CWB 2 Visual Weld Inspector Exam With
Complete Questions And Correct Answers All
Graded A+
Increasing the included angle of a weld joint preparation will generally - <<ANSWER
>>Increase the amount of the distortion because the width of the weld face and weld
volume are both increased
When making a fillet weld of a given size, angular distortion is worse - <<ANSWER >>when
more, smaller beads are deposited
Mechanical means of distortion control include but are not limited to - <<ANSWER >>strong
backs
When welding heavy plates it is a good idea to have a small root opening rather than butting
the parts tightly together because - <<ANSWER >>The small root opening will allow plates to
move together as the weld shrinks and help to prevent cracks
Mechanical straightening is the most controllable method of correcting distortion. What is a
significant limitation of mechanical straightening - <<ANSWER >>mechanical straightening
can crack the assembly
The results of uneven heating can be used to our benefit when a change is shape is desired;
one example of this is called: - <<ANSWER >>Cambering
,Reheating of the a flame formed area containing residual stresses is ineffective because -
<<ANSWER >>reheating is acceptable
When using heat or wedges - <<ANSWER >>apply heat to the short side of a curved object to
stretch it
Weld metal shrinkage is - <<ANSWER >>proportional to amount of weld metal
Longitudinal residual stress may be - <<ANSWER >>As high as the yield stress of base metal
There is residual stress in a plate with mill rolled edges without any additional heat -
<<ANSWER >>
S = 0.18 Aw / (t + 0.05d) - <<ANSWER >>Transverse shrinkage - butt welds
S = 0.25 Aw / Ar - <<ANSWER >>Longitudinal - butt welds
In seam welding, what is the simplest form of distortion control - <<ANSWER >>Start the
weld some distance from the end of the joint making a short weld first
Does the number of welding passes affect distortion - <<ANSWER >>Yes. The number of
passes does affect distortion
Does the number of arc travel speed affect distortion - <<ANSWER >>Yes. Arc travel speed
affect distortion
Is heat distribution around the welding arc regardless of its travel speed - <<ANSWER >>No.
The heat distribution will change based on travel speed
,Distortion maybe partially or fully controlled by mechanical means using - <<ANSWER
>>Rigid clamping or fixturing or pre-bending or setting, or pre-weld heat treatment
In welded assembly with both groove and fillet welds, what should weld should be done first
- <<ANSWER >>Groove welds then fillet welds.
What is the advantage of intermitted fillet weld - <<ANSWER >>Less distortion
What is the advantage of using subassemblies when feasible - <<ANSWER >>Reduces
cumulative tolerances. Easy to handle for large structures
Balancing welds around the neutral axis can reduce - <<ANSWER >>distortion
Reducing the root opening of a groove joint can reduce - <<ANSWER >>shrinkage
In rigid alignment and complete joint restraint by strongbacks, clamps and similar devices a
recommended practice - <<ANSWER >>No, they are not recommended practice
Excessive root face in plate preparation should be avoided - <<ANSWER >>Correct, it should
be avoided
The contraction effects in the weld metal that are of greater magnitude and, therefore more
serious are - <<ANSWER >>Transverse
What is the maximum temperature in heat straightening or forming of low alloy steels -
<<ANSWER >>650 C
When heated members cools non-uniformly - <<ANSWER >>the portions that cool first of
into compression and the portions that cool last go into tension
, In flame forming, if the temperatures is much higher than 650 C it can cause damage to the
base metal - <<ANSWER >>TRUE
In flame straightening, If the temperature is too low the member will not be straighted, why
- <<ANSWER >>insufficient to produce upsetting
in flame straightening or forming of low alloy steel members, what color should be watched
- <<ANSWER >>A dull Cherry red
What is proportional to dimensions of the heated area - <<ANSWER >>expansion and
contraction
To reduce the amount of angular distortion you should - <<ANSWER >>Increase the travel
speed, reduce the angle of preparation, pre-heat the metal
When a structural member has been bent sharply, it can be straightened by heating -
<<ANSWER >>A vee shaped area at the point of the greatest bend, with the top of the vee at
the point of greatest bend.
