Automation System
Digitizers can be converted from "dumb" to "smart" through the addition of:

None of these
keyboard
a microprocessor
an electromagnetic coupling
a scanner

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Automation System
A venturi tube:

can be used to measure gas or liquid flow rates
is made only of metal
measures the presence of a liquid
is extremely difficult to use
None of these

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Automation System
A semi-continuous operation means:

each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
None of these
a computer is a required part of the machine
coffee breaks are allowed for the operator
the operation is continuous each shift, but stops between shifts

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Automation System
What is the difference between integral and derivative control?

All of these
None of these
derivative control responds to a change in the rate of change in the error signal
integral control has slower response to an error signal.
derivative control does not eliminate offset error

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