Top 150+ Solved Ultrasonic Testing Level 1 MCQ Questions Answer
Q. Which type(s) of sound wave modes will propagate through liquids?
a. Longitudinal
b. Shear
c. Surface
d. All of the above
Q. When the motion of the particles of a medium is transverse to the direction ofpropagation, the wave being transmitted is called a:
a. Longitudinal wave
b. Shear wave
c. Surface wave
d. Lamb wave
Q. Which of the following test frequencies would generally provide the best penetrationin a 12 inch thick specimen of coarse-grained steel?
a. 1.0 MHz
b. 2.25 MHz
c. 5.0 MHz
d. 10 MHz
Q. An oscilloscope display in which the screen base line is adjusted to represent the oneway distance in a test piece is called a:
a. A scan display
b. B scan display
c. C scan display
d. D scan display
Q. A common use of ultrasonic testing is:
a. Cleaning
b. Detecting of sub-surface indications
c. Determination of the test piece ductility
d. Communications
Q. The cable that connects the ultrasonic instrument to the search unit is specially designedso that one conductor is centred inside another. The technical name for such a cable is:
a. BX cable
b. Conduit
c. Coaxial cable
d. Ultrasonic conductor cable grade 20
Q. As ultrasonic frequency increases:
a. Wavelength increases
b. Wavelength decreases
c. Sound velocity increases
d. Sound velocity decreases
Q. In an A scan presentation, the amplitude of vertical indications on the screen representsthe:
a. Amount of ultrasonic sound energy returning to the search unit
b. Distance travelled by the search unit
c. Thickness of material being tested
d. Elapsed time since the ultrasonic pulse was generated
Q. Loss of the test piece back wall echo during scanning may be caused by:
a. An abnormally homogeneous material structure
b. A smooth entry surface on the test piece
c. A discontinuity which is not parallel to the entry surface
d. An opposite surface which is parallel to the entry surface
Q. When a sound beam is reflected:
a. The angle of reflection is found using Snell's law
b. The angle of reflection equals the angle of incidence
c. All the sound energy is reflected unless the acoustic impedance is zero
d. Beam spread is decreased
Q. Which of the following circuits converts electrical energy to ultrasonic energy?
a. The pulse generator
b. The transducer
c. The transformer
d. The power supply
Q. An instrument display in which the horizontal base line represents elapsed time andthe vertical deflection represents signal amplitudes is called:
a. A scan
b. B scan
c. C scan
d. A time line display
Q. Which of the following circuits provides short duration, high energy pulses which areused to excite the transducer?
a. The pulse generator
b. The amplifier
c. The transducer
d. The clock