ASNT BASIC LEVEL 3 EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS | LATEST VERSION 2025/2026.
What are the minimum and maximum solder temperatures? - ANS One for the answers was
from 250-450°F which is less than 850°F where brazing starts.
What temperature does brazing start? - ANS 850°F
1 curie(Ci)=3.7x10^10 becquerel(Bq) - ANS Conversion of Curie to Bq
A UT inspection that uses two transducers on one side of the part- This technique is known? -
ANS Pitch/Catch
A UT angle beam inspection is most apt to miss what? - ANS Laminations parallel to the
surface. Watch out for one answer as it has perpendicular to the surface and angle beam can
see this type of indication.
A UT inspection that utilizes a diagram made from the same size flat bottom holes at different
distances? This is known as? - ANS A DAC curve. Whether it is brought to horizontal, or left
as a curved line, it is known as a reference line.
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,What would amperage used for prod spacing for material thickness of one inch using a spacing
of five inches? - ANS If material is thicker that 3/4", the normal amperages are considered to
be 125 amperages for each inch of spacing. Therefore, the answer would be 125 x 5= 625 amps.
The answer was 500- 625 amps. Note: if material is thinner than 3/4", the amperage is 90-100
amps per inch, or 400-500 amps.
What type of current is usually used for portable magnetic particle probe? - ANS Half wave
DC (Mean Amps). Some MT probes have switch to allow either AC(RMS amps) or HWDC(Mean
amps). They're also probes that only uses AC.
What advantage of a lost wax casting over the other types of casting processes?> -
ANS Usually casting doesn't require machining.
A die casting molds utilize the technique of ? - ANS Metal being inserted under pressure
A type of welding without a third metal is? - ANS E.B. Weld(Electron Beam), Friction Stir
welding
Oldest, most basic form of welding? - ANS Heliarc
Which method uses an exact sample with the defect sizes? - ANS Radiography-penetrameter
which type of discipline studies effects of discontinuity sizing? - ANS Fracture Analysis
In RT, an intensity at 25" is 200 mR/Hr. What is the intensity at 150" - ANS Inverse Square
Law. 36 mR/hr
If in RT, I move to 24" to 12", how much greater is the intensity? - ANS 4x as much
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, What happens if I increase magnification in a visual examination? - ANS Lose the field of view
Which MT technique leaves the strongest residual in a long beam that needs demagnetization?
- ANS Circular magnetism doesn't go into the environment and therefore the most difficult to
demagnetize because it must first be converted to longitudinal mag. Strongest residual field
bearing into the environment, then the answer would be longitudinal.
Part is to be inspected in a coil. Where is the maximum flux? - ANS At the inside surface of
the coil
How can you tell the difference between 3400 stainless steel vs 4400 stainless steel? -
ANS Magnetization
Austenitic SS will not magnetize, this is the 3400 SS.
Martin tic SS will somewhat magnetize, this is the 4400 SS.
Martin Tic and Nickle Alloys have what properties associated with them? - ANS Magnetizing
properties
Austenitic SS are not magnetic .
Martin tic are paramagnetic and some can be magnetized. Nickle is a ferro-magnetic material.
What is the best possible conductor? - ANS Silver(pure)
To SNT-TC-1A, if an employee leaves the employer, his/her certification is? - ANS Terminated
immediately
Steel cannot be welded to? - ANS Aluminum
Dissimilar material to steel. If welded together, anododic corrosion is immediately established.
What is it called when one metal is coated by another? - ANS Cladding
3 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS WITH 100% CORRECT
ANSWERS | LATEST VERSION 2025/2026.
What are the minimum and maximum solder temperatures? - ANS One for the answers was
from 250-450°F which is less than 850°F where brazing starts.
What temperature does brazing start? - ANS 850°F
1 curie(Ci)=3.7x10^10 becquerel(Bq) - ANS Conversion of Curie to Bq
A UT inspection that uses two transducers on one side of the part- This technique is known? -
ANS Pitch/Catch
A UT angle beam inspection is most apt to miss what? - ANS Laminations parallel to the
surface. Watch out for one answer as it has perpendicular to the surface and angle beam can
see this type of indication.
A UT inspection that utilizes a diagram made from the same size flat bottom holes at different
distances? This is known as? - ANS A DAC curve. Whether it is brought to horizontal, or left
as a curved line, it is known as a reference line.
1 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,What would amperage used for prod spacing for material thickness of one inch using a spacing
of five inches? - ANS If material is thicker that 3/4", the normal amperages are considered to
be 125 amperages for each inch of spacing. Therefore, the answer would be 125 x 5= 625 amps.
The answer was 500- 625 amps. Note: if material is thinner than 3/4", the amperage is 90-100
amps per inch, or 400-500 amps.
What type of current is usually used for portable magnetic particle probe? - ANS Half wave
DC (Mean Amps). Some MT probes have switch to allow either AC(RMS amps) or HWDC(Mean
amps). They're also probes that only uses AC.
What advantage of a lost wax casting over the other types of casting processes?> -
ANS Usually casting doesn't require machining.
A die casting molds utilize the technique of ? - ANS Metal being inserted under pressure
A type of welding without a third metal is? - ANS E.B. Weld(Electron Beam), Friction Stir
welding
Oldest, most basic form of welding? - ANS Heliarc
Which method uses an exact sample with the defect sizes? - ANS Radiography-penetrameter
which type of discipline studies effects of discontinuity sizing? - ANS Fracture Analysis
In RT, an intensity at 25" is 200 mR/Hr. What is the intensity at 150" - ANS Inverse Square
Law. 36 mR/hr
If in RT, I move to 24" to 12", how much greater is the intensity? - ANS 4x as much
2 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What happens if I increase magnification in a visual examination? - ANS Lose the field of view
Which MT technique leaves the strongest residual in a long beam that needs demagnetization?
- ANS Circular magnetism doesn't go into the environment and therefore the most difficult to
demagnetize because it must first be converted to longitudinal mag. Strongest residual field
bearing into the environment, then the answer would be longitudinal.
Part is to be inspected in a coil. Where is the maximum flux? - ANS At the inside surface of
the coil
How can you tell the difference between 3400 stainless steel vs 4400 stainless steel? -
ANS Magnetization
Austenitic SS will not magnetize, this is the 3400 SS.
Martin tic SS will somewhat magnetize, this is the 4400 SS.
Martin Tic and Nickle Alloys have what properties associated with them? - ANS Magnetizing
properties
Austenitic SS are not magnetic .
Martin tic are paramagnetic and some can be magnetized. Nickle is a ferro-magnetic material.
What is the best possible conductor? - ANS Silver(pure)
To SNT-TC-1A, if an employee leaves the employer, his/her certification is? - ANS Terminated
immediately
Steel cannot be welded to? - ANS Aluminum
Dissimilar material to steel. If welded together, anododic corrosion is immediately established.
What is it called when one metal is coated by another? - ANS Cladding
3 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
