Automation System
Semiconductor devices:

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

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Automation System
What is the process lag?

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.
The lag in the error signal when the setpoint is changed.
None of these

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Automation System
An aneroid barometer

can be used to measure gas or liquid flow rates
is very unreliable
can measure only atmospheric pressure
None of these
measures pressure by sensing deflection of an evacuated chambers.

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Automation System
If the transient response is under damped:

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

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