Top 150+ Solved Ultrasonic Testing Level 2 MCQ Questions Answer
Q. The most important factor required for the proper interpretation of ultrasonic testresults is:
a. The ultrasonic signal amplitude
b. A knowledge of the test specimen material and its construction
c. A knowledge of the ultrasonic instruments operating characteristics
d. The ultrasonic signal location
Q. A significant limitation of a lower frequency, single element transducer is:
a. Scatter of sound beam due to microstructure of test object
b. Increased grain noise or ‘hash’
c. Less beam spread
d. Impaired ability to display discontinuities just below the entry surface
Q. Which of the following is the least efficient generator of ultrasonic waves:
a. Quartz
b. Lithium sulphate
c. Lead metaniobate
d. Barium titanate
Q. Which of the following is the least efficient receiver of ultrasonic Energy?
a. Quartz
b. Lithium sulphate
c. Lead metaniobate
d. Barium titanate
Q. The length of the zone adjacent to a transducer in which fluctuations in soundpressure occur is mostly affected by:
a. The frequency of the transducer
b. The diameter of the transducer
c. The length of transducer cable
d. Both (a) and (b)
Q. An advantage of using a transducer with a large beam spread is:
a. Higher sensitivity to small discontinuities
b. Less likelihood of spurious echoes
c. Greater likelihood of spurious echoes
d. Greater likelihood of detecting randomly oriented discontinuities
Q. Resolution is inversely proportional to:
a. Wavelength
b. Crystal thickness
c. Bandwidth
d. Mechanical losses
Q. Of the piezoelectric materials listed below, the most efficient sound transmitter is:
a. Lithium sulphate
b. Quartz
c. Barium titanate
d. Silver oxide
Q. Other factors being equal, which of the following transducers would have the greatestbeam spread?
a. A larger diameter transducer
b. A smaller diameter transducer
c. A higher frequency transducer
d. None of the above has any effect
Q. The fundamental frequency of a piezoelectric crystal is primarily a function of:
a. The length of the applied voltage pulse
b. The amplifying characteristics of the pulse amplifier in the instrument
c. The thickness of the crystal
d. None of the above
Q. In which zone does the amplitude of an indication from a given discontinuitydiminish exponentially as the distance increases?
a. Far field zone
b. Near field zone
c. Dead zone
d. Fresnel zone
Q. A typical application for a through transmission technique is:
a. Flaw depth sizing
b. Flaw depth location
c. Thickness measuring
d. Bond/lack of bond testing
Q. An advantage of a dual crystal search unit is that:
a. There is no ‘dead zone’
b. There is no near surface resolution
c. There is no near field
d. All of the above are true
Q. Most contact testing is performed by which of the following techniques?
a. Through transmission
b. Pitch-catch
c. Pulse-echo
d. Continuous wave
Q. When contouring an angle beam wedge for a convex surface, an undesirable result ofa wedge which is contoured too well might be:
a. Production of unwanted surface waves
b. Greater beam divergence due to larger contact area
c. Lower beam divergence due to larger contact area
d. Overly efficient coupling of sound beam into test part