.5%-80%

  • 23

    When using CAC-A process, what is the consequence of inadequate air pressure ?

    carbon deposits in the base metal

  • 24

    Which component of a welding machine converts AC current to DC current ?

    rectifier

  • 25

    Which of the following issues is most likely caused by inadequate air supply in a CAC-A system ?

    excessive carbon deposits and contaminated base metal

  • 26

    What is the process of controlled heating (1100°F to 1150°F) (539°C to 621°C) of a welded steel fabrication followed by slow controlled cooling ?

    stress relieving

  • 27

    Which electrode can be used for shielded metal arc cutting (electric arc cutting) ?

    E6010 (E4310)

  • 28

    What is the primary reason for using pre-heat in heavy sections before welding ?

    to reduce the quenching effect

  • 29

    What tip size should be used to cut sheet metal ?

    #0

  • 30

    What is the maximum number of plates that a plate clamp with a locking grip can lift ?

    one

  • 31

    What is the approximate temperature range of a rod oven for the proper storage of low hydrogen electrodes ?

    30°C - 140°C (85°F - 250°F) above the ambient temperature

  • 32

    Which set of parameters offers the best selection for air pressure and amperage settings when using 4" (6.4mm) diameter CAC-A electrodes ?

    200 - 400 amps @ 80 - 100 psi (551-689 KPa) air pressure

  • 33

    What is the best fuel gas choice for pre-heating material that is 6" (150mm) thick or thicker ?

    propane

  • 34

    How can noise, fume and radiation levels be reduced when using the PAC process for gouging or cutting operations ?

    cutting and gouging may be done underwater on a specially designed water table

  • 35

    How many different types of welding tips are available for oxy-fuel welding/brazing ?

    two

  • 36

    In the CSA classification system for E492T - 6CH, what does the number 2 represent ?

    welding limited to the flat and horizontal positions

  • 37

    What factor is used to determine the amount of heat released by a welding tip?

    the size of the tip orifice

  • 38

    In the E7024 (E4924) electrode classification, which number indicates the welding position ?

    2

  • 39

    Which tool is the most accurate for measuring the leg length of a fillet weld ?

    a fillet weld gauge

  • 40

    What is the temperature range produced within the plasma arc stream ?

    18,000°F - 50,000°F (10,000° - 27,760°C)

  • 41

    Which two types of shielding gases are used with a plasma dual flow PAC torch system ?

    Carbon Dioxide and Nitrogen

  • 42

    Where would you most likely find the acceptable amount of angular distortion allowable tolerance ?

    notes and specifications

  • 43

    Which of the following designations indicates characteristics for a group of electrodes under ASME ?

    F4

  • 44

    Which electrode would you choose to enhance productivity?

    E7024 (E4924)

  • 45

    What type of material has a grain structure that appears very coarse and silvery ?

    what cast iron

  • 46

    What size whip should be used if the cable from the welding machine is a #1 ?

    3

  • 47

    Which disc should be selected for use with a 5" grinder that has a 10,000 rpm rating and is being used on the flat side ?

    disc thickness 1/4", rated at 12,000 rpm

  • 48

    What current and polarity are used in the plasma arc cutting and gouging operations ?

    DCSP Direct current straight polarity

  • 49

    Which type of drawing displays all three sides equally and uses horizontal plane lines at a 30-degree angle ?

    isometric

  • 50

    What modification is made to a PAC cutting torch to make it suitable for gouging operations ?

    the torch is changed to use a nozzle that reduces air construction, resulting in lower arc stream velocity

  • 51

    What are the three main types of CAC-A electrodes ?

    DC plain, DC copper coated, and AC copper coated electrodes

  • 52

    When fitting and assembling, what is the normal length for tack welds ?

    same length as the thickness of the base metal

  • 53

    What type of PAC torch is most commonly used in industry ?

    air gas PAC torches

  • 54

    What determines the material thickness when punching holes with an iron worker ?

    only punch material thickness equal to or less than the punch diameter

  • 55

    Why should oxy-acetylene welding or cutting never be done with the acetylene cylinder lying down ?

    acetone will flow from the acetylene cylinder

  • 56

    What are the equipment requirements for CAC-A ?

    source of compressed air, carbon electrodes, electrode holders, and welding power source

  • 57

    What tool would you provide the most accurate measurement for determining the wall thickness of a pipe ?

    calipers

  • 58

    What can be done to achieve more than 1000 amps for automatic and semi-automatic CAC-A operations ?

    two or more standard welding machines may be connected in parallel to obtain the needed amperage output

  • 59

    When using the oxy-fuel cutting process, what is required when cutting thinner materials ?

    more torch inclination

  • 60

    Which power source and polarity combination is used for manual medium to light duty CAC-A gouging operations ?

