Understanding Control Systems and Feedback

What is the primary purpose of a circuit diagram?

• To illustrate the flow of data in a system

• To represent the physical layout of components

• To symbolically represent electrical connections and components

• To show the sequence of operations in a process

In the 'systems' approach, which of the following is NOT a component?

• Input

• Process

• Feedback

• Output

Which of the following is an example of an input device in a control system?

• Light Emitting Diode (LED)

• Buzzer

• Light Dependent Resistor (LDR)

• Microprocessor

What role does a microprocessor play in a control system?

• It acts as an input device

• It processes data and controls outputs

• It provides feedback to the system

• It functions as an output device

Which of the following is an example of an output device in a control system?

• Thermistor

• Semi-conductor

• Integrated Circuit (IC)

• Buzzer

Why is feedback important in a control system?

• It increases the speed of the system

• It ensures the system operates without errors

• It helps maintain the desired output by adjusting inputs

• It reduces the cost of the system

Which of the following is a method of providing feedback in a control system?

• Using a light bulb

• Implementing a closed-loop system

• Increasing the input voltage

• Decreasing the output signal

Which of the following is a familiar product that uses a control system?

• A mechanical clock

• A digital thermostat

• A wooden chair

• A paper notebook

What type of control device is used for counting, switching, and timing?

• Analogue sensor

• Digital sensor

• Microprocessor

• Semi-conductor

Which of the following best describes an analogue sensor?

• It provides a continuous range of values

• It provides discrete values

• It is used only for digital systems

• It cannot be used in control systems