Automation System
A flip-flop:

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

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Automation System
What is offset error?

the difference between the control setpoint value and the actual value.
All of these
None of these
the difference between the controller output and the setting of the manipulated variable.
the difference between the sensor input and the absolute sensed parameter.

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Automation System
Semiconductor devices:

All of these
None of these
usually have a very short MTBF (mean time between failure)
have a very short infant mortality period
are less reliable than electro¬mechanical components

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