Welding Final

When trouble shooting a GMAW system, categorize the problem into one of the three groups: wire delivery, gas delivery or ___ a) Electrode extension b) Cold feed c) Electrical d) Travel Speed

c) Electrical

Higher silicon and ___ deoxidizer level enhances toe wetting and finished weld bead appearance a) Zirconium b) Molybdenum c) Manganese d) Vanadium

c) Manganese

When welding make sure the work cable is connected ___ to the part being welded a) As close b) Perpendicular c) At a right angle d) Parallel

a) As close

Classification of electrode that contains the most silicon is ___ a) ER70S-6 b) ER70S-3 c) ER70S-4 d) ER70S-7

a) ER70S-6

Load range and ___ are the two basic components of fatigue on a weld a) Load Cycle b) Toughness c) Ductility d) Tensile Strength

a) Load Cycle

___ mode of metal transfer is capable of root pass work on pipe and has all weld position capability a) Short Circuit b) Globular Transfer c) Axial Spray d) None of the Above

a) Short Circuit

The carbon content of steel will have an effect on the ___ at which transformation takes place a) temperature b) PWHT c) Alloy d) Preheat

a) Temperature

Welding operation inspection includes which of the following: a) Travel Speed b) Surface Conditions c) Burn Through d) Joint Alignment

a) Travel Speed

For gas shielding arc welding the AWS specification for carbon steel filler metal is ___ a) A5.28 b) A5.18 c) A5.00 d) A5.50

b) A5.18

Electrode diameter will limit ___ a) Voltage b) Amperage c) Travel Speed d) CTWD

b) Amperage

Welding with GMAW utilizes the polarity ___ a) AC b) DCEP c) CFH c) DCEN

b) DCEP

Knowing the length and calculated amount of energy put into a weld by True Energy one can determine ___ a) Charpy Number b) Heat Input c) Energy Value d) Rockwell Value

b) Heat Input

Argon and ___ are classified as inert shielding gasses a) Hydrogen b) Helium c) Carbon Dioxide d) Nitrogen

b) Helium

___ produces a more focused arc, compared to traditional pulse welding a) Rapid Arc b) Precision Pulse c) Pulse on Pulse d) STT

b) Precision Pulse

Cylinders are at extreme pressure at approximately ___ psi a) 1500 b) 3500 c) 2500 d) 4500

c) 2500

AWS restricts the level of sulfur and ___ in GMAW electrodes due to undesirable welds and cracking a) Silicon b) Zirconium c) Phosphorus d) Copper

c) Phosphorus

A common problem with GMAW-S is ___ a) Undercut b) Excessive Face Reinforcement c) Porosity d) Cold Lap

d) Cold Lap