ASNT Level 1 UT
the back-surface reflection.
1. The indication on the instrument display that represents the far boundary of material
being tested is called:
angulation.
2. In immersion testing, the position of the transducer is often varied by a manipulator to
transmit sound into the test part at various angles to the front surface. Such a procedure
is referred to as:
coaxial cable
3. The technical name for the cable that connects the ultrasonic instrument to the
transducer is:
calibration.
4. The process of standardizing an instrument or device by using a reference standard
is called:
longitudinal wave.
5. Another name for a compressional wave is:
surface waves.
6. Another name for rayleigh waves is :
a couplant.
7. A material used between the face of a transducer and the test surface to permit or
improve the transmission of ultrasonic vibrations from the transducer to the material
being tested is called:
crystal.
8. The piezoelectric material in a transducer that vibrates to produce ultrasonic waves is
called a
straight beam testing.
9. Ultrasonic testing of material where the probe is in direct contact with the material
being tested may be:
is one of the most efficient receivers of ultrasonic energy
10. An advantage of using lithium sulfate in transducers is that it:
25 MHz transducer
12. The transducer that contains the thinnest piezoelectric crystal is a:
1 MHz
13. Penetration of ultrasonic waves in a material is normally the function of test
frequency used. The greatest depth of penetration is provided by a frequency of
frequency and crystal size.
14. The amount of beam divergence from a crystal is primarily dependent on the
refraction.
15. When an ultrasonic beam passes through the interface between two dissimilar
materials at an angle, a new angle of sound travel takes place in the second material
due to:
two times
, 21. The velocity of longitudinal waves is approximately __________ the velocity of
shear waves in the same material.
25 MHz
27. Under most circumstances, which of the following frequencies would result in the
best resolving power?
A coarse-grained casting.
28. Which of the following materials of the same alloy is most like ly to produce the
greatest amount of sound attenuation over a given distance?
initial pulse.
29. In contact testing, the entry surface indication is sometimes referred to as the:
coarse-grained material.
30. An ultrasonic instrument display pattern containing a large number of low-level
indications (often referred to as grass or hash) could be caused by:
through-transmission testing
31. A test method employing two separate transducers on opposite surfaces of the
material being tested is called
frequency
32. The number of complete waves that pass a given point in a given period of time
(usually 1 s) is referred to as the
an interface.
33. The boundary between two different materials that are in contact with each other is
called:
longitudinal wave.
34. When the motion of the particles of a medium is transverse to the direction of
propagation, the wave being transmitted is called a:
25 MHz.
36. The "25 milion eycles per second" can be stated number as:
scanning.
37. Moving a transducer over a test surface either manually or automatically is referred
to as:
velocity
38. A term sound waves pass through various substances is: used in ultrasonics to
express the rate at which
vertical limit.
39. When an indication has reached the maximum signal height which can be displayed
or viewed on the display of an ultrasonic instrument, the indication is said to have
reached its:
angle beam testing.
40. An ultrasonic testing technique in which the transducer element is not parallel to the
test surface is called:
0.2 and 25 MHz
44. Most commercial ultrasonic testing is accomplished using frequencies betweern:
elapsed time or distance.
45. In an A-scan presentation, the horizontal baseline represents the
amount of ultrasonic sound energy returning to the transducer
the back-surface reflection.
1. The indication on the instrument display that represents the far boundary of material
being tested is called:
angulation.
2. In immersion testing, the position of the transducer is often varied by a manipulator to
transmit sound into the test part at various angles to the front surface. Such a procedure
is referred to as:
coaxial cable
3. The technical name for the cable that connects the ultrasonic instrument to the
transducer is:
calibration.
4. The process of standardizing an instrument or device by using a reference standard
is called:
longitudinal wave.
5. Another name for a compressional wave is:
surface waves.
6. Another name for rayleigh waves is :
a couplant.
7. A material used between the face of a transducer and the test surface to permit or
improve the transmission of ultrasonic vibrations from the transducer to the material
being tested is called:
crystal.
8. The piezoelectric material in a transducer that vibrates to produce ultrasonic waves is
called a
straight beam testing.
9. Ultrasonic testing of material where the probe is in direct contact with the material
being tested may be:
is one of the most efficient receivers of ultrasonic energy
10. An advantage of using lithium sulfate in transducers is that it:
25 MHz transducer
12. The transducer that contains the thinnest piezoelectric crystal is a:
1 MHz
13. Penetration of ultrasonic waves in a material is normally the function of test
frequency used. The greatest depth of penetration is provided by a frequency of
frequency and crystal size.
14. The amount of beam divergence from a crystal is primarily dependent on the
refraction.
15. When an ultrasonic beam passes through the interface between two dissimilar
materials at an angle, a new angle of sound travel takes place in the second material
due to:
two times
, 21. The velocity of longitudinal waves is approximately __________ the velocity of
shear waves in the same material.
25 MHz
27. Under most circumstances, which of the following frequencies would result in the
best resolving power?
A coarse-grained casting.
28. Which of the following materials of the same alloy is most like ly to produce the
greatest amount of sound attenuation over a given distance?
initial pulse.
29. In contact testing, the entry surface indication is sometimes referred to as the:
coarse-grained material.
30. An ultrasonic instrument display pattern containing a large number of low-level
indications (often referred to as grass or hash) could be caused by:
through-transmission testing
31. A test method employing two separate transducers on opposite surfaces of the
material being tested is called
frequency
32. The number of complete waves that pass a given point in a given period of time
(usually 1 s) is referred to as the
an interface.
33. The boundary between two different materials that are in contact with each other is
called:
longitudinal wave.
34. When the motion of the particles of a medium is transverse to the direction of
propagation, the wave being transmitted is called a:
25 MHz.
36. The "25 milion eycles per second" can be stated number as:
scanning.
37. Moving a transducer over a test surface either manually or automatically is referred
to as:
velocity
38. A term sound waves pass through various substances is: used in ultrasonics to
express the rate at which
vertical limit.
39. When an indication has reached the maximum signal height which can be displayed
or viewed on the display of an ultrasonic instrument, the indication is said to have
reached its:
angle beam testing.
40. An ultrasonic testing technique in which the transducer element is not parallel to the
test surface is called:
0.2 and 25 MHz
44. Most commercial ultrasonic testing is accomplished using frequencies betweern:
elapsed time or distance.
45. In an A-scan presentation, the horizontal baseline represents the
amount of ultrasonic sound energy returning to the transducer
