FCAW: Terms & Defects: Part 2 of 2 (WDTM22)The learner will demonstrate knowledge of flux cored arc welding terminology and defects.Author  David Crawford 



Question 1: Insufficient current produces large droplet transfer and excessive ____________.
Answer 1: voltage Answer 2: splatter Answer 3: penetration Answer 4: spatter Correct Answer: spatter 



Question 2: The ability of an electrode to transfer current is known as:
Answer 1: ionization potential Answer 2: current density Answer 3: surface tension Answer 4: discontinuity Correct Answer: ionization potential 



Question 3: Too high an arc ___________ can result in excessive spatter and wide, flat, irregularly shaped weld beads.
Answer 1: voltage Answer 2: amperage Answer 3: current Answer 4: stickout Correct Answer: voltage 



Question 4: If the ____________ is too high in selfshielded electrodes the result may be porosity.
Answer 1: stickout Answer 2: shielding gas Answer 3: voltage Answer 4: amperage Correct Answer: voltage 



Question 5: Insufficient electrode extension may result in:
Answer 1: excessive voltage Answer 2: excessive amperage Answer 3: electrode fused to contact tip and/or nozzle dragged in weld pool Answer 4: spatter Correct Answer: electrode fused to contact tip and/or nozzle dragged in weld pool 



Question 6: The recommended electrode extension for gasshielded flux core arc welding is:
Answer 1: inch Answer 2: inch Answer 3: inch Answer 4: inch Correct Answer: inch 



Question 7: Parameters which are too _______ may cause slag to be trapped in the weld.
Answer 1: high Answer 2: even Answer 3: uneven Answer 4: low Correct Answer: low 



Question 8: The ability of an electrode to carry current is known as:
Answer 1: ionization potential Answer 2: current density Answer 3: surface tension Answer 4: discontinuity Correct Answer: current density 



Question 9: An acceptable flaw is called a:
Answer 1: detection Answer 2: failure Answer 3: discontinuity Answer 4: defect Correct Answer: discontinuity 



Question 10: A visible crack running in the same direction as the weld is called ________________.
Answer 1: crater crack Answer 2: transverse crack Answer 3: longitudinal crack Answer 4: underbead crack Correct Answer: longitudinal crack 



Question 11: An indentation in the crater of a weld caused for too fluid of weld pool and/or not filling the crater is called:
Answer 1: shrinkage void Answer 2: crater crack Answer 3: slag inclusion Answer 4: underfill Correct Answer: shrinkage void 



Question 12: A visible crack running across a weld (perpendicular) is called:
Answer 1: crater crack Answer 2: transverse crack Answer 3: longitudinal crack Answer 4: underbead crack Correct Answer: transverse crack 



Question 13: What causes a weld pool to lack the ability to wet out?
Answer 1: ionization potential Answer 2: current density Answer 3: surface tension Answer 4: discontinuity Correct Answer: surface tension 


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