There are several methods for tuning of pid controller parameters, including tri to eror, the continuous cycling method, relay auto-tuning and the step test method ing trial and e (a) describe methods. methodbe the controller tuning procedures for two out of the four tuning (12 marks) what are the major advantages of relay auto-tuning?

what are the two models

explanation:

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the dissolution of polymer can be thermodynamically described in 2 steps.