1|Page
Edelman SPI Exam 2025-2026/Edelman SPI Exam
Preparation/Edelman SPI Practice Exam With Questions
And Correct Answers| Brand New Version!
Waves that exist at the same location and time will combine.
What is this called?
A. inference
B. rarefaction
C. interference
D. longitudinal interaction - ANSWER-C. interference
The combination of many waves into a single wave is called
interference.
Two waves arrive at the same location and
interfere. The resultant sound wave is
smaller than either of the two original
waves. What is this called?
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A. constructive interference
B. angular interaction
C. destructive interference
D. in-phase waves - ANSWER-C. destructive interference
Destructive interference results when a pair of out-of-phase
waves interfere with each other. The sum of the two out-of-
phase waves has a smaller amplitude than at least one of the
original waves.
A pair of waves are in phase. What occurs
when these waves interfere?
A. reflection
B. constructive interference
C. refraction
D. destructive interference - ANSWER-B. constructive
interference
Waves that are in phase constructively interfere with each other.
The single wave that results from the combination of the two in-
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phase waves will always have a higher amplitude than either of
the original waves.
What is the range of periods commonly
found in waves produced by ultrasound
systems?
A. 0.001 to 1 s
B. 0.06 to 0.5 us
C. 0.2 to 1 ms
D. 10 to 100 ns - ANSWER-B. 0.06 to 0.5 us
With standard ultrasonic imaging, what
happens to the period of a wave as it
propagates?
A. increases
B. decreases
C. remains the same - ANSWER-C. remains the same
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Certain parameters of a wave change as the wave travels through
the body. However, the period and the frequency of a wave
typically remain constant as a sound wave propagates.
What determines the period of an
ultrasound wave?
A. the transducer
B. the medium through which the sound travels
C. both A and B
D. neither choice A nor B - ANSWER-A. the transducer
The sound source that produces an acoustic signal determines
the period of a wave
which of the following units are appropriate to describe the
period of an acoustic wave? (More than one answer may be
correct.)
A. minutes
B. microseconds
Edelman SPI Exam 2025-2026/Edelman SPI Exam
Preparation/Edelman SPI Practice Exam With Questions
And Correct Answers| Brand New Version!
Waves that exist at the same location and time will combine.
What is this called?
A. inference
B. rarefaction
C. interference
D. longitudinal interaction - ANSWER-C. interference
The combination of many waves into a single wave is called
interference.
Two waves arrive at the same location and
interfere. The resultant sound wave is
smaller than either of the two original
waves. What is this called?
,2|Page
A. constructive interference
B. angular interaction
C. destructive interference
D. in-phase waves - ANSWER-C. destructive interference
Destructive interference results when a pair of out-of-phase
waves interfere with each other. The sum of the two out-of-
phase waves has a smaller amplitude than at least one of the
original waves.
A pair of waves are in phase. What occurs
when these waves interfere?
A. reflection
B. constructive interference
C. refraction
D. destructive interference - ANSWER-B. constructive
interference
Waves that are in phase constructively interfere with each other.
The single wave that results from the combination of the two in-
,3|Page
phase waves will always have a higher amplitude than either of
the original waves.
What is the range of periods commonly
found in waves produced by ultrasound
systems?
A. 0.001 to 1 s
B. 0.06 to 0.5 us
C. 0.2 to 1 ms
D. 10 to 100 ns - ANSWER-B. 0.06 to 0.5 us
With standard ultrasonic imaging, what
happens to the period of a wave as it
propagates?
A. increases
B. decreases
C. remains the same - ANSWER-C. remains the same
, 4|Page
Certain parameters of a wave change as the wave travels through
the body. However, the period and the frequency of a wave
typically remain constant as a sound wave propagates.
What determines the period of an
ultrasound wave?
A. the transducer
B. the medium through which the sound travels
C. both A and B
D. neither choice A nor B - ANSWER-A. the transducer
The sound source that produces an acoustic signal determines
the period of a wave
which of the following units are appropriate to describe the
period of an acoustic wave? (More than one answer may be
correct.)
A. minutes
B. microseconds
