can be used on a PM550 programmable process controller
is less efficient than normal PID control
cannot use a TM990 micro¬computer
a and b above. E. None of the above
Answer is Right!
Answer is Wrong!
The correct answer is: A. can be used on a PM550 programmable process controller.
Time proportioning control is a type of control that uses time to proportion the output of a controller. It is often used in applications where the process is slow to respond to changes in the setpoint. Time proportioning control can be used on a PM550 programmable process controller.
Option B is incorrect because time proportioning control is not necessarily less efficient than normal PID control. In some cases, it may be more efficient.
Option C is incorrect because time proportioning control can use a TM990 micro¬computer.
Option D is incorrect because only option A is correct.
Option E is incorrect because option A is correct.