The correct answer is: D. All of the above
Most industrial control applications can be solved using more than one method of control. For example, a process can be controlled using a PID controller, a PLC, or a DCS. The choice of control method will depend on the specific requirements of the process.
Solid-state methods can be used to control industrial processes more reliably than traditional methods. Solid-state devices are less likely to fail than mechanical devices, and they can be more easily controlled and monitored.
The process must be specified correctly to be successful. This means that the process must be well-defined and understood, and the control system must be designed to meet the specific needs of the process.
Here is a brief explanation of each option:
- Option A: Most industrial control applications can be solved using more than one method of control.
There are many different methods of control that can be used in industrial applications. Some common methods include PID control, PLC control, and DCS control. The choice of control method will depend on the specific requirements of the process.
- Option B: Can be done more reliably using solid-state methods.
Solid-state devices are less likely to fail than mechanical devices. They are also more easily controlled and monitored. This makes them a good choice for industrial control applications.
- Option C: Must have the process specified correctly to be successful.
The process must be well-defined and understood before a control system can be designed. The control system must be designed to meet the specific needs of the process.
I hope this helps!