What type of control system has the ability to measure the ...

[audragclark]

What type of control system has the ability to measure the controlled variable and the system output and dynamically adjust the setpoint to achieve more precise control?
 
  A) Modulating controls B) Proportional integral derivative (PID) controls
  C) Two-position controls D) Proportional controls

Question 2

Pneumatic controls operate by:
 
  A) Hydraulic pressure. B) Air pressure.
  C) Water pressure. D) Electricity.

[Ksanderson1296]

Answer to Question 1

B

Answer to Question 2

B

[audragclark]

Excellent

[parshano]

Thanks for the timely response, appreciate it