    AC/DC, CC power source set up using DCRP, provided it has sufficient amperage output and 100% duty cycle

  • 61

    According to OH&S regulations, what is the minimum number of degrees that the guard must cover the grinding disc ?

    120°

  • 62

    What is the most likely cause of excessive carbon buildup on Mild steel when performing manual CAC-A gouging operations ?

    improper air jet position or flow, travel speed to fast

  • 63

    Which drawing shows all dimensions and the completed object ?

    detail

  • 64

    What is the main purpose of the copper coating found on CAC-A electrodes ?

    to reduce the vaporization rate of the electrode

  • 65

    Which tool is the best choice for cutting 22 gauge steel roof decking ?

    cut-off saw

  • 66

    What is the most common ratio of soluble oil to water used for coolant/lubricant on a horizontal band saw ?

    1:25

  • 67

    What is the best method for determining the composition of a metal to ensure it can be welded ?

    check the mill test report

  • 68

    Which type of welding machine is known for significant energy savings ?

    inverter

  • 69

    What occurs between the yield point and the ultimate tensile strength during a tensile strength test ?

    elastic/plastic range is reached

  • 70

    With a drawing scale of 1:5, what is the length of the line on the drawing for a plate length of 150 cm (59") ?

    30 cm (12")

  • 71

    How many millimeters are equivalent to 6 feet 3-1/2" ?

    1918

  • 72

    What is performed to restore a grinding wheel that has become glazed or loaded with foreign particles ?

    dressing

  • 73

    A dark, hazy leading edge on the puddle, along with a bubbling action in the puddle, is characterized of what type of oxy-fuel flame ?

    carbonizing fuel

  • 74

    Which fuel gas provides the greatest amount of heat energy for pre-heating ?

    propane

  • 75

    What is the most commonly used type of non-destructive testing ?

    visual inspection

  • 76

    What does the abbreviation RFSO stand for in a material list ?

    raised face slip on

  • 77

    What is the most precise method for identifying the properties of a metal ?

    by reviewing the appropriate Mill Test Report

  • 78

    When ultraviolet rays from the welding arc interact with chlorinated hydrocarbon degreasers, what poisonous gas is produced ?

    phosgene gas

  • 79

    What is the rigging signal used to lift a load vertically ?

    finger pointed upwards with a circular turning motion

  • 80

    What is the best method to control arc radiation, vapors and fumes while using PAC ?

    use a water table and complete the cut under water

  • 81

    What dlshoukd a welder do when welding in an area where the general public may be exposed to the rays of the arc ?

    use proper screens and warning signs

  • 82

    What characteristics indicate a flashback ?

    an acetylene hose has ignited and is burning

  • 83

    What is used to check the inter-pass temperature of a welded joint ?

    temperature stick

  • 84

    What is the temperature which an electrode o en us set for storage ?

    121°C/250°F

  • 85

    Which unit is used to measure force or pressure in a welding circuit ?

    volts

  • 86

    Which method of weld testing offers the most detailed information ?

    radiography

  • 87

    What is the angle of cut needed to create a template for a three-piece 90° elbow ?

    22.5°

  • 88

    What is the purpose of a groove angle when welding thick plate ?

    to allow access to the root of the weld

  • 89

    What is done to prepare a threaded area before build-up ?

    remove the worn threads by machining or grinding

  • 90

    What does the flow meter measure ?

    volume of gas

  • 91

    When is the gas tungsten arc welding (GTAW) process utilized ?

    when welding in thin or alloy material

  • 92

    How is the bead reduced when using the gas tungsten arc welding (GTAW) process ?

    by decreasing the amperage

  • 93

    When is direct current electrode negative (DCEN) used in submerged Arc Welding (SAW) ? 🪚

    when shallower penetration is needed

  • 94

    What is an advantage of using the back-step method when welding a tee joint ?

    distortion is reduced

  • 95

    Which item necessitates a wrap-around when replicating a cut ?

    pipe

  • 96

    What is the first step in shutting down oxy-fuel cutting equipment?

    turn off the cylinder valves

  • 97

    How are the electrode holder and ground arranged when preparing air carbon arc cutting (CAC-A) equipment to gouge steel ?

    by connecting the electrode to positive and the ground to negative

  • 98

    What amperage is used when performing air carbon arc cutting (CAC-A) with a 6.4-mm (1/4") electrode ?

    201 A to 400 A

  • 99

    What type of eye protection is required when observing arc welding ?

    welding helmet

  • 100

    What is the benefit of using a two-stage regulator ?

    it maintains a more constant pressure