Automation System
What is the process lag?

None of these
The lag in the error signal when the setpoint is changed.
All of these
The time it takes for the mass of the process to respond to an input change.
The time it takes for the sensor to respond to a changed.

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Automation System
Time proportioning control:

is less efficient than normal PID control
can be used on a PM550 programmable process controller
cannot use a TM990 micro¬computer
a and b above.
None of these

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