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Ndi Ut Level 2 Asnt Test Questions & Detailed Answers 2024
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Ndi Ut Level 2 Asnt Test Questions & Detailed Answers 2024
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Ndi Ut Level 2 Asnt Test Questions & DetailedAnswers 2024
Fresnel zone - ANS the interference field near the face of a transducer is
often referred to as the _____
Angle of Reflection - ANS in a test where the transducer is not perpendicular
to the inspection surface, the angle of incidence is equal to _________
A Marker - ANS a separate time base line imposed on the viewing screen of
some ultrasonic testing instruments that permits measurement of distances
is often referred to as ________
Refraction - ANS the phenomenon whereby an ultrasonic wave changes
direction when the wave crosses a boundary between materials with
different velocities is called _________
Surface Waves - ANS another name for Rayleigh Waves is _____
Coaxial Cable - ANS the cable that connects the ultrasonic instrument to the
search unit especially designed so that one conductor is centered inside
another. the technical name for such cable is _______
Longitudinal Wave - ANS another name for compressional name is_______
Crystal - ANS the piezoelectric material in a search unit which vibrates to
produce ultrasonic waves is called a _______
Frequency and Crystal Size - ANS the amount of beam divergence from a
crystal is primarily dependent on the __________
,
Refraction - ANS 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 ________
25 MHz - ANS 25 million cycles per second can also be stated as ______
A Coarse-Grained Casting - ANS which of the following materials of the same
alloy is most likely to produce the greatest amount of sound attenuation over
a given distance?
Longitudinal Wave - ANS when the motion of the particles of a medium is
parallel to the direction of propagation, the wave being transmitted is called
a _________
Shear Wave - ANS when the motion of the particles of a medium is
transverse to the direction of propagation, the wave being transmitted is
called a ____________
Velocity - ANS a term used in ultrasonics to express the rate at which sound
waves pass through various substances is _________
Vertical Level - ANS 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 _______
Elapsed Time or Distance - ANS in an A-scan presentation the horizontal base
line represents _____
Laminar-Type Flaws with Major Dimensions Parallel to the Rolled Surface -
ANS an ultrasonic test using straight beam contact search unit is being
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