Automation System
A flip-flop:

remembers what was previously stored in it
(a) and (c)
is a sequential logic device
is a combinational logic device
None of these

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Automation System
A process controller:

is useful in a continuous process control application
can solve a PID process control equation easily
None of these
can interface to digital and analog I/O
All of these

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Automation System
What is proportional control?

The controller output varies continuously over a range
The gain is independent of offset error.
None of these
It has a discrete output for each error value
All of these

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