Automation System
If the transient response is under damped:

the value of the output will exceed the value of the input at times during the transient period
both a and b
steady-state will be reached faster than if the system is overdamped
None of these
the present overshoot is zero

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Automation System
Light sensors:

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

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