NOCTI WELDING COMPREHENSIVE EXAMS 2025/2026
QUESTIONS AND ANSWERS GRADED A+
✔✔What component of an oxygen cylinder allows the product to be removed - ✔✔Valve
assembly
✔✔When medium gas welding, a number _____ filter lens should be used - ✔✔6
✔✔Information contained in the tail of a welding symbol might include - ✔✔Welding
process
✔✔Referring to the symbol below, the flag signifies a _____ weld - ✔✔Field
✔✔Which of the following welding symbols specifies a weld that extends completely
around a joint - ✔✔Circle
✔✔A neutral oxygen acetylene flame has a temperature range of - ✔✔5,800 to 6,300
degrees Fahrenheit
✔✔The same style cutting tip is used for both natural gas - ✔✔Propane
✔✔In PAC, kerf refers to - ✔✔The gap produced by cutting
✔✔Electrodes used for CAC-A are made of carbon or - ✔✔Graphite
✔✔In air carbon arc cutting, compressed air is used to - ✔✔Dislodge molten material
✔✔Compressed air must be ______ in the PAC process - ✔✔Completely dry
✔✔Size of lead cables required for arc processes is determined by the - ✔✔Rated
amperage that is can carry without overheating
✔✔When plasma arc cutting, dross can form on the bottom side of the metal due to -
✔✔Travel speed too fast or slow
✔✔Which of the following is a ferrous metal - ✔✔Mild steel
✔✔The process of heating a metal and slow cooling it in order to toughen it and reduce
brittleness is know as - ✔✔Annealing
✔✔The ability of a metal to withstand shock loading is known as its - ✔✔Toughness
✔✔The _____ weld test is classified as a destructive test - ✔✔Guided bend
, ✔✔Which of the following welds aligns two metal pieces approximately in the same
plane - ✔✔Butt joint
✔✔When using reverse polarity, the electrode will be - ✔✔Positive
✔✔What is the tensile strength strength of an E6012 electrode - ✔✔60,000
✔✔What is the duty cycle of a SMAW power supply that can run for seven minutes out
of every 10 minutes period without overheating - ✔✔70 percent
✔✔One possible type of metal transfer when employing the GMAW consumable
electrode process is _____ transfer - ✔✔Globular
✔✔For what process is a DC constant voltage power source used - ✔✔GMAW
✔✔A consumable isn't he GTAW process would include - ✔✔Filler rods
✔✔What is the proper gas flow rate for the use in GTAW application - ✔✔20 cfh
✔✔The AWS classification of GTAW filler metal, ER70S-6, what does the R stand for -
✔✔Rod
✔✔What is one of the primary causes of porosity in GTAW - ✔✔Hydrogen pickup
✔✔GTAW of magnesium is done using what polarity - ✔✔AC
✔✔What is not an advantage of argon vs helium as a shielding gas in GTAW -
✔✔Argon = Smaller heat affected zone
✔✔What is the proper electrical stick out of tungsten in most GTAW applications -
✔✔1/8"
✔✔What is not true regarding GTAW using alternating current - ✔✔High frequency is
for arc starts only
✔✔What is the proper type of power source for GTAW - ✔✔constant current
✔✔What polarity has electrons flowing from the tungsten to the work piece? - ✔✔Dc-
✔✔When using GTAW, what is not recommended practice for adding filler metal -
✔✔Remove filler from weld zone to cool
QUESTIONS AND ANSWERS GRADED A+
✔✔What component of an oxygen cylinder allows the product to be removed - ✔✔Valve
assembly
✔✔When medium gas welding, a number _____ filter lens should be used - ✔✔6
✔✔Information contained in the tail of a welding symbol might include - ✔✔Welding
process
✔✔Referring to the symbol below, the flag signifies a _____ weld - ✔✔Field
✔✔Which of the following welding symbols specifies a weld that extends completely
around a joint - ✔✔Circle
✔✔A neutral oxygen acetylene flame has a temperature range of - ✔✔5,800 to 6,300
degrees Fahrenheit
✔✔The same style cutting tip is used for both natural gas - ✔✔Propane
✔✔In PAC, kerf refers to - ✔✔The gap produced by cutting
✔✔Electrodes used for CAC-A are made of carbon or - ✔✔Graphite
✔✔In air carbon arc cutting, compressed air is used to - ✔✔Dislodge molten material
✔✔Compressed air must be ______ in the PAC process - ✔✔Completely dry
✔✔Size of lead cables required for arc processes is determined by the - ✔✔Rated
amperage that is can carry without overheating
✔✔When plasma arc cutting, dross can form on the bottom side of the metal due to -
✔✔Travel speed too fast or slow
✔✔Which of the following is a ferrous metal - ✔✔Mild steel
✔✔The process of heating a metal and slow cooling it in order to toughen it and reduce
brittleness is know as - ✔✔Annealing
✔✔The ability of a metal to withstand shock loading is known as its - ✔✔Toughness
✔✔The _____ weld test is classified as a destructive test - ✔✔Guided bend
, ✔✔Which of the following welds aligns two metal pieces approximately in the same
plane - ✔✔Butt joint
✔✔When using reverse polarity, the electrode will be - ✔✔Positive
✔✔What is the tensile strength strength of an E6012 electrode - ✔✔60,000
✔✔What is the duty cycle of a SMAW power supply that can run for seven minutes out
of every 10 minutes period without overheating - ✔✔70 percent
✔✔One possible type of metal transfer when employing the GMAW consumable
electrode process is _____ transfer - ✔✔Globular
✔✔For what process is a DC constant voltage power source used - ✔✔GMAW
✔✔A consumable isn't he GTAW process would include - ✔✔Filler rods
✔✔What is the proper gas flow rate for the use in GTAW application - ✔✔20 cfh
✔✔The AWS classification of GTAW filler metal, ER70S-6, what does the R stand for -
✔✔Rod
✔✔What is one of the primary causes of porosity in GTAW - ✔✔Hydrogen pickup
✔✔GTAW of magnesium is done using what polarity - ✔✔AC
✔✔What is not an advantage of argon vs helium as a shielding gas in GTAW -
✔✔Argon = Smaller heat affected zone
✔✔What is the proper electrical stick out of tungsten in most GTAW applications -
✔✔1/8"
✔✔What is not true regarding GTAW using alternating current - ✔✔High frequency is
for arc starts only
✔✔What is the proper type of power source for GTAW - ✔✔constant current
✔✔What polarity has electrons flowing from the tungsten to the work piece? - ✔✔Dc-
✔✔When using GTAW, what is not recommended practice for adding filler metal -
✔✔Remove filler from weld zone to cool
