Exam (elaborations)
NDT UT LEVEL 2 EXAM QUESTIONS WITH VERIFIED ANSWERS
- Course
- Institution
NDT UT LEVEL 2 EXAM QUESTIONS WITH VERIFIED ANSWERS ...
[Show more]
Content preview
NDT UT LEVEL 2 EXAM QUESTIONS WITH VERIFIEDANSWERS 2024-2025
Discontinuity location and size (plan view). - ANSWER When a C-scan is
used to produce a permanent record of an ultrasonic test, the
information displayed is typically the:
Loss of echo amplitude from discontinuities and an increase in the width
of the front surface echo. - ANSWER Rough entry surface echo
conditions can result in:
The attenuation - ANSWER As the grain size increases in a material, its
principal effect in ultrasonic testing is on:
Decrease it - ANSWER In straight beam pulse echo testing a
discontinuity with a rough reflecting surface perpendicular to the incident
wave will have what effect on the detected signal in comparison to a
smooth flat-bottom hole of the same size? (Increase, decrease, no
effect, decrease the width of the pulse of it.)
Machine Oil - ANSWER Ultrasonic vibrations can be propagated only in
the longitudinal mode in which of the following media? (Machine oil,
Aluminum, Ice, Beryllium)
The same as the velocity at 1/2 inch - ANSWER If the velocity of a
longitudinal mode wave in a given homogeneous material is .625
cm/micro second at 1/2 inch below the surface, what is the velocity at 2
inches below the surface? (1/4 the velocity at 1/2 inch, 1/2 the velocity at
1/2 inch, the same, none of the above)
The wavelength would be shorter - ANSWER If a 5.0 MHz transducer is
substituted for a 2.25 MHz transducer (5.0 old, 2.25 new), what would be
the effect on the wavelength of a longitudinal mode wave in the test
specimen.
, All of the above - ANSWER What can cause irrelevant indications on the
display screen? (Contoured surfaces, edge effects, surface conditions,
All of the above)
Reference Standard - ANSWER A common method for the estimation of
defect size is the use of a:
Near Field - ANSWER Another name for Fresnel Zone is:
Test material parameter - ANSWER Attenuation is a: (Test display
characteristic, Test material parameter, Transducer characteristic, Form
of testing)
Decreased - ANSWER For discontinuity geometries other than flat, the
echo amplitude is usually ______ from that observed for a flat defect, of
similar orientation perpendicular to the sound beams. (identical,
increased, decreased, elongated)
Angulate the search unit - ANSWER What must be done to evaluate
discontinuities that are oriented at an angle to the entry surface so that
the sound beam will strike the plane of the discontinuity at right angles?
Activate the transducer - ANSWER The pulser circuit in an ultrasonic
instrument is used to:
RF Display - ANSWER An A-scan CRT display which shows a signal
both above and below the sweep line is called a: (Video, RF, Audio or
Frequency modulated display)
B-scan display - ANSWER Which display shows the distance a
discontinuity is from the transducer and its length in the direction of
transducer travel?
Material Properties - ANSWER The velocity of sound in a material is
dependent upon the:
Sound wave frequency - ANSWER To vary or change the wavelength of
sound being used to test a part, you would change the:
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now