Electronincs with Arduino

What is the primary function of a sensor?

• To detect changes in the environment
• To provide power to a device
• To store data
• To process data

Which of the following is not a type of sensor?

• Temperature Sensor
• Pressure Sensor
• Humidity Sensor
• Apple Sensor

Which sensor is commonly used to detect the presence of objects without physical contact?

• Temperature Sensor
• Pressure Sensor
• Proximity Sensor
• Light Sensor

Which type of sensor is used to detect changes in acceleration or motion?

• Thermometer
• Ultrasonic Sensor

• Gyroscope Sensor

• pH Sensor

What does the acronym "IR"?

• Infrared

• Intense Reflection
• Internal Resistance
• Instant Response

Which sensor is commonly used in smartphones to adjust screen brightness based on ambient light conditions?

• Proximity Sensor

• Pressure Sensor

• Dim Sensor

• Light Sensor

Ultrasonic waves have frequencies:

• Lower than 20 Hz
• Between 20 Hz and 20,000 Hz
• Higher than 20,000 Hz
• Exactly 20,000 Hz

What is the principle behind ultrasonic distance measurement using a sensor?

• It uses infrared light to measure distance
• It uses radio waves to measure distance
• It uses sound waves at a frequency higher than humans can hear to measure distance

• It uses visible light to measure distance

Which Arduino board is commonly used for motor control due to its built-in motor driver?

• Arduino Uno
• Arduino Mega
• Arduino Nano

• Arduino Motor Shield

Which motor type is known for its simplicity and is often used in basic robotics projects with Arduino?

• Stepper Motor
• DC Motor
• Servo Motor
• Brushless Motor