Engine 2014: Electricity

1. A The computer has no role in the various closed-loop control processes regardless of the control mode.
2. B The computer normally has no role in the various closed-loop control processes. It is only used for backup control purposes.
3. C The computer provides the setpoint input data to the analog controllers, but the analog controllers actually control the closed-loop processes.
4. D The computer provides the setpoint input data to the process control loop, as well as the measured variable data. The analog controllers are only used for manual backup control.

Tip: press A-D to answer