1. What are the differences between polling and interrupt based processing? Which method is more suitable in digital controller design.
2. Explain why an A/D converter may be required in digital control systems.
3. Explain the operation of an LVDT sensor. You are required to design a motor position control system. Explain what type of position transducer you would use in your design.
4. You are required to measure the flow rate of water entering into a tank. Explain what type of sensor you can use.