EDELMAN SPI COMPREHENSIVE EXAM
QUESTIONS WITH ANSWERS NEW MODIFIED
TESTED AND APPROVED GRADED A+ 2026 NEW
UPDATE
As a result of _____ the propagation speed increases
increasing stiffness and increasing density
increasing stiffness and increasing elasticity
decreasing compressibility and decreasing density
decreasing stiffness and decreasing density --CORRECT ANSWER--decreasing
compressibility and decreasing density
Put in decreasing order of propagation speed
gas
liquid
solid --CORRECT ANSWER--solid, liquid, gas
If the frequency of US is increased from 0.77 MHz to 1.54 MHz, what happens
to the wavelength?
Page 1 of 82
,doubles
halved
remains the same
4 times greater --CORRECT ANSWER--halved
A sound wave's frequency is 10MHz. The wave is traveling in soft tissue. What
is the wavelength?
0.15 mm
1.54 mm
15.4 mm
0.77 mm
10 MHz --CORRECT ANSWER--0.15 mm
If the frequency of an US wave is doubled, what happens to the period?
doubles
halved
remains the same
4 times greater --CORRECT ANSWER--halved
Page 2 of 82
,If the frequency of US is increased from 0.77 MHz to 1.54 MHz, what happens
to the propagation speed?
doubled
halved
remains the same
4 times greater than --CORRECT ANSWER--remains the same
The units of pulse repetition frequency are
per minute
msec
mm/us
MHx --CORRECT ANSWER--per minute
The time from the beginning of a pulse until its end is _____?
period
pulse duration
pulse length
Page 3 of 82
, PRF --CORRECT ANSWER--pulse duration
What happens to the speed of sound in a medium when the bulk modulus of the
medium increases?
faster
slower
unchanged --CORRECT ANSWER--faster
_____ resolution is determined by the spatial pulse length
radial
image
axial
angular --CORRECT ANSWER--radial, axial
If a wave's amplitude is doubled, what happens to the power?
Page 4 of 82
QUESTIONS WITH ANSWERS NEW MODIFIED
TESTED AND APPROVED GRADED A+ 2026 NEW
UPDATE
As a result of _____ the propagation speed increases
increasing stiffness and increasing density
increasing stiffness and increasing elasticity
decreasing compressibility and decreasing density
decreasing stiffness and decreasing density --CORRECT ANSWER--decreasing
compressibility and decreasing density
Put in decreasing order of propagation speed
gas
liquid
solid --CORRECT ANSWER--solid, liquid, gas
If the frequency of US is increased from 0.77 MHz to 1.54 MHz, what happens
to the wavelength?
Page 1 of 82
,doubles
halved
remains the same
4 times greater --CORRECT ANSWER--halved
A sound wave's frequency is 10MHz. The wave is traveling in soft tissue. What
is the wavelength?
0.15 mm
1.54 mm
15.4 mm
0.77 mm
10 MHz --CORRECT ANSWER--0.15 mm
If the frequency of an US wave is doubled, what happens to the period?
doubles
halved
remains the same
4 times greater --CORRECT ANSWER--halved
Page 2 of 82
,If the frequency of US is increased from 0.77 MHz to 1.54 MHz, what happens
to the propagation speed?
doubled
halved
remains the same
4 times greater than --CORRECT ANSWER--remains the same
The units of pulse repetition frequency are
per minute
msec
mm/us
MHx --CORRECT ANSWER--per minute
The time from the beginning of a pulse until its end is _____?
period
pulse duration
pulse length
Page 3 of 82
, PRF --CORRECT ANSWER--pulse duration
What happens to the speed of sound in a medium when the bulk modulus of the
medium increases?
faster
slower
unchanged --CORRECT ANSWER--faster
_____ resolution is determined by the spatial pulse length
radial
image
axial
angular --CORRECT ANSWER--radial, axial
If a wave's amplitude is doubled, what happens to the power?
Page 4 of 82
