Automation System
What Is a process variable?

None of these
A controlled variable
All of these
A manipulated variable
A process parameter that changes value

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Automation System
Semiconductor devices:

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

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Automation System
A flip-flop:

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

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