SkillsUSA District Welding Practice Test

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• Which statement about GTAW using alternating current is not true?
• Which device is used to switch at high frequencies in inverter power electronics?
• Which is not recommended for FCAW welding?
• Which electrode is widely recognized as the 'Code Rod'?
• Which charts/graphs are used to properly size regulators?
• What is the proper shielding gas flow rate for GTAW application?
• GMAW is generally done with what polarity?
• Which of the following is not a variable when FCAW-SS welding?
• GTAW of chrome-moly uses which polarity?
• Which transfer mode is associated with 90% AR/10% CO2 gas blend on steel?
• Which gas is better for heating applications?
• Should alternate fuel cylinders be fully opened during normal use?
• What is not a function of the core elements found in FCAW electrodes?
• To reduce the risk of hydrogen cracking, which electrode would you select?
• What is a benefit of copper coated GMAW wires?
• Which of the following gases is not inert?
• Which is not a function of the coating elements in SMAW electrodes?
• Gas mixture generally associated with globular transfer on steel?
• One of the primary causes of porosity in GTAW is which of the following?
• The temperature of a neutral oxy-acetylene flame is approximately?
• Which electrode designation is commonly chosen to achieve high notch toughness in welds?
• Which electrode is commonly chosen for high deposition rates due to a fast-fill characteristic?
• Notch toughness is on requirements for some structural applications especially those in seismic areas. What does notch toughness do?
• Silicon and manganese are added to GMAW wires for what purpose?
• Which transfer mode is associated with 80% AR/20% CO2 gas blend on steel?
• When switching to Argon/Helium for GTAW, which parameter should be reduced?
• What is not an advantage to adding argon to shielding gases for FCAW-GS electrodes?
• Which GMAW wire would be the best choice for welding scaled or rusty carbon steel?
• For improved impact properties, select the correct electrode?
• What is a common cause of tungsten frosting or discoloration?
• Which statement is not an advantage of argon vs helium as a shielding gas in GTAW?
• Which electrode is a fast-fill type?
• Which shade is commonly used for lens in oxyfuel cutting tasks?
• Increasing inductance promotes which mode of metal transfer?
• Gas mixture associated with spray transfer on steel?
• Which of the following is not an advantage of an inverter power source?
• In the GTAW filler metal ER70S-t, what does the 'R' represent?
• Propane uses which CGA fitting number?
• In GTAW filler metal designations such as ER70S-t, what is the most common meaning of the 'R' segment?
• What two gases are most commonly used for FCAW-GS welding?
• Inadequate gas flow can cause what defect in GMAW welding?
• What are the two main types of cutting torches used in oxy-fuel systems?
• Which is a function of coating elements in SMAW electrodes?
• Oxygen is associated with what color and thread direction?
• What does DC+ stand for in FCAW-GS terminology?
• Which shielding gas composition is used with FCAW-GS welding to achieve 75% Argon and 25% CO2?
• What could be a cause of weld bead undercut/concave weld?
• There are two types of cutting torches. One is an injector torch. What is the other?
• In ER70S-3, the 70 indicates which property?
• Silicon and manganese function as which type of additives in GMAW wires?
• What type of arc transfer is associated with STT?
• Which polarities are used in SMAW welding?
• The core elements added to FCAW electrodes primarily improve which property?
• Adding argon to shielding gases for FCAW-GS electrodes is not advantageous because it does not produce which effect?
• In short circuit transfer, increasing the inductance does what?
• What does the "70" stand for in ER70S-3?
• What determines the voltage when using GTAW?
• What does the '1' in the FCAW classification E71T-1 signify?
• An E7014 electrode coating contains what percent iron?
• All of these can cause flashbacks except?
• What does SMAW stand for?
• What lens shade is recommended for most oxy-fuel cutting applications?
• Which option is not a safety concern when welding with the SMAW process?
• What is the device inside the power supply that changes AC to DC?
• In the AWS classification, R65, what does the 65 stand for?
• For FCAW-SS welding, a typical electrical stick-out is 3/4", which of the following is true about stick-out length?
• Which statement is true when comparing 4043 and 5356 filler metals used in GTAW of aluminum?
• In E71T-1H8, the 'H8' designation stands for how many milliliters of hydrogen per 100 g of weld metal?
• Chopper Technology is similar to which technology?
• What type of power source is proper for GTAW?
• In GTAW, inert shielding gas primarily functions to?
• As a tank depletes with a single stage regulator, what occurs?
• Which statement about GTAW using alternating current is not true?
• Which statement best describes the AWS R65 designation?
• In the classification E71T-1H8, the '1' after the '71' denotes which welding position?
• Which is not a fix to arc blow?
• Which statement about pulse welding is accurate according to the material?
• Acetylene is dissolved into which substance?
• Which welding electrode is described as flat/horizontal only?
• Which statement about E71T-1H8 classification is true?
• Which transfer mode is associated with 100% CO2 gas on steel?
• What element is added to the core of FCAW wires to increase impact properties?
• In the designation ER70S-6, what does the E represent?
• Which technology is described as being similar to chopper technology?
• Cold lap or lack of fusion is generally associated with which arc transfer?
• Oxyfuel cutting is this type of chemical process?
• Which FCAW electrode is metal cored?
• Which statement best links STT to a transfer type?
