ASNT ULTRASONIC LEVEL I EXAM 2026-2027
LATEST VERSION QUESTIONS AND VERIFIED
CORRECT ANSWERS JUST RELEASED
When inspecting coarse-grained material, a sound wave is most easily scattered by the
grain structure by a frequency of 2.25 MHz. - answer>>>Scattering frequency
The thickest crystal is contained in a 25 MHz transducer. - answer>>>Transducer thickness
Indications may result from improper frequency, oil on the surface, a surface
discontinuity, or the acoustical velocity of aluminum. - answer>>>Surface wave test
indications
The largest display indication results from a 2 mm (0.08 in) diameter flat-surfaced
discontinuity whose major face is perpendicular to the direction of sound beam
propagation. - answer>>>Display indication
Transducers constructed with a plastic wedge or standoff between the transducer
element and the test piece are commonly used for angle beam contact testing. -
answer>>>Angle beam contact testing
A transducer containing three or more individual transducer elements. -
answer>>>Mosaic transducer
Sound can be focused by means of special curved adapters located in front of the
transducer element, referred to as acoustic lenses. - answer>>>Acoustic lenses
A test method in which the parts to be inspected are placed in a water bath or some other
liquid couplant. - answer>>>Immersion testing
,-
A separate time base line imposed on the viewing display of some ultrasonic testing
instruments that permits measurement of distances. - answer>>>Time/distance line
A term used to describe the ability of an ultrasonic testing system to distinguish between
the entry surface response and the response of discontinuities near the entry surface. -
answer>>>Sensitivity
The phenomenon whereby an ultrasonic wave changes direction when the wave crosses a
boundary between materials with different velocities. - answer>>>Refraction
In a test where the transducer is not perpendicular to the inspection surface, the angle of
incidence is equal to the angle of reflection. - answer>>>Angle of incidence
The product of the acoustic velocity of sound in a material and the density of the material,
determining the amount of reflection or transmission of ultrasonic energy when it reaches
an interface. - answer>>>Acoustic impedance
In transmitting energy into the part, the ultrasonic beam will diverge (spread out) through
the part. - answer>>>Diverge
Ultrasonic waves that travel along the surface of a material and whose particle motion is
elliptical. - answer>>>Rayleigh waves
The interference field near the face of a transducer is often referred to as the Fresnel
zone. - answer>>>Fresnel zone
When the incident angle is chosen to be between the first and second critical angles, the
ultrasonic wave mode within the part will be a longitudinal wave. -
answer>>>Longitudinal wave
, The formula used to calculate the angle of refraction within a material. - answer>>>Snell's
law
In a material with a given velocity, when frequency is increased, the wavelength will be
decreased. - answer>>>Wavelength
Circuits that electronically amplify return signals from the receiving transducer and often
modify the signals into a form suitable for display. - answer>>>Receiver-amplified circuits
The most common type of data display used for ultrasonic examination of weld. -
answer>>>A-scan display
The display that plots signal amplitude versus time is called an A-scan display. -
answer>>>Signal amplitude versus time
A circuit that modifies the return signal from the receiving transducer into a form suitable
for display on an oscilloscope or other output device. - answer>>>Receiver-amplifier
A circuit that generates a burst alternating voltage that is applied to the sending
transducer. - answer>>>Pulser
A circuit that coordinates electronic operation of the entire ultrasonic instrument system.
- answer>>>Clock
A plan view display or recording of a part under examination is called a C-scan
presentation. - answer>>>C-scan presentation
Ultrasonic data, which is presented in a form representative of the cross section of the
test specimen, is called a B-scan presentation. - answer>>>B-scan presentation
What type of ultrasonic examination uses wheel-type transducers that eliminate the use
of a tank? - answer>>>Contact testing
LATEST VERSION QUESTIONS AND VERIFIED
CORRECT ANSWERS JUST RELEASED
When inspecting coarse-grained material, a sound wave is most easily scattered by the
grain structure by a frequency of 2.25 MHz. - answer>>>Scattering frequency
The thickest crystal is contained in a 25 MHz transducer. - answer>>>Transducer thickness
Indications may result from improper frequency, oil on the surface, a surface
discontinuity, or the acoustical velocity of aluminum. - answer>>>Surface wave test
indications
The largest display indication results from a 2 mm (0.08 in) diameter flat-surfaced
discontinuity whose major face is perpendicular to the direction of sound beam
propagation. - answer>>>Display indication
Transducers constructed with a plastic wedge or standoff between the transducer
element and the test piece are commonly used for angle beam contact testing. -
answer>>>Angle beam contact testing
A transducer containing three or more individual transducer elements. -
answer>>>Mosaic transducer
Sound can be focused by means of special curved adapters located in front of the
transducer element, referred to as acoustic lenses. - answer>>>Acoustic lenses
A test method in which the parts to be inspected are placed in a water bath or some other
liquid couplant. - answer>>>Immersion testing
,-
A separate time base line imposed on the viewing display of some ultrasonic testing
instruments that permits measurement of distances. - answer>>>Time/distance line
A term used to describe the ability of an ultrasonic testing system to distinguish between
the entry surface response and the response of discontinuities near the entry surface. -
answer>>>Sensitivity
The phenomenon whereby an ultrasonic wave changes direction when the wave crosses a
boundary between materials with different velocities. - answer>>>Refraction
In a test where the transducer is not perpendicular to the inspection surface, the angle of
incidence is equal to the angle of reflection. - answer>>>Angle of incidence
The product of the acoustic velocity of sound in a material and the density of the material,
determining the amount of reflection or transmission of ultrasonic energy when it reaches
an interface. - answer>>>Acoustic impedance
In transmitting energy into the part, the ultrasonic beam will diverge (spread out) through
the part. - answer>>>Diverge
Ultrasonic waves that travel along the surface of a material and whose particle motion is
elliptical. - answer>>>Rayleigh waves
The interference field near the face of a transducer is often referred to as the Fresnel
zone. - answer>>>Fresnel zone
When the incident angle is chosen to be between the first and second critical angles, the
ultrasonic wave mode within the part will be a longitudinal wave. -
answer>>>Longitudinal wave
, The formula used to calculate the angle of refraction within a material. - answer>>>Snell's
law
In a material with a given velocity, when frequency is increased, the wavelength will be
decreased. - answer>>>Wavelength
Circuits that electronically amplify return signals from the receiving transducer and often
modify the signals into a form suitable for display. - answer>>>Receiver-amplified circuits
The most common type of data display used for ultrasonic examination of weld. -
answer>>>A-scan display
The display that plots signal amplitude versus time is called an A-scan display. -
answer>>>Signal amplitude versus time
A circuit that modifies the return signal from the receiving transducer into a form suitable
for display on an oscilloscope or other output device. - answer>>>Receiver-amplifier
A circuit that generates a burst alternating voltage that is applied to the sending
transducer. - answer>>>Pulser
A circuit that coordinates electronic operation of the entire ultrasonic instrument system.
- answer>>>Clock
A plan view display or recording of a part under examination is called a C-scan
presentation. - answer>>>C-scan presentation
Ultrasonic data, which is presented in a form representative of the cross section of the
test specimen, is called a B-scan presentation. - answer>>>B-scan presentation
What type of ultrasonic examination uses wheel-type transducers that eliminate the use
of a tank? - answer>>>Contact testing
