ARDMS SPI Exam Solved 100% Correct

When the direction of the wave propagation is parallel to the particle motion of the medium, the wave being transmitted is called a: A) surface wave. B) longitudinal wave. C) transverse wave. D) non-linear sound. - ANSWER-B) longitudinal wave If the sound beam attenuated 6 dB, what will happen to the overall intensity? A) Quadrupled B) Doubled C) Halved D) Quartered - ANSWER-D) Quartered Frequency increased from 3 MHz to 6 MHz, what will happen to wavelength? A) Doubled B) Quadrupled C) Halved D) Quartered - ANSWER-C) Halved Intensity is equal to: A) power/area B) propagation speed/frequency C) density x propagation speed D) area/power - ANSWER-A) power/area 5. What is important when selecting a transducer frequency? A) Depth B) Power C) Velocity D) Propagation speed - ANSWER-A) Depth 6. Frequency is a factor in: A) impedance B) tissue attenuation C) propagation speed D) tissue density - ANSWER-B) tissue attenuation 7. Which medium interface will have the greatest sound transmission? A) Soft tissue to water B) Organ to organ C) Bone to organ D) Lung to soft tissue - ANSWER-B) Organ to organ