ASNT UT LEVEL I+II NEWEST 2025 EXAM WITH CORRECT
AND DETAILED ANWERS FROM AVERIFIED SOURCE
GRADED A+
Vibration is (two things): - back and forth movement
energy in motion
The indication on the cathode ray tube(CRT) which represents the far boundary of the
material being tested is called: - Back surface reflection
The cable that connects the ultrasonic instrument to the search unit is specially
designed so that one conductor is centered inside another. The technical name for such
a cable is: - coaxial cable
Another name for compressional wave is: - longitudinal wave
Another name for rayleigh waves is: - surface waves
A transducer is a ______________ material in a search unit which vibrates to produce
ultrasonic waves - piezoelectric
Which of the following search units would contain the thinnest quartz crystal?
A. 1-megahertz
B. 5-megahertz
C. 15-megahertz
D. 25-megahertz - 25-megahertz
A 25-megahertz search unit would most likely be used during: - Immersion testing
The amount of beam divergence from a crystal is primarily dependent on the: -
frequency and crystal size
When an ultrasonic beam passes through the interface between two dissimilar materials
at an angle, the new angle of sound travel takes place in the second material due to: -
refraction
under most circumstances, which of the following frequencies would result in the best
resolving power?
1megahertz
5megahertz
10megahertz
,25megahertz - 25 megahertz
An advantage of using lithium sulfate in search units is that: - it is one of the most
efficient receivers of ultrasonic energy
Which of the following materials of the same alloy is most likely to produce the greatest
amount of sound attenuation over a given distance? - A coarse grained casting
In contact testing, the entry surface indication is sometimes referred to as: - The initial
pulse OR the "main bang" or transmitter pulse
A screen pattern containing a large number of low-level indications (often referred to as
"hash") could be caused by: - Coarse grained material
A test method employing two separate search units on opposite surfaces of the material
being tested is called: - through-transmission testing
The number of complete waves that pass a given point in a given period of time (usually
one second): - frequency of wave motion
the boundary between two different materials which are in contact with each other is
called: - An interface
When the motion of the particles of a medium is parallel to the direction of propagation,
the wave being transmitted is called a: - Longitudinal wave
when the motion of the particles of a medium is transverse to the direction of
propagation, the wave transmitted is called a: - Shear wave
"25 million cycles per second" can also be stated as: - 25 megahertz
When a vertical indication has reached the maximum signal height which can be
displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to
have reached its: - vertical level
Most commercial ultrasonic testing is accomplished using frequencies between: - .2 and
25 megahertz
In a basic ultrasonic test pattern (A-scan) for contact testing, the initial pulse (assume
no sweep delay is used) is: - the high indication on the extreme left side of the screen
that represents the entry surface of the inspected part.
An ultrasonic test using a straight beam contact transducer is being conducted through
the thickness of a flat part such as a plate. This test should detect: - laminar-type flaws
with major dimensions parallel to the rolled surface
, Entry surface resolution is a characteristic of an ultrasonic testing system which defines
its ability to: - detect discontinuities oriented in a direction parallel to the ultrasonic beam
During ultrasonic testing by the immersion method, it is frequently necessary to
angulate the search unit when a discontinuity is located in order to: - obtain a maximum
response if the discontinuity is not originally oriented perpendicular to the ultrasonic
beam
All other factors being equal, which of the following modes of vibration has the greatest
velocity?
Shear wave
Transverse wave
Surface wave
Longitudinal wave - Longitudinal wave
On the area-amplitude test blocks, the flat bottomed holes in the blocks are: - Different
in diameter, increasing by 1/64-inch increments from the No. 1 block to the No. 8 block.
In immersion testing, verification that the search unit is normal to a flat entry surface is
indicated by: - Maximum reflection from the entry surface
sound waves of a frequency beyond the hearing range of human ears are referred to as
ultrasonic waves or vibrations, and the term embraces all vibrational waves of frequency
greater than approximately: - 20,000 hertz
(vibrations above human hearing range are called ultrasonic vibrations)
(UT testing units - 5million hertz (5 megahertz))
The velocity of sound waves is primarily dependent on: - The material in which the
sound is being transmitted and the mode of vibration
A disadvantage of using natural quartz crystals in a search unit is that: - It is the least
effective generator of ultrasonic energy of all commonly used materials
An advantage of using a ceramic transducer in search units: - It is one of the most
efficient generators of ultrasonic energy
When testing by the surface wave method, patches of oil or dirt on the surface may: -
cause both an attenuation of sound and indications on the screen
In immersion testing, the most commonly used couplant is: - water
The piezoelectric mater in the search unit:
A. Converts electrical energy to mechanical energy
B. Converts mechanical energy to electrical energy
C. both
AND DETAILED ANWERS FROM AVERIFIED SOURCE
GRADED A+
Vibration is (two things): - back and forth movement
energy in motion
The indication on the cathode ray tube(CRT) which represents the far boundary of the
material being tested is called: - Back surface reflection
The cable that connects the ultrasonic instrument to the search unit is specially
designed so that one conductor is centered inside another. The technical name for such
a cable is: - coaxial cable
Another name for compressional wave is: - longitudinal wave
Another name for rayleigh waves is: - surface waves
A transducer is a ______________ material in a search unit which vibrates to produce
ultrasonic waves - piezoelectric
Which of the following search units would contain the thinnest quartz crystal?
A. 1-megahertz
B. 5-megahertz
C. 15-megahertz
D. 25-megahertz - 25-megahertz
A 25-megahertz search unit would most likely be used during: - Immersion testing
The amount of beam divergence from a crystal is primarily dependent on the: -
frequency and crystal size
When an ultrasonic beam passes through the interface between two dissimilar materials
at an angle, the new angle of sound travel takes place in the second material due to: -
refraction
under most circumstances, which of the following frequencies would result in the best
resolving power?
1megahertz
5megahertz
10megahertz
,25megahertz - 25 megahertz
An advantage of using lithium sulfate in search units is that: - it is one of the most
efficient receivers of ultrasonic energy
Which of the following materials of the same alloy is most likely to produce the greatest
amount of sound attenuation over a given distance? - A coarse grained casting
In contact testing, the entry surface indication is sometimes referred to as: - The initial
pulse OR the "main bang" or transmitter pulse
A screen pattern containing a large number of low-level indications (often referred to as
"hash") could be caused by: - Coarse grained material
A test method employing two separate search units on opposite surfaces of the material
being tested is called: - through-transmission testing
The number of complete waves that pass a given point in a given period of time (usually
one second): - frequency of wave motion
the boundary between two different materials which are in contact with each other is
called: - An interface
When the motion of the particles of a medium is parallel to the direction of propagation,
the wave being transmitted is called a: - Longitudinal wave
when the motion of the particles of a medium is transverse to the direction of
propagation, the wave transmitted is called a: - Shear wave
"25 million cycles per second" can also be stated as: - 25 megahertz
When a vertical indication has reached the maximum signal height which can be
displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to
have reached its: - vertical level
Most commercial ultrasonic testing is accomplished using frequencies between: - .2 and
25 megahertz
In a basic ultrasonic test pattern (A-scan) for contact testing, the initial pulse (assume
no sweep delay is used) is: - the high indication on the extreme left side of the screen
that represents the entry surface of the inspected part.
An ultrasonic test using a straight beam contact transducer is being conducted through
the thickness of a flat part such as a plate. This test should detect: - laminar-type flaws
with major dimensions parallel to the rolled surface
, Entry surface resolution is a characteristic of an ultrasonic testing system which defines
its ability to: - detect discontinuities oriented in a direction parallel to the ultrasonic beam
During ultrasonic testing by the immersion method, it is frequently necessary to
angulate the search unit when a discontinuity is located in order to: - obtain a maximum
response if the discontinuity is not originally oriented perpendicular to the ultrasonic
beam
All other factors being equal, which of the following modes of vibration has the greatest
velocity?
Shear wave
Transverse wave
Surface wave
Longitudinal wave - Longitudinal wave
On the area-amplitude test blocks, the flat bottomed holes in the blocks are: - Different
in diameter, increasing by 1/64-inch increments from the No. 1 block to the No. 8 block.
In immersion testing, verification that the search unit is normal to a flat entry surface is
indicated by: - Maximum reflection from the entry surface
sound waves of a frequency beyond the hearing range of human ears are referred to as
ultrasonic waves or vibrations, and the term embraces all vibrational waves of frequency
greater than approximately: - 20,000 hertz
(vibrations above human hearing range are called ultrasonic vibrations)
(UT testing units - 5million hertz (5 megahertz))
The velocity of sound waves is primarily dependent on: - The material in which the
sound is being transmitted and the mode of vibration
A disadvantage of using natural quartz crystals in a search unit is that: - It is the least
effective generator of ultrasonic energy of all commonly used materials
An advantage of using a ceramic transducer in search units: - It is one of the most
efficient generators of ultrasonic energy
When testing by the surface wave method, patches of oil or dirt on the surface may: -
cause both an attenuation of sound and indications on the screen
In immersion testing, the most commonly used couplant is: - water
The piezoelectric mater in the search unit:
A. Converts electrical energy to mechanical energy
B. Converts mechanical energy to electrical energy
C. both
