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

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

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Automation System
The program counter:

contains the address of the next instruction to be executed
is where arithmetic is done in a computer.
counts the number of instructions that have been executed
None of these
decides which program to run

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Automation System
Digital signals:

are assigned values of 1 or 0 depending on the voltage level
can have three possible levels
None of these
have a sinusoidal shape.
have a frequency measured in units of hertz

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

None of these
run regular simulated tests using TARP (testing of Applications Recovery Planes)
do not leave training manuals unsecured
Verify the reputation of the people installing your system
do not allow unbonded service people to work on your equipment

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