Week 3 Arduino Basics Quiz

What does the Void setup() function in Arduino do?

• Runs the main loop of the program

• Sets up variables only

• Runs once at the beginning of the program

• Continuously executes code

What is the purpose of the Void loop() function in Arduino?

• Stores sensor data

• Executes code once only

• Repeats code continuously

• Uploads data to the cloud

Which keyword starts a conditional statement in Arduino?

• while

• loop

• if

• repeat

What will the following code do? int x = 10; if (x > 5) { digitalWrite(LED_BUILTIN, HIGH); }

• Turn off the LED

• Flash the LED

• Turn on the LED

• Do nothing

Which of the following is a correct for loop in Arduino that will increase I by 1 until it reaches 10?

• for (int i = 0; i < 10; i++)

• for (int i = 0; i <= 10; i--)

• for (int i = 0; i < 10; i--)

• for (int i = 0; i++)

What will the following code print if temp = 28? if (temp > 30) { Serial.println("Hot"); } else if (temp > 20) { Serial.println("Warm"); } else { Serial.println("Cold"); }

• Hot

• Warm

• Cold

• Nothing

What does delay(1000); do in Arduino?

• Stops the code permanently

• Runs the loop faster

• Delays for 1 second

• Turns off the Arduino

What will the following loop do?

• Print numbers 0 to 2

• Print numbers 1 to 3

• Print 3 times: 0, 1, 2

• Print 3 times: 1, 2, 3

What happens if the condition in an if statement is false?

• The code inside the if still runs

• An error occurs

• The Arduino shuts down

• The code inside the if is skipped

Which of the following best describes else if?

• Checks another condition if the previous if was false

• Runs only if the if is true

• Runs no matter what

• Only used in loops