Ultrasound Basics Quiz

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Questions and Answers

What is the frequency range of ultrasound?

  • 20,000 Hz exactly
  • Less than 20 Hz
  • 20 Hz to 20,000 Hz
  • More than 20,000 Hz (correct)

What is the purpose of the transmitter in the HC-SR04 ultrasonic distance sensor?

  • Listens for the transmitted pulses
  • Supplies power to the sensor
  • Converts electrical signal into 40 KHz ultrasonic sound pulses (correct)
  • Produces an output pulse proportional to distance

What is the max range for non-contact detection of the HC-SR04 sensor?

  • ~13 feet
  • 4m (correct)
  • ~10 feet
  • ~5 meters

What is the measuring angle of the HC-SR04 ultrasonic sensor?

<p>15 degrees (B)</p> Signup and view all the answers

What is the operating voltage of the HC-SR04 ultrasonic sensor?

<p>DC 5V (D)</p> Signup and view all the answers

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