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Flashcards in Chapter 9 practice test. Deck (14)
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1

A discontinuity is:
a. always a defect
b. always a reject
c. always acceptable
d. rejectable if it exceeds code limits
e. none of the above

d. rejectable if it exceeds code limits

2

The criticality of a particular weld discontinuity can be judged on the basis of:
a. whether it is surface or subsurface.
b. whether it is linear or nonlinear.
c. whether it has a sharp end condition.
d. all of the above
e. none of the above

d. all of the above

3

What discontinuity is generally considered to be the most severe?
a. porosity
b. incomplete fusion
c. slag inclusion
d. crack
e. arc strike

d. crack

4

Which of the following discontinuities is less likely to be seen visually?
a. toe crack
b. undercut
c. lamellar tear
d. overlap
e. none of the above

c. lamellar tear

5

Underbead cracks can result from which of the following welding practices?
a. use of wet electrodes
b. welding on contaminated steels
c. welding over paint
d. all of the above
e. none of the above

d. all of the above

6

The weld discontinuity that results from improper termination of the weldmg arc is referred to
as:
a. undercut
b. overlap
c. crater crack
d. incomplete fusion
e. all of the above

c. crater crack

7

Of the following processes which is unlikely to have slag inclusions in a completed weld?
a. SMAW
b. PAW
c. FCAW
d. SAW
e. none of the above

b. PAW

8

The discontinuity that results from the entrapment of gas within the weld cross section is
referred to as:
a. crack
b. slag inclusion
c. incomplete fusion
d. porosity
e. none of the above

d. porosity

9

What weld discontinuity results when the welder travels too slowly, causing excess weld metal to flow out of the joint and lay on the base metal surface without fusing?
a. undercut
b. underfill
c. overlap
d. incomplete fusion
e. none of the above

c. overlap

10

What weld metal discontinuity results when the welder fails to completely fill the weld
groove?
a. underfill
b. undercut
c. overlap
d. incomplete fusion
e. none of the above

a. underfill

11

Excessive weld metal buildup on a groove weld is referred to as:
a. excess convexity
b. excess weld reinforcement
c. overfill
d. all of the above
e. none of the above

b. excess weld reinforcement

12

The weld discontinuity that results from the initiation of the welding arc outside the weld joint
is referred to as:
a. incomplete fusion
b. undercut
c. overlap
d. scratch start
e. arc strike

e. arc strike

13

What weld discontinuity shows up as a light region on a radiograph?
a. porosity
b. tungsten inclusion
c. slag inclusion
d. a and b above
e. b and c above

b. tungsten inclusion

14

Which of the following is not a base metal discontinuity, resulting from improper steelmaking
practices?
a. lamination
b. lamellar tear
c. seam
d. pipe shrinkage
e. none of the above

b. lamellar tear