Top 150+ Solved Ultrasonic Testing Level 1 MCQ Questions Answer
Q. Wavelength is:
a. The distance from the crest to the next trough of a sound wave
b. The time required for a sound wave to propagate from a trough to the next trough of a sound wave
c. The distance a sound wave travels in one second
d. The distance from trough to trough or from peak to peak of a sound wave
Q. The velocity of surface waves is approximatelyshear waves in the same material.
a. Two times
b. Four times
c. One half
d. Nine-tenths
Q. An ultrasonic instrument control which allows moving an A scan display to the left orright without changing the distance between any echoes displayed is called:
a. The sweep length or range control
b. The damping control
c. The sweep delay
d. The pulse length control
Q. A disadvantage of using natural quartz crystals in a search unit is that:
a. It will dissolve in water
b. It is the least effective generator of ultrasonic energy of all commonly used materials
c. It easily loses it operating characteristics as it ages
d. None of the above is correct
Q. The formula Sin A/Sin B = VA/VB is known as:
a. The Fresnell relationship
b. Snell's law
c. The law of sines
d. The critical velocity ratio
Q. A 25 MHz search unit would most likely be used during:
a. Straight beam contact testing
b. Immersion testing
c. Angle beam contact testing
d. Surface wave contact testing
Q. A technique in which two transducers are used, one on each side of the test piece, iscalled:
a. Angle beam testing
b. Modified immersion testing
c. Through transmission testing
d. Twinning
Q. Sound beam intensity is irregular in the area called:
a. The near field
b. The far field
c. The beam spread
d. The delay line
Q. A more highly damped transducer crystal results in:
a. Better resolution
b. Better sensitivity
c. Lower sensitivity
d. Poorer resolution
Q. The process of comparing an instrument or device with a standard is called:
a. Angulation
b. Calibration
c. Attenuation
d. Correlation
Q. Scattering of an ultrasonic beam is most pronounced when:
a. Material grain size and wavelength are comparable
b. Low frequency transducers are used
c. Large wavelengths are used for ultrasonic testing
d. None of the above
Q. Ultrasonic testing is:
a. Mechanical energy with a speed of propagation faster than the speed of sound
b. Sound which has a frequency or pitch above the range of the human ear
c. The science of discontinuity detection using ultrasonic sound
d. Mechanical vibrations below the frequency of human hearing
Q. Which technique would most likely be used to examine a weld, with the weld cap stillin place?
a. Through transmission testing
b. Angle beam testing
c. Straight beam testing
d. None of the above
Q. Higher frequency transducers are normally used:
a. In contact testing applications
b. In angle beam testing applications
c. In immersion testing applications
d. Where deeper penetration is required