Sensors Quiz

What is a sensor?

• A device that detects and responds to physical stimuli
• A device that converts electrical energy into mechanical energy
• A device that converts mechanical energy into electrical energy
• A device that produces physical stimuli

Which sensor is commonly used in automatic hand sanitizer dispensers?

• Pressure sensor
• Accelerometer
• Temperature sensor
• Infrared sensor

What is the purpose of a light sensor in a smart home system?

• To control the temperature in a room
• To detect motion in a room
• To monitor the humidity level in a room
• To detect the amount of light in a room

Which sensor is used in fitness trackers to measure heart rate?

• Gas sensor
• Optical sensor
• Ultrasonic sensor
• Gyroscope

What type of sensor is used in smoke detectors?

• Capacitive sensor
• Magnetic sensor
• Proximity sensor
• Photoelectric sensor

How do temperature sensors work?

• By measuring changes in electrical resistance
• By detecting changes in air pressure
• By producing heat
• By emitting sound waves

What is the purpose of a motion sensor in security systems?

• To detect air pollution
• To detect movement and trigger an alarm
• To control lighting
• To measure temperature

What is an analog to digital converter?

• A device that converts analog signals to digital signals
• A device that converts video signals to audio signals
• A device that converts digital signals to analog signals
• A device that converts audio signals to video signals

What is the purpose of an analog to digital converter?

• To convert audio signals to video signals
• To convert digital data to analog data
• To convert video signals to audio signals
• To convert analog data to digital data

Which of the following is a type of magnetic sensor?

• Temperature sensor
• Pressure sensor
• Hall effect sensor
• Optical sensor