Describe what process equalibrium is? 2. What are the 5 conditions that occur when the controller is in state of change. List each and give a brief definition of each one. (5 points) 3. What is the difference between feedback control and feedforward control? 4. Describe the relationship between direct acting (output to input signais) and reverse acting (output to input signals). (2 points) 5. What does tuning a controller mean? 6. What three controller settings or tuning parameters make up a PID controller? 7. What happens to a controller if the gain is set too high? What happens if the gain is set too low? (2 points) 8. What happens to a controller that is said to be hunting? 9. Why is gain or proportional band seldom used alone in new controllers? 10. What are 2 process conditions that could cause cycling or hunting?

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