WELD 250/ GTAW REVIEW TEST QUESTIONS
An oxide layer on aluminum is ____, while on iron it is ____.
Select one:
a.
White, reddish
b.
Black, reddish
c.
Reddish, grey
d.
White, black - Answer -The correct answer is: Black, reddish
Question 2
Correct
What does the 480 refer to in the filler rod designation ER480S-2?
Select one:
a.
weld specification
b.
filler alloy
c.
weld classification
d.
tensile Strength - Answer -.
The correct answer is: tensile Strength
Question 3
Incorrect
The end of the pipe is prepared with a ____ bevel.
Select one:
a.
30 degrees
b.
15 degrees
Question 4
Correct - Answer -
How can a welder improve the shielding gas coverage of a weld?
Select one:
a.
Use higher shielding gas flow rate
b.
Use a low amperage setting to avoid arc blow
c.
,Weld as fast as possible
d.
Hold the torch as close and perpendicular as possible - Answer -The correct answer is:
Hold the torch as close and perpendicular as possible
Question 5
Correct
Which of the following is a way to minimize erosion of the tungsten electrode?
Select one:
a.
Using DCEN
b.
Using as small a size of tungsten electrode as possible
c.
Using as high current as possible
d.
Using an air-cooled torch - Answer -The correct answer is: Using DCEN
Question 6
Correct
How is carbide precipitation controlled using the GTAW process stainless steel?
Select one:
a.
set up a backing purge
b.
use a silicon-based filler rod
c.
minimize heat input
d.
maximize heat input - Answer -.
The correct answer is: minimize heat input
Question 7
Correct
If the end of the filler rod is removed from the shielding gas protection, ____.
Select one:
a.
It will oxidize rapidly
b.
Turbulence will increase
c.
Air will mix with the shielding gas
d.
It will cool rapidly - Answer -The correct answer is: It will oxidize rapidly
Question 8
Correct
, The term "TIG" stands for?
Select one:
a.
torch-inserted gas
b.
torch-integrated gas
c.
tungsten-inert gas
d.
tungsten-integrated gas - Answer -.
The correct answer is: tungsten-inert gas
Question 9
Correct
_________ is formed when ultraviolet radiation decomposes chlorinated hydrocarbon.
Select one:
a.
Carbon dioxide
b.
Argon
c.
Phosgene
d.
Ozone - Answer -.
The correct answer is: Phosgene
Question 10
Correct
The problems associated with hot shortness is aluminum welding can be averted by
Select one:
a.
reducing your travel speed
b.
controlling the composition of the weld puddle
c.
using DCEN
d.
increasing the root gap in the joint design - Answer -.
The correct answer is: controlling the composition of the weld puddle
Question 11
Correct
The high frequency may be set so that it ______________for DC and
________________ for AC.
Select one:
An oxide layer on aluminum is ____, while on iron it is ____.
Select one:
a.
White, reddish
b.
Black, reddish
c.
Reddish, grey
d.
White, black - Answer -The correct answer is: Black, reddish
Question 2
Correct
What does the 480 refer to in the filler rod designation ER480S-2?
Select one:
a.
weld specification
b.
filler alloy
c.
weld classification
d.
tensile Strength - Answer -.
The correct answer is: tensile Strength
Question 3
Incorrect
The end of the pipe is prepared with a ____ bevel.
Select one:
a.
30 degrees
b.
15 degrees
Question 4
Correct - Answer -
How can a welder improve the shielding gas coverage of a weld?
Select one:
a.
Use higher shielding gas flow rate
b.
Use a low amperage setting to avoid arc blow
c.
,Weld as fast as possible
d.
Hold the torch as close and perpendicular as possible - Answer -The correct answer is:
Hold the torch as close and perpendicular as possible
Question 5
Correct
Which of the following is a way to minimize erosion of the tungsten electrode?
Select one:
a.
Using DCEN
b.
Using as small a size of tungsten electrode as possible
c.
Using as high current as possible
d.
Using an air-cooled torch - Answer -The correct answer is: Using DCEN
Question 6
Correct
How is carbide precipitation controlled using the GTAW process stainless steel?
Select one:
a.
set up a backing purge
b.
use a silicon-based filler rod
c.
minimize heat input
d.
maximize heat input - Answer -.
The correct answer is: minimize heat input
Question 7
Correct
If the end of the filler rod is removed from the shielding gas protection, ____.
Select one:
a.
It will oxidize rapidly
b.
Turbulence will increase
c.
Air will mix with the shielding gas
d.
It will cool rapidly - Answer -The correct answer is: It will oxidize rapidly
Question 8
Correct
, The term "TIG" stands for?
Select one:
a.
torch-inserted gas
b.
torch-integrated gas
c.
tungsten-inert gas
d.
tungsten-integrated gas - Answer -.
The correct answer is: tungsten-inert gas
Question 9
Correct
_________ is formed when ultraviolet radiation decomposes chlorinated hydrocarbon.
Select one:
a.
Carbon dioxide
b.
Argon
c.
Phosgene
d.
Ozone - Answer -.
The correct answer is: Phosgene
Question 10
Correct
The problems associated with hot shortness is aluminum welding can be averted by
Select one:
a.
reducing your travel speed
b.
controlling the composition of the weld puddle
c.
using DCEN
d.
increasing the root gap in the joint design - Answer -.
The correct answer is: controlling the composition of the weld puddle
Question 11
Correct
The high frequency may be set so that it ______________for DC and
________________ for AC.
Select one:
