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SPI TEST EXAM AND PRACTICE EXAM QUESTIONS
2025 COMPLETE EXAM QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+/ BRAND NEW!!!
Which of the following do the source and the medium
determine?
a. duty factor
b. frequency
c. propagation speed
d. axial resolution - Answer-d.
Axial resolution is affected by all of the following EXCEPT
a. frequency
b. damping
c. spatial pulse length
d. focusing - Answer-d.
Damping in a transducer
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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 poor axial and lateral resolution
d. reduces the duty factor and increases the range of
transmitted frequencies - Answer-d.
Far zone beam divergence can be reduced on a single-
element transducer by using
a. a transducer with a smaller element diameter
b. a higher frequency transducer
c. a lower frequency transducer or a smaller element
diameter
d. adjustable focusing - Answer-b.
The area between the face of an unfocused single-
element transducer and the point where the beam starts to
diverge is the
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a. Fraunhofer zone
b. refraction zone
c. focal zone
d. near zone - Answer-d.
Assuming a fixed frequency, what happens if the diameter
of an unfocused transducer is increased?
a. the far zone divergence increases
b. the penetration decreases
c. the length of the near zone increases
d. the length of the near zone decreases - Answer-c.
Which of the following does NOT affect lateral resolution?
a. focusing
b. element diameter
c. frequency
d. bandwidth - Answer-d.
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Higher frequency transducers provide
a. improved lateral resolution
b. smaller Doppler shifts
c. improved axial resolution and reduced attenuation
d. increased penetration - Answer-a.
Ultrasound waves that are traveling through a medium
consist of
a. electromagnetic and radio frequencies
b. compressions and refractions
c. electromagnetic and ionizing frequencies
d. compressions and rarefactions - Answer-d.
What is the difference between audible sound and
ultrasound?
a. audible sound waves can travel through a vacuum
b. audible sound has a higher frequency
c. ultrasound has a higher frequency
SPI TEST EXAM AND PRACTICE EXAM QUESTIONS
2025 COMPLETE EXAM QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+/ BRAND NEW!!!
Which of the following do the source and the medium
determine?
a. duty factor
b. frequency
c. propagation speed
d. axial resolution - Answer-d.
Axial resolution is affected by all of the following EXCEPT
a. frequency
b. damping
c. spatial pulse length
d. focusing - Answer-d.
Damping in a transducer
,2|Page
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 poor axial and lateral resolution
d. reduces the duty factor and increases the range of
transmitted frequencies - Answer-d.
Far zone beam divergence can be reduced on a single-
element transducer by using
a. a transducer with a smaller element diameter
b. a higher frequency transducer
c. a lower frequency transducer or a smaller element
diameter
d. adjustable focusing - Answer-b.
The area between the face of an unfocused single-
element transducer and the point where the beam starts to
diverge is the
,3|Page
a. Fraunhofer zone
b. refraction zone
c. focal zone
d. near zone - Answer-d.
Assuming a fixed frequency, what happens if the diameter
of an unfocused transducer is increased?
a. the far zone divergence increases
b. the penetration decreases
c. the length of the near zone increases
d. the length of the near zone decreases - Answer-c.
Which of the following does NOT affect lateral resolution?
a. focusing
b. element diameter
c. frequency
d. bandwidth - Answer-d.
, 4|Page
Higher frequency transducers provide
a. improved lateral resolution
b. smaller Doppler shifts
c. improved axial resolution and reduced attenuation
d. increased penetration - Answer-a.
Ultrasound waves that are traveling through a medium
consist of
a. electromagnetic and radio frequencies
b. compressions and refractions
c. electromagnetic and ionizing frequencies
d. compressions and rarefactions - Answer-d.
What is the difference between audible sound and
ultrasound?
a. audible sound waves can travel through a vacuum
b. audible sound has a higher frequency
c. ultrasound has a higher frequency
