Question 1

On a fillet weld, underfill occurs when the face of the weld is more _____ than the code. ​

Accepted Answer

A)  flat​
B)  concave​
C)  convex​
D)  laminated​E) A) and B)
F) A) and C)

Question 2

The localized hardening of an arc strike is the result of the _____ effect of it by the surrounding metal. ​

Accepted Answer

A)  cooling​
B)  heating​
C)  quenching​
D)  hardening​E) A) and B)
F) A) and C)

Question 3

Inclusions can be grouped into two major types: linear slag inclusions and _____ inclusions. ​

Accepted Answer

A)  porosity​
B)  joint penetration​
C)  uniform​
D)  scattered​E) C) and D)
F) B) and D)

Question 4

Why may weld testing be delayed for a week or so? ​

Accepted Answer

Weld testing may be delayed fo...

Question 5

A _____ is anything that is not exactly like its surroundings. ​

Accepted Answer

A)  defect​
B)  discontinuity​
C)  flaw​
D)  weld pool​E) B) and D)
F) B) and C)

Question 6

Cylindrical porosity is often called a _____. ​

Accepted Answer

The answer of Cylindrical porosity is often called a _____....

Question 7

Overlap is also referred to as _____. ​

Accepted Answer

A)  hot lap​
B)  cold lap​
C)  undercut​
D)  underfill​E) C) and D)
F) B) and C)

Question 8

_____ become defects when they accidentally occur outside the weld groove. ​

Accepted Answer

The answer of _____ become defects when they accidentally occur...

Question 9

_____ is when one weld pass does not melt the surface of a previous weld pass. ​

Accepted Answer

A)  Incomplete fusion​
B)  Inadequate joint penetration ​
C)  Improper joint fit-up ​
D)  Inadequate agitation ​E) B) and D)
F) B) and C)

Question 10

_____ is an area of depression of the face or root of a weld where the filler metal did not completely fill the weld groove, so it is level with the surface of the pipe. ​

Accepted Answer

Underfill

Question 11

The two most common causes of porosity are improper welding techniques and _____. ​

Accepted Answer

A)  heat​
B)  shielding gas​
C)  nitrogen​
D)  contamination​E) A) and D)
F) A) and B)

Question 12

_____ are foreign objects not melted by the weld are that are left in the weld groove as weld metal is deposited over them. ​

Accepted Answer

The answer of _____ are foreign objects not melted by...

Question 13

_____ are the result of internal stresses within a weld or surrounding metal that exceed the ultimate strength of the metal. ​

Accepted Answer

A)  Cracks​
B)  Delaminations​
C)  Laminations​
D)  Overlaps​E) B) and C)
F) None of the above

Question 14

What are some of the surface impurities that can contaminate a weld and cause porosity? ​

Accepted Answer

Some of the surface impurities...

Question 15

Why can't the bubbles that make up porosity be seen? ​

Accepted Answer

The bubbles that make up poros...

Question 16

_____ refers to the small bubbles of gas that appear in solid weld metal. ​

Accepted Answer

A)  Porosity​
B)  Discontinuity​
C)  Defect​
D)  Flaw​E) B) and C)
F) A) and D)

Question 17

What is the difference between spherical porosity and cylindrical porosity? ​

Accepted Answer

Spherical porosity i...

Question 18

There are _____ major causes of incomplete fusion in pipe welding. ​

Accepted Answer

A)  two​
B)  three​
C)  four​
D)  five​E) A) and B)
F) A) and C)

Question 19

All welds have discontinuities and flaws, but they are not necessarily _____. ​

Accepted Answer

defects

Question 20

Name the four common causes of weld inclusions. ​

Accepted Answer

Four common causes of weld inclusions are improper joint cleaning between weld passes, improper groove preparation, joint design, and improper welding technique. ​

Exam 16: Weld Discontinuity and Defects

On a fillet weld, underfill occurs when the face of the weld is more _____ than the code. ​

Correct AnswerverifiedShow Answer

The localized hardening of an arc strike is the result of the _____ effect of it by the surrounding metal. ​

Correct AnswerverifiedShow Answer

Inclusions can be grouped into two major types: linear slag inclusions and _____ inclusions. ​

