Automation System
Relay ladder logic is used in a PC because:

All of these
it is the best industrial control language ever developed.
None of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
it is impossible to write a control program for a machine in any other logic

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Automation System
If the transient response of a system is overdamped:

the value of the output never stabilizes.
the value of the output never exceeds the value of the input during the transient period.
None of these
the value of the output exceeds the value of the input at times during the transient period.
All of these

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Automation System
CAE and CAM are linked through:

assembly automation and tool production.
NC tape programming and automated design
None of these
parts production and testing
a common data base and communications system

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Automation System
What is the process lag?

The time it takes for the sensor to respond to a changed.
None of these
The lag in the error signal when the setpoint is changed.
The time it takes for the mass of the process to respond to an input change.
All of these

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