Monitoring Systems Quiz

Which type of sensor directly converts a physical quantity into an electrical signal?

• Digital sensor

• Analog sensor

• Microcontroller

• Actuator

Which sensor is commonly used in washing machines to detect excessive vibrations?

• Pressure sensor

• Proximity sensor

• Vibration sensor

• Accelerometer

What is the purpose of an analog-to-digital converter (ADC) in a monitoring system?

• To convert a digital signal to an analog signal

• To amplify the sensor signal

• To process the sensor data

• To convert an analog sensor signal to a digital signal

Which of the following is NOT a common use for a control system?

• Automatic plant watering

• Insulin delivery

• Missile defense

• Monitoring weather patterns

How do digital sensors differ from analog sensors in a monitoring/control system?

• Digital sensors have a built-in ADC to convert the signal.

• Digital sensors are more accurate than analog sensors.

• Digital sensors require less power than analog sensors.

• Digital sensors are only used in more complex systems.

Why are accelerometers commonly used in hard drives?

• To detect sudden movements and protect the disk platters

• To measure the temperature of the hard drive

• To increase the speed of data transfer

• To reduce the noise produced by the hard drive

What is the purpose of a proximity sensor in a car's reverse parking system?

• To detect when the car is approaching an obstacle

• To measure the distance to the nearest object

• To activate the reverse lights when in reverse gear

• To provide feedback to the driver via an audio signal

Which type of sensor is commonly used to monitor methane levels in mines?

• Humidity sensor

• Smoke detector

• Gas sensor

• Accelerometer

How do control systems typically compare sensor data to determine actuator output?

• They compare the sensor data to a preset target value.

• They average the sensor data over time.

• They use the sensor data to generate a random actuator output.

• They compare the sensor data to the previous actuator output.

Which of the following is an example of a monitoring system in a domestic environment?

• Automatic lighting

• Carbon monoxide detector

• Automatic air conditioning

• All of the above