AWS CWI Questions and Answers (Module 7)

The free pdf file of Thirty (30) Module 8 and Fourty-one (41) Module 6 Q&A model of 2000 version:

Module 6 AWS CWI QUESTIONS ANSWERS (pdf) DOWNLOAD

Module 8 AWS CWI QUESTIONS ANSWERS (pdf) DOWNLOAD

 

The Below Thirty-five (35) Questions are model of 2018 version

Module 7: Welding procedure qualification & Metallurgy

Q7-1 Which property cannot be determined from a tensile test?
a. ultimate tensile strength
b. percent elongation
c. percent reduction of area impact strength
e. yield strength

Q7-2 The property which describes the ability of a metal to deform or resist some applied load is:
a. strength
b. toughness
c hardness
d. ductility
e. none of the above

Q7-3 The point at which a metal’s behavior changes from elastic to plastic (onset of permanent deformation) is referred to as:
a. yield strength
b. ultimate tensile strength
c. modulus of elasticity
d. Young’s modulus
e. none of the above

Q7-4 Which of the following is an expression for a metal’s ductility?
a. percent elongation
b. percent reduction of area
c. proportional limit
d. a and b above
e. b and c above

Q7-5 What is the percent elongation of a specimen whose original gage length was 2 inches and final gage length was 2.5 inches?
a. 30%
b. 25%
c. 50%
d. 40%
e. none of the above

Q7-6 The property of metals which describes their resistance to indentation is called:
a. strength
b. toughness
c. hardness
d. ductility
e. none of the above

Q7-7 The type of testing which is used routinely for the qualification of welding procedures and welders is:
a. tensile strength
b. hardness
c. soundness
d. impact strength
e. all of the above

Q7-8 Of the following, which properties can be determined as a result of tensile testing?
a. ultimate tensile strength
b. ductility
c. percent elongation
d. yield strength
e. all of the above

Q7-9 The family of hardness tests which uses both a minor and major load is called:
a. Brinell
b. Vickers
c. Rockwell
d. Knoop
e none of the above

Q7-10 Which of the following tests are referred to as microhardness tests?
a. Rockwell
b. Vickers
c. Knoop
d. a and b above
e. b and c above

Q7-11 What type of test uses a weighted pendulum which strikes a notched test specimen?
a. Brinell test
b. fatigue test
c. tensile test
d. crack opening displacement (COD)
e. Charily impact test

Q7-12 Of the following, which is one of the most measurable features of a metal?
a. fatigue
b. hardness
c. soundness
d. tension
e. none of’the above

Q7-13 Which of the following is not considered a soundness test?
a. tensile
b. face bend
c. fillet break.
d. root bend
e. nick-break

Q7-14 The type of testing used to evaluate the type of microstructure present in a  metal is called:
a. tensile
b. hardness
c. toughness
d. metalloaraphic
e. none of the above

Q7-15 A 50 lb can of welding electrodes weighs approximately how many kg?
a. 227 kg
b. 2.3 kg
© 22.7 kg
d. 23,000 kg
e. none of the above

Q7-16 Which two metal properties are directly related for many steels?
a. impact strength and fatigue strength
b. tensile strength and ductility
c. tensile strength and hardness
d. toughness and fatigue, strength
e. none of the above

Q7-17 What is the wire feed speed which is measured to be 175 in./min?
a. 125 m/s
b. 74 mm/s
c. 7.4 mm/s
d. a and b above
e. b and c above

Q7-18 The property of metals which describes their ability to carry some type of load is:
a. strength
b. toughness
c. hardness
d. ductility
e none of the above

Q7-19 For less ductile metals, which method is used to determine the yield strength?
a. drop of beam
b. offset technique
c. stress-strain curve
d. abrupt yielding
e. none of the above

Q7-20 The ability of a metal to absorb energy is called:
a. strength
b. ductility
c. hardness
d. toughness
e. none of the above

Q7-21 A weld joint is measured and found to be 345 mm long. How long is that joint in terms of inches?
a. 135.8 in
b. 13.58 in
c. 8760 in %
d. 876 in
e. none of the above

Q7-22 Which of the following tests are used to verify the soundness of a weld?
a. nick break
b. fillet break
c. bend test
d. radiographic test
e. all of the above

Q7-23 With the SAW process we achieve a deposition rate of 19.7 kg/h. How many lb/h is this?
a. 434 lb/h
b. 43.41b/h
c. 87.5 lb/h
d. 8.9 lb/h
e. none of the above

Q7-24 Ultimate tensile strength can be determined using which of the following tests?
a. tensile
b. bend
c. Charpy
d. nick break
e. nil-ductility drop-weight

Q7-25 Calculation of percent elongation is determined after measuring the change in:
a. percent reduction of area
b. depth of indentation
c. diameter of indentation
d. cross sectional area
e. length between gage marks

Q7-26 With the GMAW process we use a wire feed speed of 170 mm/s. How many in./min his this?
a. 40.16 in/min
b. 53.7 in/min
c. 401.6 in/min
d. 537 in/min
e. none of the above

Q7-27 With the GTAW process, flow rates are measured at 22 L/min. How many ft3/h is this?
a. 10.4 ft3/h
b. 1.39 ft3/h
c. 46.6 ft3/h
d. 83.2 ft3/h
e. none of the above

Q7-28 Calculation of tensile strength is accomplished by dividing the tensile load by:
a. cross sectional area
b. percent elongation
c. percent reduction of area
d. gage length
e. none of the above

Q7-29 The metal property describing its freedom from imperfections is:
a. tensile.strength
b. soundness
c. impact strength
d. toughness
e. ductility

Q7-30 If a metal exhibits a great deal of elongation prior to falling when a tensile load is applied is said to have high:
a. tensile strength
b. hardness
c. impact strength
d. toughness
e. ductility

Q7-31 A specimen approximately 2″ long with a V -notch machined in the center of one of its sides is used for which of the following tests?
a. tensile
b. nil-ductility drop-weight
c, Charpy
d. bend
e. tuck break

Q7-32 A heat input of 1,500,000 Jim is how many Jlin?
a. 381 J/in
b. 3,810 J/in
c. 38,100 Pin
d. 381,000 J/in
e. none of the above

Q7-33 Which of the following properties can be determined from a tensile test?
a. ultimate tensile strength, yield strength, ductility
b. yield strength, ductility, toughness
c. ductility only
d. toughness only
e. all of the above

Q7-34 The force required to bend a steel bar is measured to be 890 N. That is how many lbf?
a. 200.3 lbf
b. 2003 lbf
c. 20 lbf
d. 550 lbf
e. none of the above

Q7-35 A coating was removed from a SMAW electrode. After weighing, it was found to have a mass of 2.4 oz. That is how many grams?
a. 68 g
b. 6.8 g
c. 0.008 g
d. 0.8 g
e. none of the above

Key: daadbceeceeaadccbabdbebaec-unknown-abec-unknown-a-unknown-unknown

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