Ict summative

What is a sensor?

• A device that outputs physical quantities

• A device that inputs digital data

• A device that inputs physical quantities

• A device used for data storage

Which sensor is commonly used in automatic washing machines?

• Light Sensor

• Temperature Sensor

• Sound Sensor

• pH Sensor

What is the primary advantage of using sensors over human operators?

• Cheaper to produce

• More accurate readings

• Easier to maintain

• Longer lifespan

What is the disadvantage of most sensors being analogue?

• They are too accurate

• They require an ADC for conversion

• They do not need power to operate

• They can only measure temperature

What is the purpose of an ADC in sensor technology?

• Convert digital data to analogue data

• Convert analogue data to digital data

• Store data for long-term use

• Increase the accuracy of sensors

In control applications, what role does the microprocessor play with sensor data?

• Stores the data without processing

• Takes action to change input conditions based on data

• Only displays the data for user interpretation

• Converts the data from digital to analogue

What kind of sensors are used in weather stations?

• Temperature and Light Sensors only

• Sound and pH Sensors only

• Rainfall, Temperature, Wind Speed, and Humidity Sensors

• Humidity and Pressure Sensors only

What technology is used to recognize vehicle number plates automatically?

• GPS

• 3D Printing

• ANPR

• RFID

What is a major benefit of 3D printers?

• They can only print in two dimensions

• They allow rapid prototyping

• They use a lot of energy

• They cannot produce functional objects

What disadvantage does RFID technology have?

• It requires direct contact to read tags

• It is slow in reading data

• Tag collision and vulnerability to jamming

• It can only store a small amount of data