M7: QUALIFICATION & METALURGY

Question 1

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

Answer 1

Q7-1 Which property cannot be determined from a tensile test?

D?

Question 2

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

Answer 2

Q7-2 The property which describes the ability of a metal to deform or resist some applied load is:

A. strength

Question 3

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

Answer 3

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

Question 4

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

Answer 4

Q7-4 Which of the following is an expression for a metal’s ductility?

D. a and b above

a. percent elongation
b. percent reduction of area

Question 5

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

Answer 5

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?

B. 25%

Question 6

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

Answer 6

Q7-6 The property of metals which describes their resistance to indentation is called:

C. hardness

Question 7

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

Answer 7

Q7-7 The type of testing which is used routinely for the qualification of welding procedures and welders is:

E. all of the above

a. tensile strength
b. hardness
c. soundness
d. impact strength

Question 8

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

Answer 8

Q7-8 Of the following, which properties can be determined as a result of tensile testing?

E. all of the above

a. ultimate tensile strength
b. ductility
c. percent elongation
d. yield strength

Question 9

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

Answer 9

Q7-9 The family of hardness tests which uses both a minor and major load is called:

C. Rockwell

Question 10

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

Answer 10

Q7-10 Which of the following tests are referred to as microhardness tests?

E. b and c above

b. Vickers
c. Knoop

Question 11

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

Answer 11

Q7-11 What type of test uses a weighted pendulum which strikes a notched test specimen?

E. Charily impact test

Question 12

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

Answer 12

Q7-12 Of the following, which is one of the most measurable features of a metal?

A. fatigue

Question 13

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

Answer 13

Q7-13 Which of the following is not considered a soundness test?

A. tensile

Question 14

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

Answer 14

Q7-14 The type of testing used to evaluate the type of microstructure present in a metal is called:

D. metalloaraphic

Question 15

Q7-15 A 50 lb can of welding electrodes weighs approximately how many kg?

a. 227 kg
b. 2.3 kg
c. 22.7 kg
d. 23,000 kg
e. none of the above

Answer 15

Q7-15 A 50 lb can of welding electrodes weighs approximately how many kg?

C. 22.7 kg

Question 16

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

Answer 16

Q7-16 Which two metal properties are directly related for many steels?

C. tensile strength and hardness

Question 17

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

Answer 17

Q7-17 What is the wire feed speed which is measured to be 175 in./min?

B. 74 mm/s

Question 18

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

Answer 18

Q7-18 The property of metals which describes their ability to carry some type of load is:

A. strength

Question 19

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

Answer 19

Q7-19 For less ductile metals, which method is used to determine the yield strength?

B. offset technique

Question 20

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

Answer 20

Q7-20 The ability of a metal to absorb energy is called:

D. toughness

Question 21

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

Answer 21

Q7-21 A weld joint is measured and found to be 345 mm long. How long is that joint in terms of inches?

B. 13.58 in

Question 22

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

Answer 22

Q7-22 Which of the following tests are used to verify the soundness of a weld?

E. all of the above

a. nick break
b. fillet break
c. bend test
d. radiographic test

Question 23

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

Answer 23

Q7-24 Ultimate tensile strength can be determined using which of the following tests?

A. tensile

Question 24

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

Answer 24

Q7-25 Calculation of percent elongation is determined after measuring the change in:

E. length between gage marks

Question 25

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

Answer 25

Q7-26 With the GMAW process we use a wire feed speed of 170 mm/s. How many in./min his this? C. 401.6 in/min

Question 26

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

Answer 26

Q7-27 With the GTAW process, flow rates are measured at 22 L/min. How many ft3/h is this? ?

Question 27

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

Answer 27

Q7-28 Calculation of tensile strength is accomplished by dividing the tensile load by: A. cross sectional area

Question 28

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

Answer 28

Q7-29 The metal property describing its freedom from imperfections is: B. soundness

Question 29

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

Answer 29

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: E. ductility

Question 30

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

Answer 30

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? C. Charpy

Question 31

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

Answer 31

Q7-32 A heat input of 1,500,000 Jim is how many Jlin? ?

Question 32

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

Answer 32

Q7-33 Which of the following properties can be determined from a tensile test? A. ultimate tensile strength, yield strength, ductility

Question 33

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

Answer 33

Q7-34 The force required to bend a steel bar is measured to be 890 N. That is how many lbf? ?

Question 34

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

Answer 34

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? ?

Question 35

Key:

Answer 35

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Question 36

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

Answer 36

Q7-23 With the SAW process we achieve a deposition rate of 19.7 kg/h. How many lb/h is this? B. 43.41b/h