Automation System
One advantage of a PC in industrial control is that it:

is very difficult for the inexperienced programmer to understand
has a reliable long life compared to relay logic
None of these
All of these
is unreliable because there are no moving parts

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Automation System
If the transient response is under damped:

the value of the output will exceed the value of the input at times during the transient period
steady-state will be reached faster than if the system is overdamped
the present overshoot is zero
None of these
both a and b

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