Automation System
D/A (digital to analog) conversion:

has to be sampled at 1/2 the highest input frequency
results in a binary code as the final output
must be fed through a filter to reproduce the original signal accurately
None of these
both (b) and (c)

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Automation System
An aneroid barometer

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

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Automation System
High-level languages:

require knowledge of the computer design
are very difficult to use
cannot be used with automatic systems.
None of these
are "procedure-oriented"

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Automation System
Most industrial control applications:

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

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