Obstacle-Avoiding Car Code Quiz

What is the primary function of this Arduino code?

• Controlling an LED strip based on distance measurements

• Allowing a robot car to autonomously navigate and avoid obstacles

• Measuring temperature and displaying results on an LCD screen

• Controlling a robotic arm using servo motors

What component is responsible for detecting obstacles?

• Servo motor (SG90)

• L293B motor driver

• Ultrasonic sensor (HC-SR04)

• Breadboard

What does the following block of code do?

• Moves the robot forward when there is no obstacle

• Rotates the servo to the right, measures the distance, and returns the value

• Makes the robot turn right al the time it detects an obstacle

• Stops the robot and resets the sensor

Which function is responsible for stopping the motors?

• moveStop ( )

• moveForward ( )

• moveBackward ( )

• turnLeft ( )

What is the purpose of the readPing ( ) function?

• To control the servo motor's rotation when it is rotating

• To activate the DC motors

• To read and return the measured distance from the ultrasonic sensor

• To reset the Arduino UNO when an obstacle is detected

Which Arduino pins are used for the ultrasonic sensor’s trigger and echo signals?

• A0 and A1

• 3 and 5

• 8 and 9

• 10 and 11

What happens if the ultrasonic sensor does NOT detect any obstacles?

• The robot moves forward continuously

• The robot stops and waits for an obstacle

• The robot starts moving backward

• The robot beeps and shuts down

What would happen if the servo motor was removed from the circuit?

• The robot would still navigate normally

• The robot would be unable to turn left or right after encountering obstacles

• The robot would move backward continuously

• The ultrasonic sensor would stop working

What happens if the ultrasonic sensor detects an obstacle within 15 cm?

• The robot stops and moves backward before deciding which way to turn

• The robot immediately turns left

• The robot stops and waits indefinitely

• The robot speeds up to avoid the obstacle by turning left or right

Which Arduino pin is the servo motor connected to?

• A0

• A1

• 3

• 9