NDI UT Level 2 ASNT Test Questions and Answers Best rated A+ Guaranteed Success Latest Update

another name for compressional name is_______ - CORRECT ANSWER-Longitudinal Wave the piezoelectric material in a search unit which vibrates to produce ultrasonic waves is called a _______ - CORRECT ANSWER-Crystal the amount of beam divergence from a crystal is primarily dependent on the __________ - CORRECT ANSWER-Frequency and Crystal Size when an ultrasonic beam passes through the interface between two dissimilar materials at an angle, a new angle of sound travel takes place in the second material due to ________ - CORRECT ANSWER-Refraction 25 million cycles per second can also be stated as ______ - CORRECT ANSWER-25 MHz which of the following materials of the same alloy is most likely to produce the greatest amount of sound attenuation over a given distance? - CORRECT ANSWER-A CoarseGrained Casting when the motion of the particles of a medium is parallel to the direction of propagation, the wave being transmitted is called a _________ - CORRECT ANSWER-Longitudinal Wave when the motion of the particles of a medium is transverse to the direction of propagation, the wave being transmitted is called a ____________ - CORRECT ANSWER-Shear Wave a term used in ultrasonics to express the rate at which sound waves pass through various substances is _________ - CORRECT ANSWER-Velocity when a vertical indication has reached the maximum signal height which can be displayed or viewed on the CRT of an ultrasonic instrument, the indication is said to have reached its _______ - CORRECT ANSWER-Vertical Level in an A-scan presentation the horizontal base line represents _____ - CORRECT ANSWER-Elapsed Time or Distancean ultrasonic test using straight beam contact search unit is being conducted through the thickness of a flat part such as a plate. this test should detect _______ - CORRECT ANSWER-Laminar-Type Flaws with Major Dimensions Parallel to the Rolled Surface sound waves of a frequency beyond the hearing range of the human ear are referred to as ultrasonic waves or vibrations, and the term embraces all vibrational waves of frequency greater than approx. _________ - CORRECT ANSWER-20 000 Hz