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DMS 206 TEST 2 QUESTIONS AND ANSWERS ALL CORRECT

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DMS 206 TEST 2 QUESTIONS AND ANSWERS ALL CORRECT

Institution
DMS 206
Course
DMS 206

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DMS 206 TEST 2 QUESTIONS AND
ANSWERS ALL CORRECT

The conversion of an incident pressure wave to an electrical wave signal is the effect -
Answer- Piezoelectric

The wavelength is directly proportional to the frequency - Answer- false

Which of the following units are appropriate to describe the period of an acoustic wave -
Answer- microseconds

The wavelength of a 5 MHz wave is greater than the wavelength of a 5 kHz wave -
Answer- false

The length of one complete cycle is called: - Answer- Period

What is the period of 10 kHz - Answer- 0.001 s

Propagation speed is determined by - Answer- properties of the medium

If a 2 MHz transducer is used in human soft tissue the wavelength is approximately -
Answer- 0.75 mm

Ultrasound waves in bone are not waves - Answer- longitudinal

What is the propagation speed of a 5 MHz sound wave in soft tissue - Answer- 1.54
mm/us

Longitudinal waves are - Answer- parallel to the axis of the wave propagation

The following are acoustic variables except - Answer- wavelength

What is the velocity of ultrasound in a medium if the wavelength is 4 mm and the
frequency is 5 MHz - Answer- 20000 m/s???

The average velocity of sound in air is - Answer- 330 m/s

What is the wavelength of 3MHz ultrasound in soft tissue - Answer- 0.513 mm

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