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Examen
SPI Practice Test Graded A+
SPI Practice Test Graded A+ 
Which of the following do the source and the medium determine? 
a. duty factor 
b. frequency 
c. propagation speed 
d. axial resolution ️d. 
Axial resolution is affected by all of the following EXCEPT 
a. frequency 
b. damping 
c. spatial pulse length 
d. focusing ️d. 
Damping in a transducer 
a. reduces the number of cycles in a pulse and increases the quality factor 
b. increases the number of cycles in a pulse and increases penetration 
c. causes...