Generally, the best ultrasonic testing method for detecting
discontinuities oriented along the fusion zone in a welded plate
is:

An ultrasonic testing instrument that displays pulses
representing the magnitude of reflected ultrasound as a function
of time or depth of metal is said to contain:

At a water-to-steel interface the angle of incidence in water
is 7 degrees. The principal mode of vibration that exists in the
steel is:

In a liquid medium, the only mode of vibration that exists is:In a liquid medium, the only mode of vibration that exists is:

In an ultrasonic instrument, the number of pulses produced by
an instrument in a given period of time is known as the:

In a basic pulse-echo ultrasonic instrument, the component
that coordinates the action and timing of other components is
called a:

In a basic pulse-echo ultrasonic instrument, the component that
produces the voltage that activates the search unit is called:

In a basic-pulse-echo ultrasonic instrument, the component that produces the time base line is called a:

In a basic pulse-echo ultrasonic instrument, the component
that produces visible signals on the CRT which are used to measure
distance is called a:

Most basic pulse-echo ultrasonic instruments use:

The cathode ray tube screen will display a plan view of the part
outline and defects when using:

The incident angles at which 90 degrees refraction of
longitudinal and shear waves occurs are called:

Compression waves whose particle displacement is parallel to
the direction of propagation are called:

Which of the following modes of vibration are quickly damped
out when testing by the immersion method?

The motion of particles in a shear wave is:

In contact testing, shear waves can be induced in the test material by:

As frequency increases in ultrasonic testing, the angle of
beam divergence of a given diameter crystal:

Which of the following is not an advantage of contact
ultrasonic search units(probes) adapted with lucite shoes?

In which medium listed below would the velocity of sound be
lowest?

A longitudinal ultrasonic wave is transmitted from water into
steel at an angle of 5 degrees from the normal. In such a case the
refracted angle of the transverse wave is:

The velocity of longitudinal waves will be highest in:

In steel, the velocity of sound is greatest in which of the
following modes of vibration?

The acoustic impedance is:

Thin sheet may be inspected with the ultrasonic wave directed
normal to the surface by observing:

A diagram in which the entire circuit stage or sections are
shown by geometric figures and the path of the signal or energy by
lines and/or arrows is called a:

A hole produced during the solidification of metal due to
escaping gases is called:

A discontinuity that occurs during the casting of molten metal
which may be caused by the splashing, surging, interrupted pouring,
or the meeting of two streams of metal coming from different
directions is called:

The ratio between the wave speed in one material and the wave
speed in a second material is called:

The expansion and contraction of a magnetic material under the
influence of a changing magnetic field is referred to as:

The ratio of stress to strain in a material within the elastic
limit is called:

A point, line, or surface of a vibrating body marked by absolute
or relative freedom from vibratory motion is referred to as:

A quartz crystal cut so that its major faces are parallel to
the Z and Y axes and perpendicular to the X axis is called:

The equation describing wavelength in terms of velocity and
frequency is:

Which of the following can occur when an ultrasonic beam
reaches the interface of two dissimilar materials?

Of the piezoelectric materials listed below, the most
efficient sound transmitter is:

Of thepiezoelectric materials listed below, the most
efficient sound receiver is:

The most commonly used method of producing shear waves in a
test part when inspecting by the immersion method is:

Beam divergence is a function of the dimensions of the crystal
and the wavelength of the beam transmitted through a medium, and it:

The wavelength of an ultrasonic wave is:

The fundamental frequency of a piezoelectric crystal is
primarily a function of:

Acoustic velocities are primarily described by:

Inspection of castings is often impractical because of:

Lamb waves may be used to inspect:

The resolving power of a search unit is directly proportional
to its:

In the basic pulse-echo instrument, the synchronizer, clock or
timer circuit will determine the instrument's:

The primary requirement of a paintbrush transducer is that:

Heat conduction, viscous friction, elastic hysteresis, and
scattering are four different mechanisms which lead to:

Since the velocity of sound in aluminum is approximately 245,000
in/sec, how long does it take for sound to travel through 1 inch of
aluminum?

When testing a part with a rough surface, it is generally
advisable to use:

Reflection indications from a weld area being inspected by the
angle-beam technique may represent:

In an A-scan presentation, the horizontal line formed by the
uniform and repeated movement of an electron beam across the
fluorescent screen of a cathode ray tube is called:

Which of the following frequencies would probably result in
the greatest amount of attenuation losses?

