Impedance matching Study guides, Study notes & Summaries
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CETA Exam Questions And Answers
- Exam (elaborations) • 7 pages • 2023
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CETA Exam Questions And 
Answers 
VGA - ANSWER- 640 x 480 
256 Colors 
15 Pins 
SVGA - ANSWER- 800 x 600 
256 Colors 
15 Pins 
XGA - ANSWER- 1024 x 768 or 1366 x 768 
16 mil, HD Colors 
15 Pins 
Widescreen - ANSWER- 1280 x 720 or 1920 x 1080 
DVI or HDMI Connectors 
Random Access Memory - ANSWER- RAM 
Read Only Memory - ANSWER- ROM 
Programmable Read Only Memory - ANSWER- PROM 
Electrical Programmable Read Only Memory - ANSWER- EPROM 
Electrically Erasable PROM - ANSWER- EEPROM 
50 Ohms - ANSWE...
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Edelmen's SPI Exam Review Test Answered 100% Correctly!
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Edelman SPI review questions & Answers 2023. 
______ is the distance covered by one cycle. 
a) pulse length 
b) wavelength 
c) cycle distance 
d) cycle duration 
 
______ is the time to complete one cycle 
a) pulse duration 
b) pulse period 
c) period 
d) duration period 
 
________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: 
a) refraction 
b) Rayleigh Scattering 
c) scattering 
d) reflection 
 
_________ resolution is...
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Ultrasound Physics: SPI Review, ALL Chapters, Formulas & Relationships UPDATED 2022
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The fundamental or operating frequency - is affected by the thickness of the PZT element 
Which could not be used as the coupling medium (gel)? - barium sulfate 
The piezo electric effect is best described as - deformation from voltage sent to the crystals 
How thick is the element if the frequency is 3 MHz? - half the wavelength of the wave in the PZT 
The gel has greater impedance that the matching layer but less than the impedance of the PZT elements' 
- false 
The impedance of the PZT cryst...
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ILE Hearing Aid Dispenser Practice Test Questions and Answers 100% Correct
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What BEST describes the effect on the patient if you continue to lower a hearing 
instrument's kneepoint and increase the compression ratio? Choose ALL that apply. 
A. a lot of gain for soft sounds 
B. very few speech cues in a crowded party 
C. little or no gain for moderately loud sounds 
D. too much amplification in a crowded party - ANSWER-A,B, & C 
 
What frequencies would be MOST affected by a head cold? - ANSWER-Low frequencies. 250,500 
 
What is found on the bottom of the ear canal? - ...
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Hearing Aid Dispenser Practice Test Questions with Verified Answers
- Exam (elaborations) • 15 pages • 2023
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What BEST describes the effect on the patient if you continue to lower a hearing 
instrument's kneepoint and increase the compression ratio? Choose ALL that apply. 
A. a lot of gain for soft sounds 
B. very few speech cues in a crowded party 
C. little or no gain for moderately loud sounds 
D. too much amplification in a crowded party - ANSWER-A,B, & C 
 
What frequencies would be MOST affected by a head cold? - ANSWER-Low frequencies. 250,500 
 
What is found on the bottom of the ear canal? - ...
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PHYSICS ARRT SONOGRAPHY questions with correct answers
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piezoelectric effect? CORRECT ANSWER property of certain materials to create a voltage when pressure is applied 
-indirect piezoelectric effect 
 
reverse piezoelectric effect? CORRECT ANSWER property of certain materials to deform when voltage is applied to them and create pressure (sound) 
 
-direct piezoelectric effect 
 
what piezoelectric material is used in ultrasound transducers? CORRECT ANSWER lead zirconate titanate (PZT) 
 
PZT crystal thickness? CORRECT ANSWER 1/2 wavelength thick 
 ...
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Ultrasound Physics: SPI Review, ALL Chapters, Formulas & Relationships | 715 Questions with 100% Correct Answers | Verified | Latest Update 2024 | 64 Pages
- Exam (elaborations) • 64 pages • 2023
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The fundamental or operating frequency - is affected by the thickness of the PZT element 
Which could not be used as the coupling medium (gel)? - barium sulfate 
The piezo electric effect is best described as - deformation from voltage sent to the crystals 
How thick is the element if the frequency is 3 MHz? - half the wavelength of the wave in the PZT 
The gel has greater impedance that the matching layer but less than the impedance of the PZT elements' 
- false 
The impedance of the PZT cryst...
-
Ultrasound Physics: SPI Review, ALL Chapters, Formulas & Relationships | 715 Questions with 100% Correct Answers | Verified | Latest Update 2024
- Exam (elaborations) • 64 pages • 2024
- Available in package deal
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- R299,87
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The fundamental or operating frequency - is affected by the thickness of the PZT element 
Which could not be used as the coupling medium (gel)? - barium sulfate 
The piezo electric effect is best described as - deformation from voltage sent to the crystals 
How thick is the element if the frequency is 3 MHz? - half the wavelength of the wave in the PZT 
The gel has greater impedance that the matching layer but less than the impedance of the PZT elements' 
- false 
The impedance of the PZT cryst...
-
ARDMS SPI Exam Review (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A
- Exam (elaborations) • 113 pages • 2023
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ARDMS,SPI Exam Review (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A 
 
Q: What happens to axial resolution when spatial pulse length is decreased? 
 
 
Answer: 
improves 
 
 
 
Q: How much will a 3.5 MHz pulse be attenuated after passing through 2 cm of soft tissue? 
 
 
Answer: 
3.5 dB 
 
 
 
Q: Propagation speed errors result in 
 
 
Answer: 
improper axial position 
 
 
 
Q: Enhancement is caused by 
 
 
Answer: 
weakly attenuating structures 
 
 
 
...
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SPI exam review questions & answers 2024
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SPI exam review questions & answers 2024 
 
 
When using a 3-6MHz transducer, which frequency will offer the best penetration? - ANSWER-3MHz 
 
Which transducer component improves lateral resolution? - ANSWER-pulser 
 
3. Mirrors and lenses can be used to ________________. 
 
• A. improve sound transmission into the body 
• B. increase the PRF of the transducer 
• C. electronically focus the US beam 
• D. mechanically focus the US beam - ANSWER-D. mechanically focus the US beam 
 
4. Wh...
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