Of the many mechanical means of controlling distortion, what will have the least effect of
residual stress - <<ANSWER >>Pre-set the plates to allow recovery of angular distortion
Decreasing the number of weld beads in a specific weld will - <<ANSWER >>Reduce the
transverse shrinkage
The neutral axis is - <<ANSWER >>line on which there will be neither tension nor
compression when the piece is flexed or bent
When expansion and contraction are prevented, heating and cooling may cause - <<ANSWER
>>Failure when the metal is not sufficiently ductile
Complete Questions And Correct Answers All
Graded A+
Increasing the included angle of a weld joint preparation will generally - <<ANSWER
>>Increase the amount of the distortion because the width of the weld face and weld
volume are both increased
When making a fillet weld of a given size, angular distortion is worse - <<ANSWER >>when
more, smaller beads are deposited
Mechanical means of distortion control include but are not limited to - <<ANSWER >>strong
backs
When welding heavy plates it is a good idea to have a small root opening rather than butting
the parts tightly together because - <<ANSWER >>The small root opening will allow plates to
move together as the weld shrinks and help to prevent cracks
Mechanical straightening is the most controllable method of correcting distortion. What is a
significant limitation of mechanical straightening - <<ANSWER >>mechanical straightening
can crack the assembly
The results of uneven heating can be used to our benefit when a change is shape is desired;
one example of this is called: - <<ANSWER >>Cambering
,Reheating of the a flame formed area containing residual stresses is ineffective because -
<<ANSWER >>reheating is acceptable
When using heat or wedges - <<ANSWER >>apply heat to the short side of a curved object to
stretch it
Weld metal shrinkage is - <<ANSWER >>proportional to amount of weld metal
Longitudinal residual stress may be - <<ANSWER >>As high as the yield stress of base metal
There is residual stress in a plate with mill rolled edges without any additional heat -
<<ANSWER >>
S = 0.18 Aw / (t + 0.05d) - <<ANSWER >>Transverse shrinkage - butt welds
S = 0.25 Aw / Ar - <<ANSWER >>Longitudinal - butt welds
In seam welding, what is the simplest form of distortion control - <<ANSWER >>Start the
weld some distance from the end of the joint making a short weld first
Does the number of welding passes affect distortion - <<ANSWER >>Yes. The number of
passes does affect distortion
Does the number of arc travel speed affect distortion - <<ANSWER >>Yes. Arc travel speed
affect distortion
Is heat distribution around the welding arc regardless of its travel speed - <<ANSWER >>No.
The heat distribution will change based on travel speed
,Distortion maybe partially or fully controlled by mechanical means using - <<ANSWER
>>Rigid clamping or fixturing or pre-bending or setting, or pre-weld heat treatment
In welded assembly with both groove and fillet welds, what should weld should be done first
- <<ANSWER >>Groove welds then fillet welds.
What is the advantage of intermitted fillet weld - <<ANSWER >>Less distortion
What is the advantage of using subassemblies when feasible - <<ANSWER >>Reduces
cumulative tolerances. Easy to handle for large structures
Balancing welds around the neutral axis can reduce - <<ANSWER >>distortion
Reducing the root opening of a groove joint can reduce - <<ANSWER >>shrinkage
In rigid alignment and complete joint restraint by strongbacks, clamps and similar devices a
recommended practice - <<ANSWER >>No, they are not recommended practice
Excessive root face in plate preparation should be avoided - <<ANSWER >>Correct, it should
be avoided
The contraction effects in the weld metal that are of greater magnitude and, therefore more
serious are - <<ANSWER >>Transverse
What is the maximum temperature in heat straightening or forming of low alloy steels -
<<ANSWER >>650 C
When heated members cools non-uniformly - <<ANSWER >>the portions that cool first of
into compression and the portions that cool last go into tension
, In flame forming, if the temperatures is much higher than 650 C it can cause damage to the
base metal - <<ANSWER >>TRUE
In flame straightening, If the temperature is too low the member will not be straighted, why
- <<ANSWER >>insufficient to produce upsetting
in flame straightening or forming of low alloy steel members, what color should be watched
- <<ANSWER >>A dull Cherry red
What is proportional to dimensions of the heated area - <<ANSWER >>expansion and
contraction
To reduce the amount of angular distortion you should - <<ANSWER >>Increase the travel
speed, reduce the angle of preparation, pre-heat the metal
When a structural member has been bent sharply, it can be straightened by heating -
<<ANSWER >>A vee shaped area at the point of the greatest bend, with the top of the vee at
the point of greatest bend.
Of the many mechanical means of controlling distortion, what will have the least effect of
residual stress - <<ANSWER >>Pre-set the plates to allow recovery of angular distortion
Decreasing the number of weld beads in a specific weld will - <<ANSWER >>Reduce the
transverse shrinkage
The neutral axis is - <<ANSWER >>line on which there will be neither tension nor
compression when the piece is flexed or bent
When expansion and contraction are prevented, heating and cooling may cause - <<ANSWER
>>Failure when the metal is not sufficiently ductile