In general, which waves will travel around gradual curves with
little or no reflection from the curve?

To evaluate and accurately locate discontinuities after
scanning a part with a paintbrush transducer, it is generally
necessary to use a:

As the impedance ratio of two dissimilar materials increases,
the percentage of sound coupled through an interface of such materials:

Low frequency sound waves are not generally used to test thin
materials because of:

When using two separate search units (one a transmitter, the
other a receiver), the most efficient combination would be:

In immersion testing, the accessory equipment to which the
search cable and the search unit are attached is called a:

In general, discontinuities in wrought products tend to be
oriented:

In immersion testing irrelevant or false indications caused by
contoured surfaces are likely to result in a:

In contact testing, defects near the entry surface cannot
always be detected because of:

In cases where the diameter of tubing being inspected is
smaller than the diameter of the transducer, what can be used
to confine the sound beam to the proper range of angles?

The maximum scanning speed possible is primarily determined
by:

Surface waves are reduced to an energy level of approximately
1/25 of the original power at a depth of:

To prevent the appearance of the second front surface
indication before the first back reflection when inspecting
aluminum by the immersion method (water is used as a couplant),
it is necessary to have a minimum of at least one inch of
water for every:

Increasing the length of the pulse used to activate the search
unit will:

Of the following sound wave modes, which one has multiple or
varying wave velocities?

Which of the following would be considered application(s) of
ultrasonic techniques?

The only significant sound wave mode that will travel through
a liquid is:

The acoustic impedance of a material is used to:

Acoustic energy propagates in different modes. Which of the
following represents a mode?

When angle beam contact testing a test piece, increasing the
incident angle until the second critical angle is reached results in:

The simple experiment where a stick in a glass of water appears
disjointed at the water surface illustrates the phenomenon of:

The crystal thickness and transducer frequency are related. The
thinner the crystal:

The random distribution of crystallographic direction in alloys
with large crystalline structure is a factor in determining:

The length of the zone adjacent to a transducer in which
fluctuations in sound pressure occur is mostly affected by:

The differences in signals received from identical reflectors
at different material distances from a transducer may be caused by:

It is possible for a discontinuity smaller than the transducer to
produce indications of fluctuating amplitude as the search unit is
moved laterally if testing is being performed in the:

In immersion testing, the near field effects of a transducer
may be eliminated by:

Which of the following may result in a long narrow rod if the
beam divergence results in a reflection from a side of the test
piece before the sound wave reaches the back surface?

Where does beam divergence occur?

As frequency increases in ultrasonic testing, the angle of
beam divergence of a given diameter crystal:

As the radius of curvature of a curved lens is increased, the
focal length of the lens will:

When examining materials for planar flaws oriented parallel to
the part surface, what testing method is most often used?

Rayleigh waves are influenced most by defects located:

The ultrasonic test method in which finger damping is most
effective in locating a discontinuity is:

Lamb waves can be used to detect:

The ratio of the velocity of sound in water compared to that
for aluminum or steel is approximately:

Which of the following scanning methods could be classified as
an immersion type test?

In an immersion test of a piece of steel or aluminum, the
water distance appears on the display as a fairly wide space
between the initial pulse and the front surface reflection
because of:

What law can be used to calculate the angle of refraction
within a metal for both longitudinal and shear waves?

At an interface between two different materials, an impedance
difference results in:

When using focused transducers, non-symmetry in a propagated
sound beam may be caused by:

Ultrasonic wheel units may be used for which of the following
types of examination?

During straight beam testing, test specimens with non-parallel
front and back surfaces can cause:

In the immersion technique, the distance between the face of
the transducer and the test surface (water path) is usually adjusted
so that the time required to send the sound beam through the water.

In a B-scan display, the length of a screen indication from a
discontinuity is related to:

Which circuit triggers the pulser and sweep circuits in an
A-scan display?

On an A-scan display, the "dead zone," refers to:

On an A-scan display, what represents the intensity of a
reflected beam?

Of the following scan types, which one can be used to produce
a recording of flaw areas superimposed over a plan view of the test
piece?

