Automation System
Semiconductor devices:

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

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Automation System
Most industrial control applications:

can be done more reliably using solid-state methods
None of these
can be solved using more than one method of control
All of these
must have the process specified correctly to be successful

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