You need a sensor with high margins to count very reflective objects 100 mm from the sensor in a dirty enviroment. What is the best sensor to use?
A) Diffuse photoelectric
B) Capacitive proximity
C) Transmitted beam photoelectric
D) Retroreflective photoelectric
E) None of the above
C
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When asked to find the magnitude and direction of all branch currents using the superposition theorem, our first step is to eliminate all but one of the batteries by replacing them with a ____.
a. resistor b. short circuit c. direct circuit d. larger power source
Describe an atomizing humidifier.
What will be an ideal response?
How often should live circuits be worked on?
A) When somewhat necessary B) Only when absolutely necessary C) When the power goes out D) Whenever deemed necessary
The RTO timer in an SLC 500 PLC must use a reset command to force the accumulator back to a zero value
Indicate whether the statement is true or false