ADD-ON Course Test-2

What is Primary function of Ultrasonic sensor in Arduino Interfacing?

• Detecting temperature of an object
• Playing music
• Sending text messages
• Measure distance of an object

Which Ultrasonic function is Commonly used to trigger the ultrasonic sensor?

• analogRead()
• digitalWrite()
• pulseIn()
• tone()

What is Purpose of Echo Pin in Ultrasonic Sensor ?

• To receive the ultrasonic sound waves that are reflected back after hitting an object
• To emit ultrasonic sound waves
• To detect the color of the object
• To measure the distance between the sensor and the object

How does ultrasonic sensor measure distance using Arduino?

• By using a camera to capture the distance
• By measuring the temperature of the object
• By analyzing the color of the object
• By measuring the time for ultrasonic wave to travel back

Which Arduino function is used to measure distance of reflected wave of ultrasonic sensor?

• millis()

• micros()

• delay()

• pulsein()

What unit is typically used to express distance measure by an ultrasonic sensor in Arduino Projects?

• Kilograms
• Miles
• Centimeters
• Inches

Ultrasonic sensor is designed on basis of which Animal/Bird Instinct?

• Elephant
• Bat
• Eagle
• Dolphin

Which Arduino Board is commonly use for interfacing with Arduino?

• Arduino UNO

• Arduino Mega

• Arduino Nano

• Raspberry Pi

What is typical range of an Ultrasonic Sensor used with Arduino for Distance Measurement?

• 10cm to 1000cm
• 2cm to 400cm
• 1cm to 500cm
• 5cm to 300cm

For triggering the Ultrasonic wave for how much time we have to make Trig Pin ?

• 1 millisecond
• 10 microseconds
• 20 microseconds
• 5 microseconds