Study the control loops shown below and answer the following for each control system:

What is the control objective?

Identify the controlled $($ CV$)$ and the manipulated $($MV$)$ variables

c$)$ Explain the causal relationship between the manipulated and the control variable. d Identity possible disturbances that could influence the controlled variable

What is the control strategy?

t$)$ Explain whether the control valve should be opened or closed to increase the value of the controlled variable