Arduino Sensors Quiz

Which of the following devices allows an Arduino board to interact with the environment by detecting changes and transforming them into electrical signals?

• Arduino Shields

• Arduino Sensors

• Arduino Boards

• Arduino Actuators

It is a Type of Sensor Variable that measures the electromagnetic radiation in a range of wave frequencies emitted.

• Flow

• Pressure

• Humidity

• Light

Which of the following statements is true about DHTXX sensors used by Arduino tinkerers?

• They are expensive sensors used to measure light intensity.

• They are inexpensive sensors used to measure temperature and humidity.

• They are used to measure sound and vibration.

• They are only compatible with advanced Arduino boards.

Which sensor measures absolute air pressure, has a range of 300hPa to 1100hPa, can measure altitude and temperature, and communicates with an Arduino via I2C interface using just 2 pins?

• DHT22 Sensor

• BMP180 Barometric Sensor

• LM35 Temperature Sensor

• MQ-2 Gas Sensor

How does the resistance of a water sensor's collector board relate to the amount of water on its surface?

• When the board is wet, the resistance decreases, and the output voltage increases.

• When the board is dry, the resistance increases, and the output voltage decreases.

• When the board is wet, the resistance increases, and the output voltage decreases.

• When the board is dry, the resistance increases, and the output voltage increases.

Which of the following sensors is commonly used to detect soil moisture and is ideal for building an automatic watering system or monitoring plant soil moisture?

• YL-69

• DHT11

• BMP180

• MQ-2

What type of output signals can be obtained from the soil moisture sensor module described?

• Only analog signal

• Only digital signal

• BMP180

• MQ-2

Which sensor uses sonar to determine distance to an object, offering non-contact range detection with high accuracy and stable readings, and can measure distances from 2 cm to 400 cm (1 inch to 13 feet)?

• DHT11 Temperature Sensor

• HC-SR04 Ultrasonic Sensor

• LDR Light Sensor

• MQ-2 Gas Sensor

Which sensor is commonly referred to as an inclinometer, tilt switch, or rolling ball sensor, and is used to detect orientation or inclination?

• Proximity Sensor

• Tilt Sensor

• Temperature Sensor

• Ultrasonic Sensor

What type of switch is encased in a plastic shell and is commonly used on doors, windows, or drawers to detect if they are open or closed?

• Pressure Switch

• Push Button Switch

• Toggle Switch

• Reed Switch