Top 150+ Solved Ultrasonic Testing Level 2 MCQ Questions Answer
Q. Most commercial ultrasonic testing is performed at frequencies between:
a. 1 MHz and 10 MHz
b. 1 MHz and 100 MHz
c. 10 MHz and 50 MHz
d. 1 MHz and 25 MHz
Q. For a transducer with any given Q, resolution increases with:
a. Sensitivity
b. Frequency
c. Wavelength
d. Crystal thickness
Q. Resolving power of a transducer is directly proportional to its:
a. Wavelength
b. Crystal thickness
c. Bandwidth
d. Q
Q. The term is used to refer to the product of wave velocity and density is:
a. Acoustic impedance
b. The velocity-density ratio
c. Index of refraction
d. Reflection co-efficient
Q. Snell's law is given by which of the following:
a. (Sin A)/(Sin B) = VB/VA
b. (Sin A)/(Sin B) = VA/VB
c. (Sin A)/ VB = V(Sin B)/VA
d. (Sin A)[VA] = (Sin B)[ VB]
Q. Snell's law is used to calculate:
a. Angle of beam divergence
b. Angle of diffraction
c. Angle of refraction
d. None of the above
Q. Calculate the refracted shear wave angle in steel [VS = 0.323cm/microsec] for anincident longitudinal wave of 39 degrees in Plexiglas [VL = 0.267cm/microsec]
a. 26 degrees
b. 45 degrees
c. 48 degrees
d. 64 degrees
Q. Calculate the refracted shear wave angle in steel [VS = 0.323cm/microsec] for anincident longitudinal wave of 45.7 degrees in Plexiglas [VL = 0.267cm/microsec]
a. 64 degrees
b. 45.7 degrees
c. 60 degrees
d. 70 degrees
Q. Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for anincident longitudinal wave of 43.5 degrees in Plexiglas [VL =0.267cm/microsec]
a. 53 degrees
b. 61 degrees
c. 42 degrees
d. 68 degrees
Q. Calculate the refracted shear wave angle in aluminium [VS = 0.31cm/microsec] for anincident longitudinal wave of 53 degrees in Plexiglas [VL = 0.267cm/microsec]
a. 53 degrees
b. 61 degrees
c. 42 degrees
d. 68 degrees
Q. Lithium sulphate, barium titanate and lead metaniobate are examples of:
a. Magnetostrictive elements
b. Piezoelectric elements
c. Rochelle salts
d. Y cut crystals
Q. The particle motion for compression waves is:
a. Parallel to wave propagation
b. Transverse to wave propagation
c. Elliptical
d. Circular
Q. Shear waves for ultrasonic testing are usually produced:
a. X cut crystals
b. Y cut crystals
c. Modulated R-F conversion
d. Mode converted longitudinal waves
Q. Near surface resolution can be improved by:
a. Using a narrow band transducer
b. Using a focused transducer
c. Using a high Q transducer
d. None of the above
Q. The most important requirement for paintbrush transducer is:
a. Uniform beam intensity across the transducer
b. A pinpoint focal spot
c. Good horizontal linearity characteristics
d. Prescribed vertical and horizontal linearity characteristics