Question 1 (a). Control systems can be classified as open-loop (or feedforward) and closed-loop (or feedback). Explain the difference between the two types using block diagrams. You can also use an example to illustrate your explanation. (17 marks (b). List 3 examples applications of how feedback control can be used to improve system performance. You have to clearly explain the way the feedback control is implemented in each. For example, what are the processes to be controlled, sensors and actuators used? [8 marks