Top 150+ Solved Ultrasonic Testing Level 1 MCQ Questions Answer
Q. A cross section view of a test piece is produced by which of the following?
a. A scan
b. B scan
c. C scan
d. A time line display
Q. Echo amplitude losses may be caused by:
a. Entry surface roughness
b. Coarse grain size
c. Discontinuity orientation
d. All of the above
Q. Which of the following is an advantage of using a focused transducer?
a. The useful range of the transducer is decreased
b. The useful range of the transducer is increased
c. Sensitivity to the effects of a rough surface is increased
d. Greater sensitivity is achieved in the transducer's useable range
Q. Which of the following circuits provide current to operate the ultrasonic instrument?
a. The pulse generator
b. The amplifier
c. The power supply
d. The sweep generator
Q. Which of the following is a true statement?
a. Higher frequencies produce lower sensitivity
b. Higher frequencies produce longer wavelengths
c. Thicker crystals produce lower frequency transducers
d. Longer wavelengths produce higher sensitivity
Q. Which type(s) of sound wave modes will propagate through solids?
a. Longitudinal
b. Shear
c. Surface
d. All of the above
Q. The longitudinal wave incident angle at which the refracted shear wave angle equalsninety degrees is called:
a. The Snell angle
b. The Snell constant
c. The first critical angle
d. The second critical angle
Q. The amount of beam divergence from a crystal is primarily dependent onthe:
a. Type of test
b. Tightness of crystal backing in the search unit
c. Frequency and crystal size
d. Pulse length
Q. In ultrasonic testing, a liquid coupling medium between the crystal surface and the part surface is necessary because :
a. Lubricant is required to minimize wear on the crystal surface
b. An air interface between the crystal surface and the part surface would almost completely reflect the ultrasonic vibrations
c. The crystal will not vibrate if placed directly in contact with the surface of the part being inspected
d. The liquid is necessary to complete the electrical circuit in the search unit
Q. Lower 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
Q. All other factors being equal, which of the following modes of vibration has the greatestvelocity?
a. Shear wave
b. Transverse wave
c. Surface wave
d. Longitudinal wave
Q. In immersion testing, the position of the search unit is often varied to transmit soundinto the test part at various angles to the front surface. Such a procedure is referred to as:
a. Angulation
b. Dispersion
c. Reflection testing
d. Refraction
Q. The angle of a refracted shear wave generated as a sound wave passes at an anglethrough an acoustic interface is dependant on:
a. The acoustic impedances of the materials of each side of the interface
b. The frequency of the incident sound wave
c. The wavelength of the incident sound wave
d. The hardness of the materials on each side of the interface
Q. Which of the following is a likely effect of a rough test piece surface?
a. An improved ultrasonic signal to noise ratio
b. A more penetrating sound beam
c. Loss of discontinuity signal amplitude
d. Higher test reliability