Impedance matching Study guides, Study notes & Summaries

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...

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...

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...

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? - ...

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? - ...

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 ...

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...

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 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 ...

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...