Correct AnswerverifiedShow Answer

Why may weld testing be delayed for a week or so? ​

Correct AnswerverifiedWeld testing may be delayed fo...View AnswerShow Answer

A _____ is anything that is not exactly like its surroundings. ​

Correct AnswerverifiedShow Answer

Cylindrical porosity is often called a _____. ​

Correct AnswerverifiedShow Answer

Overlap is also referred to as _____. ​

Correct AnswerverifiedShow Answer

_____ become defects when they accidentally occur outside the weld groove. ​

Correct AnswerverifiedShow Answer

_____ is when one weld pass does not melt the surface of a previous weld pass. ​

Correct AnswerverifiedShow Answer

_____ is an area of depression of the face or root of a weld where the filler metal did not completely fill the weld groove, so it is level with the surface of the pipe. ​

Correct AnswerverifiedUnderfill

The two most common causes of porosity are improper welding techniques and _____. ​

Correct AnswerverifiedShow Answer

_____ are foreign objects not melted by the weld are that are left in the weld groove as weld metal is deposited over them. ​

Correct AnswerverifiedShow Answer

_____ are the result of internal stresses within a weld or surrounding metal that exceed the ultimate strength of the metal. ​

Correct AnswerverifiedShow Answer

What are some of the surface impurities that can contaminate a weld and cause porosity? ​

Correct AnswerverifiedSome of the surface impurities...View AnswerShow Answer

Why can't the bubbles that make up porosity be seen? ​

Correct AnswerverifiedThe bubbles that make up poros...View AnswerShow Answer

_____ refers to the small bubbles of gas that appear in solid weld metal. ​

Correct AnswerverifiedShow Answer

What is the difference between spherical porosity and cylindrical porosity? ​

Correct AnswerverifiedSpherical porosity i...View AnswerShow Answer

There are _____ major causes of incomplete fusion in pipe welding. ​

Correct AnswerverifiedShow Answer

All welds have discontinuities and flaws, but they are not necessarily _____. ​

Correct Answerverifieddefects

Name the four common causes of weld inclusions. ​

Correct AnswerverifiedFour common causes of weld inclusions are improper joint cleaning between weld passes, improper groove preparation, joint design, and improper welding technique. ​

On a fillet weld, underfill occurs when the face of the weld is more _____ than the code.

Correct Answer
verified

The localized hardening of an arc strike is the result of the _____ effect of it by the surrounding metal.

Correct Answer
verified

Inclusions can be grouped into two major types: linear slag inclusions and _____ inclusions.

Correct Answer
verified

Why may weld testing be delayed for a week or so?

Correct Answer
verified
Weld testing may be delayed fo...
View Answer

A _____ is anything that is not exactly like its surroundings.

Correct Answer
verified

Cylindrical porosity is often called a _____.

Correct Answer
verified

Overlap is also referred to as _____.

Correct Answer
verified

_____ become defects when they accidentally occur outside the weld groove.

Correct Answer
verified

_____ is when one weld pass does not melt the surface of a previous weld pass.

Correct Answer
verified

_____ is an area of depression of the face or root of a weld where the filler metal did not completely fill the weld groove, so it is level with the surface of the pipe.

Correct Answer
verified
Underfill

The two most common causes of porosity are improper welding techniques and _____.

Correct Answer
verified

_____ are foreign objects not melted by the weld are that are left in the weld groove as weld metal is deposited over them.

Correct Answer
verified

_____ are the result of internal stresses within a weld or surrounding metal that exceed the ultimate strength of the metal.

Correct Answer
verified

What are some of the surface impurities that can contaminate a weld and cause porosity?

Correct Answer
verified
Some of the surface impurities...
View Answer

Why can't the bubbles that make up porosity be seen?

Correct Answer
verified
The bubbles that make up poros...
View Answer

_____ refers to the small bubbles of gas that appear in solid weld metal.

Correct Answer
verified

What is the difference between spherical porosity and cylindrical porosity?

Correct Answer
verified
Spherical porosity i...
View Answer

There are _____ major causes of incomplete fusion in pipe welding.

Correct Answer
verified

All welds have discontinuities and flaws, but they are not necessarily _____.

Correct Answer
verified
defects

Name the four common causes of weld inclusions.

Correct Answer
verified
Four common causes of weld inclusions are improper joint cleaning between weld passes, improper groove preparation, joint design, and improper welding technique.