Automation System
Programmable controllers:

are programmed using relay ladder logic
None of these
are widely used in many different industries
(a) and (c) above
cannot perform functions other than relay logic

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Automation System
What is the process lag?

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

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Automation System
A discrete parts process is:

normally a repetitive series of operations
the same as a continuous process except a different controller must be used
often encountered in manufacturing
None of these
(b) and (c)

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