Chapter 6 Practice Test

Question 1

The property of metals that describes their resistance to indentation is called:

a. strength
b. toughness
c. hardness
d. ductility
e. none of the above

Answer 1

c. hardness

Question 2

The property of metals that describes their ability to carry a load is:

a. strength
b. toughness
c. hardness
d. ductility
e. none of the above

Answer 2

a. strength

Question 3

Generally, as strength increases for carbon steels, the ductility:

a. increases
b. stays the same
c. decreases
d. is not related to strength
e. none of the above

Answer 3

c. decreases

Question 4

The property that describes the ability of a metal to deform when stressed is:

a. strength
b. toughness
c. hardness
d. ductility
e. none of the above

Answer 4

d. ductility

Question 5

The type of strength related to a metal's behavior when the load is applied in a cyclic manner
is:
a. tensile
b. compressive
c. torsional
d. impact
e. fatigue

Answer 5

e. fatigue

Question 6

The yield strength of a material is determined by:

a. impact testing
b. tensile testing
c. hardness testing
d. the offset method
e. b and d above

Answer 6

e. b and d above

Question 7

Which metal properties are directly related?

a. conductivity and strength
b. strength and ductility
c. strength and hardness
d. ductility and toughness
e. c and d above

Answer 7

e. c and d above

Question 8

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

Answer 8

d. toughness

Question 9

The metal property affected by the surface condition of the sample is:

a. tensile strength
b. UTS
c. hardness
d. fatigue strength
e. all of the above

Answer 9

e. all of the above

Question 10

Which alloying element is generally considered to have the most pronounced effect on the
properties and performance of carbon steel?
a. aluminum
b. carbon
c. manganese
d. chromium
e. none of the above

Answer 10

b. carbon

Question 11

Which alloying element is commonly added to steel to improve its corrosion resistance?

a. carbon
b. aluminum
c. silicon
d. chromium
e. none of the above

Answer 11

d. chromium

Question 12

Hydrogen in the molten weld metal can cause:

a. undercut
b. overlap
c. cracking
d. porosity
e. c and d above

Answer 12

e. c and d above

Question 13

Which property cannot be determined from a tensile test?

a. ultimate tensile strength
b. percent elongation
c. percent reduction of area
d. impact strength
e. yield strength

Answer 13

d. impact strength

Question 14

A metal’s ductility can be expressed as:

a. percent elongation
b. percent reduction of area
c. proportional limit
d. a and b above
e. b and c above

Answer 14

d. a and b above

Question 15

A tensile specimen having a cross sectional area of 0.25 square inches fails at a load of 15,250

pounds. What is its tensile strength? (Tensile Strength = LoadIArea)
a. 3813 psi
b. 61,000 psi
c. 6,lOOpsi
d. 58,500 psi
e. none of the above

Answer 15

b. 61,000 psi

Question 16

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 16

a. yield strength

Question 17

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% 1
b. 25%
c. 50%
d. 40%
e. none of the above

Answer 17

b. 25%

Question 18

The family of hardness tests that uses both a minor and major load is called:

a. Brinell
b. Vickers
c. Rockwell
d. Knoop
e. none of the above

Answer 18

c. Rockwell

Question 19

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 19

e. b and c above

Question 20

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

a. Brinell test
b. fatigue test
c. tensile test
d. microhardness test
e. Charpy impact test

Answer 20

e. Charpy impact test

Question 21

Endurance limit is an expression used for what type of testing?

a. fatigue
b. hardness
c. soundness
d. tension
e. none of the above

Answer 21

a. fatigue

Question 22

The metal property that relates to a metal’s deforming without failing is called:

a. tensile strength
b. ductility
c. hardness
d. toughness
e. none of the above

Answer 22

b. ductility

Question 23

Which test is not considered a ‘soundness’ test?

a. hardness
b. face bend
c. fillet break
d. root bend
e. nick break

Answer 23

a. hardness

Question 24

The type of testing used to evaluate the type of rnicrostructure present in a metal is called:

a. tensile
b. hardness
c. toughness
d. metallographic
e. none of the above

Answer 24

d. metallographic

Question 25

Which of the following tests can be used to judge the soundness of a weld?

a. nick break
b. side bend
c. face bend
d. fillet break
e. all of the above

Answer 25

e. all of the above

Question 26

Which of the following tests will generally be used to determine the behavior of a metal at a
specific temperature?
a. guided-bend test
b. root-bend test
c. Charpy impact test
d. transverse fillet weld shear test
e. all of the above

Answer 26

c. Charpy impact test

Question 27

With respect to the rolling direction of steel plate manufacture, which statement is true?

a. The strength is highest in the ‘Z’direction.
b. The strength is lowest in the ‘X’ direction.
c. The strength is highest in the ‘X’ direction.
d. The strength is highest in the ‘Y’ direction.
e. The strength is lowest in the ‘Y’ direction.

Answer 27

c. The strength is highest in the ‘X’ direction.

Question 28

The fillet weld break test is used to evaluate the:

a. quality of the fractured weld
b. ductility of the weld metal
c. impact strength of the weld
d. tensile strength of the base metal
e. none of the above

Answer 28

a. quality of the fractured weld

Question 29

The welding inspector is not concerned with the mechanical and chemical properties of metals.

a. true
b. false

Answer 29

b. false

Question 30

For plain carbon steels, their approximate tensile strength can be estimated by multiplying
their BHN by:
a. 400
b. 300
c. 100
d. 200
e. 500

Answer 30

e. 500

Question 31

Notch toughness and impact strength are not synonomous.

a. true
b. false

Answer 31

b. false

Question 32

Phosphorus and sulfur are added to carbon steel to improve:
a. ductility
b. toughness
c, weldability
d. impact strength
e. none of the above

Answer 32

e. none of the above

Question 33

To improve the low temperature properties of carbon steels, the most likely alloy addition
would be:
a. manganese
b. carbon
c. nickel
d. chromium
e. none of the above

Answer 33

c. nickel

Question 34

Hydrogen, oxygen, and nitrogen can all cause embrittlement in carbon steels.

a. true
b. false

Answer 34

a. true

Question 35

Gage marks on a tensile specimen are:

a. scratches caused by improper handling
b. marks caused by using a gage to measure sample area
c. spaced a set distance apart
d. used for calculating percent elongation
e. c and d above

Answer 35

e. c and d above

Question 36

The ‘offset method’ is used for determining which property?

a. yield strength
b. tensilestrength
c. hardness
d. fatigue strength
e. impact strength

Answer 36

a. yield strength

Question 37

Surface preparation is not an important step in destructive testing.

a. true
b. false

Answer 37

b. false

Question 38

The Brine11 hardness test is always a destructive test.

a. true
b. false

Answer 38

b. false

Question 39

In Charpy testing, the test temperature is:

a. not important
b. very important
c. not considered
d. never reported
e. none of the above

Answer 39

b. very important

Question 40

In Charpy testing, the test data can be reported as:

a. foot pounds energy absorbed
b. lateral expansion
c. percent shear
d. all of the above
e. offset data

Answer 40

d. all of the above

Question 41

The objective of the guided bend test is to break the sample.

a. true
b. false

Answer 41

b. false