Automation System
A proportional plus integral contro-ller can:

None of these
both (b) and (c)
can increase the system type
can compensate for lag
has no transient response

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Automation System
Trend analysis:

is a brand new concept
is used only in financial planning
requires a very expensive system to implement
can improve control system response
None of these

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Automation System
An aneroid barometer

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

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