WorksheetsAloTBuddy Project Quiz
Total questions: 15
Worksheet time: 8mins
What is the main focus of the AloTBuddy project?
Sensors
Robotics
Artificial Intelligence
Virtual Reality
What does the DHT11 sensor measure?
Light and sound
Temperature and humidity
Pressure and altitude
Speed and distance
What function is used to initialize the DHT sensor in the code?
Serial.begin()
dht.readHumidity()
dht.begin()
delay(2000)
Why is a PIR sensor called "passive"?
It emits energy
It does not emit energy
It uses sound waves
It requires manual activation
What is the purpose of the `Serial.begin(9600);` command in the setup function?
To set the sensor pin number
To start serial communication at 9600 baud rate
To read the analog value of the sensor
To delay the program for 50 milliseconds
How does the MQ2 Gas Sensor work?
It uses a laser to detect gases
It changes color when gas is present
It changes resistance with gas concentration
It vibrates when gas is detected
In which applications is the MQ2 Gas Sensor commonly used?
Cooking and baking
Gas leak detection and safety systems
Painting and drawing
Music and sound production
What is the purpose of the `Serial.begin(9600);` command in the setup function?
To start the gas sensor
To initialize the sensorPin
To start serial communication at 9600 baud rate
To delay the program for 50 milliseconds
What does the `analogRead(sensorPin);` function do in the loop?
It writes data to the sensor
It reads the analog value from the sensorPin
It delays the program for 100 milliseconds
It prints text to the serial monitor
What type of signals can a flame sensor output?
Only digital signals
Only analog signals
Both analog and digital signals
Only binary signals
What is the range of distance that the HC-SR04 Ultrasonic Sensor can measure?
2cm to 400cm
1cm to 300cm
5cm to 500cm
10cm to 1000cm
Why is the HC-SR04 Ultrasonic Sensor popular for DIY projects?
It is expensive and complex
It is compact, reliable, and easy to integrate
It requires special software
It is only used in professional settings
What type of sensor is the TTP223B?
Capacitive touch sensor
Temperature sensor
Light sensor
Pressure sensor
What does the `Serial.begin(9600)` function do in the code?
It sets the sensor pin as an input
It starts the serial communication
It reads the sensor value
It delays the program
In the code, what happens when `digitalRead(sensorPin) == 1`?
The program prints "No touch detected..."
The program prints "Touch detected!"
The program stops
The program restarts
