Automation System
For a type 2 system, the steady-state:

None of these
error for a step input is always zero
All of these
error for a velocity input is always zero
input for acceleration input is always non-zero

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Light sensors:

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

ANSWER DOWNLOAD EXAMIANS APP