Top 150+ Solved Ultrasonic Testing Level 1 MCQ Questions Answer
Q. Which of the following materials of the same alloy is most likely to produce thegreatest amount of sound attenuation over a given distance?
a. A hand forging
b. A coarse grained casting
c. An extrusion
d. The attenuation is equal in all materials
Q. The ability to separate echos from reflectors close together in depth is called:
a. Resolution
b. Attenuation
c. Accuracy
d. Sensitivity
Q. Greater depth of penetration in coarse grained material may be achieved using:
a. More sweep delay
b. Higher frequencies
c. Less sweep delay
d. Lower frequencies
Q. Lower frequency transducers produce:
a. Deeper penetration, greater attentuation and less beam spread
b. Deeper penetration, less attentuation and greater beam spread
c. Greater beam spread but higher sensitivity and resolution
d. Less beam spread but lower sensitivity and resolution
Q. Spurious indications might be caused by which of the following?
a. Mode conversion from beam spread in a long specimen
b. Surface waves generated during straight beam testing
c. A test piece with a smooth machined surface
d. All of the above
Q. The portion of a test piece which is represented by the CRT screen area from zero tothe rightmost edge of the initial pulse is called:
a. The dead zone
b. The near field
c. The near zone
d. The far zone
Q. The depth of penetration of surface waves is approximately:
a. One wavelength
b. Three wavelengths
c. 1/2 wavelength
d. The total part thickness
Q. An ultrasonic test using a straight beam contact search unit is being conductedthrough the thickness of a flat part such as a plate. This test should detect:
a. Laminar-type flaws with major dimensions parallel to the rolled surface
b. Transverse-type flaws with major dimensions at right angles to the rolled surface
c. Radial flaws with major dimensions along length but radially oriented to the rolled surface
d. None of the above
Q. The first critical angle is defined as the longitudinal wave incident angle which resultsin:
a. A refracted longitudinal wave of ninety degrees
b. A refracted shear wave of ninety degrees
c. Complete reflection of the shear wave
d. None of the above
Q. The number of complete waves which pass a given point in a given period of time(usually one second) is referred to as the:
a. Amplitude of a wave motion
b. Pulse length of a wave motion
c. Frequency of a wave motion
d. Wavelength of a wave motion
Q. The speed of sound in a given material depends on:
a. The specific acoustic impedance of the material
b. The acoustic impedance and density of the material
c. The density and elasticity of the material
d. The piezo-electric resistance of the material
Q. AA screen pattern containing a large number of low-level indications (often reffered toas ‘hash’) could be caused by:
a. A crack
b. A large inclusion
c. Coarse grained material
d. Fine grained material
Q. In an A scan presentation, the horizontal base line represents the:
a. Amount of refracted ultrasonic sound energy
b. Distance traveled by the search unit
c. Elapsed time or distance
d. None of the above
Q. An ultrasonic instrument control which is used to expand or contract the horizontalbase line of an A scan display is called:
a. The sweep length or range control
b. The damping control
c. The sweep delay
d. The pulse length control
Q. In a basic ultrasonic test pattern (A scan) for contact testing, the initial pulse (assumeno sweep delay is used):
a. Is the high indication on the extreme left side of the screen that represents the entry surface of the inspected part
b. Is the first pulse that occurs near the right side of the screen and represents the opposite boundary of the inspected part
c. Is an indication that appears and disappears during screening
d. Is always the second pulse from the left on the viewing screen