Biomedical Engineering > GATE 2021 > Ultrasound Doppler
A PZT crystal of thickness 1 mm and wave velocity 4000 m/s is emitting a longitudinal pressure wave, which is incident on a blood vessel at an angle of 30°. The doppler shift in the ultrasound wave for a blood flow of 10 cm/s and wave velocity in the soft tissue of 1540 m/s is _______ Hz.
Correct : 222 to 228
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