• In SMAW electrode E7018-H4R, what does the 'R' stand for?
• In most inverters, which component is used to increase the frequency of the incoming 50/60 Hz signal to the inverter’s operating frequency around 20 kHz?
• Acetylene cylinders are constructed the same as alternate fuel cylinders?
• What technique is often used with E6010 electrodes?
• Which statement about the suffix in E7018-H4R is correct?
• What is not a recommended practice for adding filler metal in GTAW?
• When changing from Argon to Argon/Helium, what procedure needs adjustment?
• If an inverter power supply operates at 20,000 Hz, how fast does a chopper machine operate?
• As a general rule, what is the minimum argon content for pulse welding?
• Which hose grade is used specifically for acetylene gas?
• In GTAW, which practice is not recommended when adding filler metal?
• Which type of hose is used for acetylene fuel gases?
• Which statement about acetylene cylinders is accurate?
• The CGA fitting number 510 is associated with which gas?
• FCAW stands for?
• In E7018-H4R, the H4 designation indicates what?
• What is generally not an effect of a worn or loose contact tip?
• Which designation includes hydrogen content as part of the code?
• In GTAW, which factor primarily sets the arc voltage?
• The industry rating on air-cooled GMAW guns is 60% with which shielding gas?
• What type of CGA fitting does propane have?
• An IGBT is called what?
• Which statement correctly describes the SMAW power source?
• Which procedure is not recommended for reducing high-frequency emission in GTAW?
• Which statement correctly pairs oxygen with its color and threading?
• CTOD stands for?
• Which arc transfer mode is commonly associated with welding defects such as cold lap?
• Which shielding gas flow value is commonly used in GTAW?
• What SMAW rod is known as the 'Code Rod'?
• Which polarity has electrons flowing from the tungsten to the work piece?
• What electrode is not used to weld vertical down?
• What type of power source is recommended for SMAW welding?
• Gas mixture generally associated with pulse transfer on steel?
• Which FCAW electrode is a flat/horizontal only electrode?
• Chopper Technology is most closely related to which power concept?
• ER70S-6 is recommended for welding which condition?
• Which electrode is commonly associated with improved notch toughness for seismic structural use?
• When using GTAW, which is not an advantage?
• FCAW-SS is generally done with what polarity?
• Which statement about regulator sizing is true?
• For 1/4 inch steel in GTAW, what is the proper tungsten diameter?
• Can aluminum be welded with the oxyfuel process?
• In oxy-fuel heating, which gas is commonly preferred?
• Acetylene storage uses which solvent to dissolve the gas?
• Which statement is not an advantage of GTAW pulse welding?
• Which tungsten diameter is suitable for 1/4 inch steel welding in GTAW?
• GTAW pulse welding is not advantageous for which outcome?
• What is an effect of too short electrical stick-out when FCAW-SS welding?
• Which FCAW electrode is a metal cored electrode?
• In the AWS electrode designation E7018-H4R, what does the 'E' stand for?
• What is the advantage of long electrical stick-out found in FCAW-SS welding?
• What type of power source is generally used for GMAW welding?
• What is a possible cause of "worm tracking" when using FCAW-GS wires?
• During spray transfer, increasing inductance does what?
• What is not an advantage of an inverter power source?
• What does GMAW stand for?
• What type of power source is generally used for FCAW welding?
• Oxyfuel cutting involves which type of chemical reaction?
• Which statement is true about 4043 and 5356 filler metals used in GTAW for aluminum?
• Which statement about inverter machines compared to conventional machines is correct according to the material?
• What is not a type of welding flame?
• Which statement is true about FCAW details?
• STT stands for which term?
• Which electrode suffix indicates improved impact properties?
• Which statement about the E7024 designation is correct?
• Which electrode designation is specifically linked to improved impact properties and is used in structural welding?
• GTAW of magnesium is done using which polarity?
• In GTAW of aluminum, which is not a function of inert shielding gas?
• What is a typical electrical stick-out for FCAW-SS welding?
• GTAW of magnesium uses which polarity?
• Long electrical stick-out in FCAW-SS welding primarily increases what?
• Which polarities are most commonly used in SMAW welding?
• GMAW polarity commonly used is DC+ which is best described as?
• Why is DC+ polarity not commonly used in GTAW?
• Water-cooled GTAW torches generally have how many cables?
• A machine has a duty cycle of 300 Amps at 20%. How long can you weld at 300 Amps continuously before the machine shuts down?
• What is not a benefit to using a low-hydrogen FCAW electrode?
• In SMAW welding, what does 'Hot Start' do?
• GTAW of chrome-moly is performed using which polarity?
• What is the proper tungsten stickout length for most GTAW applications?
• FCAW-GS is generally done with polarity?
• When oxy-fuel welding, gases are mixed before exiting the torch in which component?
• For electrode E7024, what does the '2' indicate?
• The minimum argon content for pulse welding is stated as what percent?
• Among the alternate fuels, which can also be used for welding?
• Chopper technology is similar to which technology?
• In FCAW-SS welding, which parameter is not considered a variable?
• The industry rating on air-cooled FCAW-GS guns is 60% with what gas?
• What does the "E" stand for in ER70S-6?
• What element is added to the core of FCAW-SS wires to deoxidize/denitrify the weld?