Exam (elaborations)
114 MIG WELDING FINAL EXAM QUESTIONS AND VERIFIED ANSWERS
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114 MIG WELDING FINAL EXAM QUESTIONS AND VERIFIED ANSWERS...
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114 MIG WELDING FINAL EXAM QUESTIONSAND VERIFIED ANSWERS
The welding process that uses flux cored wire without the use of external
shielding is called _____ - ANSWER Self-shielding FCAW
If the tongue and lace area of a welder's safety shoes are exposed, the welder
should ____ - ANSWER Wear leather spats or chaps
A powered extraction system is a valuable tool for ____ - ANSWER Removing
welding fumes
Spray transfer, globular transfer and pulsed transfer are____ - ANSWER
GMAW metal transfer modes
A variation of spray transfer welding in which current is cycled from high and
low is_____ - ANSWER Pulsed transfer welding
Which shielding has improved FCAW weld penetration - ANSWER Carbon
Dioxide
Arc voltage
The operating voltage of welding machine that is produced during welding.
In the engines that drive generators, the engine speed is regulated by____ -
ANSWER Governors
, A duty cycle is the percent of a 10 minute period during which a welding
machine can continuously ____ - ANSWER Produce it's rated amperage
without overheating
Welder power sources usually have controls to adjust arc voltage slope and
_____ - ANSWER Inductance
Termination connection styles for welding cables usually have ___ - ANSWER
Lugs and quick disconnects
A device that pulls the electrode wire from a spool and pushes it through the
gun cable and gun is called a ____ - ANSWER Wire feeder
The ______ supplies the electrical connection between welding current and
electrode wire. - ANSWER Contact tip
Shielding gases displace what from the weld zone to prevent contamination of
the weld puddle? - ANSWER Atmosphere
Which of the following statements is true concerning selection and/or hook-up
of shielding gas cylinders to the welding machine? - ANSWER Remove the
protective cap from the cylinder, open the valve for a brief period to blow out
any dirt in the valve, then close the valve
If a spool of welding wire meets the specification, but does not have any record
of its chemical composition or strength, it is assumed that the wire is to be used
for ____ - ANSWER Private use only
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