In immersion testing in a small tank, a manually operated
manipulator is used to:

A 45 degrees shear angle beam transducer produces a wave in
the metal which is polarized:

In straight (normal) beam contact testing, a reduction in the
back surface reflection amplitude could indicate:

In an automatic scanning immersion unit, the bridge or
carriage serves to:

When adjusting the flaw locating rule for a shear wave weld
inspection, the zero point on the rule must coincide with the:

A special scanning device with the transducer mounted in a
tire- like container filled with couplant is commonly called;

Which best describes a typical display of a crack whose major
surface is perpendicular to the ultrasonic beam?

Compensation for the variation in echo height related to variations
in discontinuity depth in the test material is known as:

Which of the following is a reference reflector that is not
dependent on beam angle

During a straight beam ultrasonic test a discontinuity
indication is detected which is small in amplitude compared
to the loss in amplitude of back reflection. The orientation
of this discontinuity is probably:

A discontinuity is located having an orientation such that its
long axis is parallel to the sound beam. The indication from such a
discontinuity will be:

Gas discontinuities are reduced to flat discs or other shapes
parallel to the surface by:

In which zone does the amplitude of an indication from a given
discontinuity diminish exponentially as the distance increases?

A smooth flat discontinuity whose major plane is not
perpendicular to the direction of sound propagation may be indicated by:

Using a pulse-echo technique, if the major plane of a flat
discontinuity is oriented at some angle other than perpendicular
to the direction of sound propagation, the result may be:

As transducer diameter decreases, the beam spread:

A set of standard reference blocks with the same geometrical
configuration and dimensions other than the size of the calibration
reflectors, e.g., flat bottom holes, is called a set of:

The angle at which 90 degree refraction of a longitudinal
sound wave is reached is called:

Which of the following controls the voltage supplied to the
vertical deflection plates of the CRT in an A-scan UT setup?

Attenuation is a difficult quantity to measure accurately,
particularly in solid materials, at the test frequencies normally
used. The overall result usually observed includes other loss
mechanisms which can include:

The vertical linear range of a test instrument may be
determined by obtaining ultrasonic responses from:

Large grains in a metallic test specimen usually result in:

The total energy losses occurring in all materials is called:

Delay-tip(stand-off)type contact search units are primarily
used for:

Acoustical lenses are commonly used for contour correction.
When scanning the inside of a pipe section by the immersion method,
which of the following lens types would be used?

When the incident angle is chosen to be between the first and
second critical angles, the ultrasonic wave generated within the
part will be:

The attenuation of energy within a material in the far field
of the ultrasonic beam may be expressed as the:

For aluminum and steel the longitudinal velocity is approximately
_________ the shear velocity:

Water travel distance for immersion inspections should be:

The electronic circuitry that allows selection and processing
of only those signals relating to discontinuities that occur in
specific zones of a part is called:

When conducting a contact ultrasonic test, the "hash" or
irregular signals that appear in the CRT display of the area
being inspected could be caused by:

In inspecting a 4-inch diameter threaded steel cylinder for
radial cracks extending from the root of the threads, it would be
preferable to transmit:

In an immersion inspection of raw material, the water travel
distance should be:

The angle formed by an ultrasonic wave as it enters a medium
of different velocity than the one from which it came and a line
drawn perpendicular to the interface between the two media is called:

The process of adjusting an instrument or device to a reference
standard is referred to as:

An electron tube in which a beam of electrons from the cathode
is used to reproduce an image on a fluorescent screen at the end of
the tube is referred to as:

A grouping of a number of crystals in one search unit, with
all contact surfaces in the sample plane, and vibrating in phase
with each other to act as a single transducer is called a:

The scattering of the ultrasonic energy of an ultrasonic beam
due to reflection from a highly polished surface is called:

The angle of reflection is:

The angular position of the reflecting surface of a planar
discontinuity with respect to the entry surface is referred to as:

A short burst of alternating electrical energy is called:

In ultrasonic testing, the time duration of the transmitted
pulse is referred to as:

The phenomenon by which a wave strikes a boundary and changes
the direction of its propagation within the same medium is referred
to as:

The change in direction of an ultrasonic beam when it passes
from one medium to another whose velocity differs from that of
the first medium is called:

The coated inside surface of the large end of a cathode ray
tube which becomes luminous when struck by an electron beam is called: