CWB LEVEL 2 LATEST EXAMS STUSY GUIDE
QUESTIONS AND ANSWERS SURE A+
✔✔The result of increased nitrogen content in the final weld deposit will be:
(A) cracking
(B) undercut
(C) poor bead appearance
(D) porosity - ✔✔(D) porosity
✔✔The following electrode is NOT gas-shielded:
(A) E491T-1
(B) E492C-3
(C) E492T-3
(D) E492T-5 - ✔✔(C) E492T-3
✔✔According to AWS, a brown tungsten electrode will be composed of tungsten and
which alloying ingredient?
(A) zirconium oxide
(B) thorium oxide
(C) cerium oxide - ✔✔(A) zirconium oxide
,✔✔The tensile value of an electrode designation is typically designated by CSA in ____.
(A) kPa
(B) MPa
(C) psi - ✔✔(B) MPa
✔✔What temperature does CSA W59 require low-hydrogen electrodes to be held at? -
✔✔120° Celsius
✔✔What does the suffix "-1" attached to electrode designations E4918 and E4924
indicate? - ✔✔Improved impact properties
✔✔Which of the following SAW fluxes may be gathered and re-used?
(A) Fused
(B) Bonded - ✔✔(A) Fused
✔✔What is the green colour tungsten electrode composed of? - ✔✔Pure tungsten
✔✔What nominal percentage of thorium oxide does a red colour tungsten electrode
contain? - ✔✔2%
✔✔True or False: Weld metal shrinkage is proportional to the amount of weld metal. -
✔✔True
✔✔In an assembly with both groove and fillet welds, which should be welded first? -
✔✔Groove welds
✔✔The contraction effects in weld metal that are of greater magnitude, and therefore
more serious are:
(A) longitudinal
(B) transverse - ✔✔(B) transverse
✔✔What is the max temperature for heat straightening or forming of low-alloy steels? -
✔✔650° Celsius
✔✔What is "taconite"? - ✔✔Iron ore
✔✔In a basic oxygen furnace, what does the term "basic" refer to?
(A) the chemical nature of the molten steel
(B) the chemical nature of the refractory lining of the furnace
, (C) the chemical nature of the oxygen - ✔✔(B) the chemical nature of the refractory
lining of the furnace
✔✔True or False: Metals have a crystalline structure in which atoms are arranged in an
irregular pattern. - ✔✔False
✔✔Ferrite, austenite and cementite are known as:
(A) particles
(B) elements
(C) phases - ✔✔(C) phases
✔✔Which is harder - martensite or fine pearlite? - ✔✔Martensite
✔✔The terms "rimmed", "semi-killed" and "killed" steel refer to the degree of
__________.
(A) Quality
(B) Weldability
(C) Deoxidation - ✔✔(C) Deoxidation
✔✔Alloys are mixtures of metals with __________.
(A) only other metals
(B) only other non-metals
(C) both metals and non-metals - ✔✔(C) both metals and non-metals
✔✔Which of the following classes of steel has NO deoxidants added during production?
(A) Rimmed
(B) Semi-killed
(C) Killed - ✔✔(A) Rimmed
✔✔Which of the following classes of steel is fully-deoxidized and has a large shrinkage
cavity or "pipe" at the top?
(A) Rimmed
(B) Semi-killed
(C) Killed - ✔✔(C) Killed
✔✔Which of the following terms describes steel with less than 0.8% carbon content?
(A) Hypoeutectoid
(B) Hypereutectoid - ✔✔(A) Hypoeutectoid
QUESTIONS AND ANSWERS SURE A+
✔✔The result of increased nitrogen content in the final weld deposit will be:
(A) cracking
(B) undercut
(C) poor bead appearance
(D) porosity - ✔✔(D) porosity
✔✔The following electrode is NOT gas-shielded:
(A) E491T-1
(B) E492C-3
(C) E492T-3
(D) E492T-5 - ✔✔(C) E492T-3
✔✔According to AWS, a brown tungsten electrode will be composed of tungsten and
which alloying ingredient?
(A) zirconium oxide
(B) thorium oxide
(C) cerium oxide - ✔✔(A) zirconium oxide
,✔✔The tensile value of an electrode designation is typically designated by CSA in ____.
(A) kPa
(B) MPa
(C) psi - ✔✔(B) MPa
✔✔What temperature does CSA W59 require low-hydrogen electrodes to be held at? -
✔✔120° Celsius
✔✔What does the suffix "-1" attached to electrode designations E4918 and E4924
indicate? - ✔✔Improved impact properties
✔✔Which of the following SAW fluxes may be gathered and re-used?
(A) Fused
(B) Bonded - ✔✔(A) Fused
✔✔What is the green colour tungsten electrode composed of? - ✔✔Pure tungsten
✔✔What nominal percentage of thorium oxide does a red colour tungsten electrode
contain? - ✔✔2%
✔✔True or False: Weld metal shrinkage is proportional to the amount of weld metal. -
✔✔True
✔✔In an assembly with both groove and fillet welds, which should be welded first? -
✔✔Groove welds
✔✔The contraction effects in weld metal that are of greater magnitude, and therefore
more serious are:
(A) longitudinal
(B) transverse - ✔✔(B) transverse
✔✔What is the max temperature for heat straightening or forming of low-alloy steels? -
✔✔650° Celsius
✔✔What is "taconite"? - ✔✔Iron ore
✔✔In a basic oxygen furnace, what does the term "basic" refer to?
(A) the chemical nature of the molten steel
(B) the chemical nature of the refractory lining of the furnace
, (C) the chemical nature of the oxygen - ✔✔(B) the chemical nature of the refractory
lining of the furnace
✔✔True or False: Metals have a crystalline structure in which atoms are arranged in an
irregular pattern. - ✔✔False
✔✔Ferrite, austenite and cementite are known as:
(A) particles
(B) elements
(C) phases - ✔✔(C) phases
✔✔Which is harder - martensite or fine pearlite? - ✔✔Martensite
✔✔The terms "rimmed", "semi-killed" and "killed" steel refer to the degree of
__________.
(A) Quality
(B) Weldability
(C) Deoxidation - ✔✔(C) Deoxidation
✔✔Alloys are mixtures of metals with __________.
(A) only other metals
(B) only other non-metals
(C) both metals and non-metals - ✔✔(C) both metals and non-metals
✔✔Which of the following classes of steel has NO deoxidants added during production?
(A) Rimmed
(B) Semi-killed
(C) Killed - ✔✔(A) Rimmed
✔✔Which of the following classes of steel is fully-deoxidized and has a large shrinkage
cavity or "pipe" at the top?
(A) Rimmed
(B) Semi-killed
(C) Killed - ✔✔(C) Killed
✔✔Which of the following terms describes steel with less than 0.8% carbon content?
(A) Hypoeutectoid
(B) Hypereutectoid - ✔✔(A) Hypoeutectoid
