Virtual Labs

An object is placed at an unknown distance in front of the sensor, and the echo pin generates a pulse with a width of 500µs. What is the calculated distance?

a: 17 cm Explanation

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b: 34 cm Explanation

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c: 8.5 cm Explanation

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d: None of these Explanation

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Which of the following factors can affect the accuracy of an ultrasonic sensor?

a: Temperature variations Explanation

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b: Humidity levels Explanation

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c: Surface material and angle of the object Explanation

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d: All of the above Explanation

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Why is a voltage divider used when interfacing the HC-SR04 sensor with a Raspberry Pi?

a: To amplify the signal from the sensor Explanation

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b: To convert the 5V output of the sensor to 3.3V compatible with Raspberry Pi GPIO Explanation

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c: To stabilize the power supply Explanation

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d: It is not necessary to use a voltage divider Explanation

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Which principle does an ultrasonic sensor use to measure distance?

a: Infrared reflection Explanation

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b: Time-of-flight measurement using sound waves Explanation

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c: Radio frequency wave propagation Explanation

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d: Optical triangulation Explanation

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