Automation System
Many things can be done to minimize downtime loss. Identify two of them.

provide an extra workstation
None of these
stock critical spare parts
both b and c
establish a user forum program

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Automation System
Light sensors:

never use infrared light as light source
come in a wide variety of mounting styles
work in direct sunlight
cannot be used a s limit switches.
None of these

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

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

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Automation System
How is the integral mode implemented on a digital controller?

All of these
the digital controller cannot handle integral mode
None of these
the error signal is summed over a discrete time interval and accumulated by the controller
the error is divided into discrete amounts

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