True or False: A process transfer function is the ratio of the input of the process to the output of

the process.

True or False: Feedback control is possible regardless of if the controlled variable of interest can

be measured on$-$line.

The open$-$loop amplitude ratio of a system at its crossover frequency was determined to be $1\mathrm{.}2.$

Which of the following best describes this system

a$.$ Not Enough Information

b$.$ Closed$-$Loop Unstable

c$.$ Closed$-$Loop Stable

d$.$ Closed$-$Loop Marginally Stable