ASNT Level 1 UT Study Guide Basic | All Answers are Correct
the back-surface reflection. Correct Answer: 1. The indication on the instrument display that
represents the far boundary of material being tested is called:
angulation. Correct Answer: 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 Correct Answer: 3. The technical name for the cable that connects the ultrasonic
instrument to the transducer is:
calibration. Correct Answer: 4. The process of standardizing an instrument or device by using a
reference standard is called:
longitudinal wave. Correct Answer: 5. Another name for a compressional wave is:
surface waves. Correct Answer: 6. Another name for rayleigh waves is :
a couplant. Correct Answer: 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. Correct Answer: 8. The piezoelectric material in a transducer that vibrates to produce
ultrasonic waves is called a
straight beam testing. Correct Answer: 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 Correct Answer: 10. An advantage of
using lithium sulfate in transducers is that it:
25 MHz transducer Correct Answer: 12. The transducer that contains the thinnest piezoelectric
crystal is a:
1 MHz Correct Answer: 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. Correct Answer: 14. The amount of beam divergence from a crystal
is primarily dependent on the
refraction. Correct Answer: 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 Correct Answer: 21. The velocity of longitudinal waves is approximately __________
the velocity of shear waves in the same material.
25 MHz Correct Answer: 27. Under most circumstances, which of the following frequencies
would result in the best resolving power?
A coarse-grained casting. Correct Answer: 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. Correct Answer: 29. In contact testing, the entry surface indication is sometimes
referred to as the:
coarse-grained material. Correct Answer: 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 Correct Answer: 31. A test method employing two separate
transducers on opposite surfaces of the material being tested is called
frequency Correct Answer: 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. Correct Answer: 33. The boundary between two different materials that are in
contact with each other is called:
longitudinal wave. Correct Answer: 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. Correct Answer: 36. The "25 milion eycles per second" can be stated number as:
scanning. Correct Answer: 37. Moving a transducer over a test surface either manually or
automatically is referred to as:
velocity Correct Answer: 38. A term sound waves pass through various substances is: used in
ultrasonics to express the rate at which
vertical limit. Correct Answer: 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. Correct Answer: 40. An ultrasonic testing technique in which the transducer
element is not parallel to the test surface is called:
0.2 and 25 MHz Correct Answer: 44. Most commercial ultrasonic testing is accomplished using
frequencies betweern:
the back-surface reflection. Correct Answer: 1. The indication on the instrument display that
represents the far boundary of material being tested is called:
angulation. Correct Answer: 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 Correct Answer: 3. The technical name for the cable that connects the ultrasonic
instrument to the transducer is:
calibration. Correct Answer: 4. The process of standardizing an instrument or device by using a
reference standard is called:
longitudinal wave. Correct Answer: 5. Another name for a compressional wave is:
surface waves. Correct Answer: 6. Another name for rayleigh waves is :
a couplant. Correct Answer: 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. Correct Answer: 8. The piezoelectric material in a transducer that vibrates to produce
ultrasonic waves is called a
straight beam testing. Correct Answer: 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 Correct Answer: 10. An advantage of
using lithium sulfate in transducers is that it:
25 MHz transducer Correct Answer: 12. The transducer that contains the thinnest piezoelectric
crystal is a:
1 MHz Correct Answer: 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. Correct Answer: 14. The amount of beam divergence from a crystal
is primarily dependent on the
refraction. Correct Answer: 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 Correct Answer: 21. The velocity of longitudinal waves is approximately __________
the velocity of shear waves in the same material.
25 MHz Correct Answer: 27. Under most circumstances, which of the following frequencies
would result in the best resolving power?
A coarse-grained casting. Correct Answer: 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. Correct Answer: 29. In contact testing, the entry surface indication is sometimes
referred to as the:
coarse-grained material. Correct Answer: 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 Correct Answer: 31. A test method employing two separate
transducers on opposite surfaces of the material being tested is called
frequency Correct Answer: 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. Correct Answer: 33. The boundary between two different materials that are in
contact with each other is called:
longitudinal wave. Correct Answer: 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. Correct Answer: 36. The "25 milion eycles per second" can be stated number as:
scanning. Correct Answer: 37. Moving a transducer over a test surface either manually or
automatically is referred to as:
velocity Correct Answer: 38. A term sound waves pass through various substances is: used in
ultrasonics to express the rate at which
vertical limit. Correct Answer: 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. Correct Answer: 40. An ultrasonic testing technique in which the transducer
element is not parallel to the test surface is called:
0.2 and 25 MHz Correct Answer: 44. Most commercial ultrasonic testing is accomplished using
frequencies betweern:
