NDT UT Level 2 Test with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
Another name for a compressional wave is: ✔Correct Answer-Longitudinal Wave
The number of waves that pass a given point in a given period of time (1 second) is referred to
as the: ✔Correct Answer-Frequency of the wave motion.
Sound waves with a frequency beyond human hearing are referred to as ultrasonic waves or
vibrations, and have a frequency greater than: ✔Correct Answer-20,000 Hz (20khz)
When referring to ultrasonic testing, the term used to define the rate at which sound waves will
pass through various substances is referred to as: ✔Correct Answer-Velocity
The velocity of a compression wave as compared to a transverse wave is approximately ______
as fast. ✔Correct Answer-Twice
Which of the following materials can longitudinal waves pass through that other waves can not?
✔Correct Answer-Machine Oil
Material particles in the path of the ultrasonic wave do not travel with the wave but only react
to the energy of the wave. (T/F) ✔Correct Answer-True
Wavelength is the distance from trough to trough of a given wave. That distance is not always
the same as the distance from peak to peak of that wave. (T/F) ✔Correct Answer-False
The higher the frequency of the wave, the shorter the wave length. (T/F) ✔Correct Answer-
True
A level 1 technician is enabled by recommended practice No. SNT-TC-1A to decide the use of
one test method over another. (T/F) ✔Correct Answer-False
Most ultrasonic thickness gaging and discontinuity detection as a through transmission
technique. (T/F) ✔Correct Answer-False
Any employer that uses the Recommended Practice No. SNT-TC-1A should use it as a guide to
establish a written practice that meets its needs and those of the customers. (T/F) ✔Correct
Answer-True
Recommended Practice No. SNT-TC-1A is to be followed precisely in the writing of a company
written practice. (T/F) ✔Correct Answer-False
, A material between the face of a search unit and the test surface to permit or improve the
transmission of ultrasonic vibrations is called: ✔Correct Answer-A couplant.
By changing the transducer, the ultrasonic testing technician could change the testing _______.
✔Correct Answer-Frequency.
Another name for a longitudinal wave is: ✔Correct Answer-Compression Wave
The frequency of a wave describes: ✔Correct Answer-The number of waves that pass through
a given point.
What term is used to define the rate at which sound waves will pass through various
substances? ✔Correct Answer-Velocity.
The only modes of vibration that exist in liquid are: ✔Correct Answer-Longitudinal.
The factors that have the greatest affect on ultrasonic velocity are: ✔Correct Answer-Material
density, elasticity, and wave mode.
A surface wave velocity is about 10% less than _______ in the same material. ✔Correct
Answer-Shear waves.
In ultrasonic testing, the word attenuation is most closely related with: ✔Correct Answer-
Reflection/Scatter
Adding ____ dB to your gain setting will double your screen indication. ✔Correct Answer-6
A technician might use a lesser ______ as a means to combat the difficulty of getting sound
through a course grain structure of a thick casting. ✔Correct Answer-Frequency.
When wave energy is lost through reflection and scattering of the beam within the material, it is
understood that ______ is occurring. ✔Correct Answer-Attenuation.
The higher the ratio of acoustic impendence, the greater the reflectivity of an interface between
two materials. (T/F) ✔Correct Answer-True
A high impendence ratio is often called an impendence mismatch. (T/F) ✔Correct Answer-
True
Ultrasonic testing does not give direct information about the exact nature of a discontinuity.
(T/F) ✔Correct Answer-True
In ultrasonics, the term refraction refers to _____ of the sound beam as it passes from one
medium to another. ✔Correct Answer-Bending
Answers |Actual Complete Update |Already Graded A+
Another name for a compressional wave is: ✔Correct Answer-Longitudinal Wave
The number of waves that pass a given point in a given period of time (1 second) is referred to
as the: ✔Correct Answer-Frequency of the wave motion.
Sound waves with a frequency beyond human hearing are referred to as ultrasonic waves or
vibrations, and have a frequency greater than: ✔Correct Answer-20,000 Hz (20khz)
When referring to ultrasonic testing, the term used to define the rate at which sound waves will
pass through various substances is referred to as: ✔Correct Answer-Velocity
The velocity of a compression wave as compared to a transverse wave is approximately ______
as fast. ✔Correct Answer-Twice
Which of the following materials can longitudinal waves pass through that other waves can not?
✔Correct Answer-Machine Oil
Material particles in the path of the ultrasonic wave do not travel with the wave but only react
to the energy of the wave. (T/F) ✔Correct Answer-True
Wavelength is the distance from trough to trough of a given wave. That distance is not always
the same as the distance from peak to peak of that wave. (T/F) ✔Correct Answer-False
The higher the frequency of the wave, the shorter the wave length. (T/F) ✔Correct Answer-
True
A level 1 technician is enabled by recommended practice No. SNT-TC-1A to decide the use of
one test method over another. (T/F) ✔Correct Answer-False
Most ultrasonic thickness gaging and discontinuity detection as a through transmission
technique. (T/F) ✔Correct Answer-False
Any employer that uses the Recommended Practice No. SNT-TC-1A should use it as a guide to
establish a written practice that meets its needs and those of the customers. (T/F) ✔Correct
Answer-True
Recommended Practice No. SNT-TC-1A is to be followed precisely in the writing of a company
written practice. (T/F) ✔Correct Answer-False
, A material between the face of a search unit and the test surface to permit or improve the
transmission of ultrasonic vibrations is called: ✔Correct Answer-A couplant.
By changing the transducer, the ultrasonic testing technician could change the testing _______.
✔Correct Answer-Frequency.
Another name for a longitudinal wave is: ✔Correct Answer-Compression Wave
The frequency of a wave describes: ✔Correct Answer-The number of waves that pass through
a given point.
What term is used to define the rate at which sound waves will pass through various
substances? ✔Correct Answer-Velocity.
The only modes of vibration that exist in liquid are: ✔Correct Answer-Longitudinal.
The factors that have the greatest affect on ultrasonic velocity are: ✔Correct Answer-Material
density, elasticity, and wave mode.
A surface wave velocity is about 10% less than _______ in the same material. ✔Correct
Answer-Shear waves.
In ultrasonic testing, the word attenuation is most closely related with: ✔Correct Answer-
Reflection/Scatter
Adding ____ dB to your gain setting will double your screen indication. ✔Correct Answer-6
A technician might use a lesser ______ as a means to combat the difficulty of getting sound
through a course grain structure of a thick casting. ✔Correct Answer-Frequency.
When wave energy is lost through reflection and scattering of the beam within the material, it is
understood that ______ is occurring. ✔Correct Answer-Attenuation.
The higher the ratio of acoustic impendence, the greater the reflectivity of an interface between
two materials. (T/F) ✔Correct Answer-True
A high impendence ratio is often called an impendence mismatch. (T/F) ✔Correct Answer-
True
Ultrasonic testing does not give direct information about the exact nature of a discontinuity.
(T/F) ✔Correct Answer-True
In ultrasonics, the term refraction refers to _____ of the sound beam as it passes from one
medium to another. ✔Correct Answer-Bending
