Which of the following is not a common electronic sensor?

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Multiple Choice

Which of the following is not a common electronic sensor?

All the options listed are widely used electronic sensors in automation. A photoelectric sensor uses light to detect objects or presence, an inductive proximity sensor senses metal targets by changes in an electromagnetic field, and a capacitive proximity sensor detects nearby materials by changes in capacitance. Because each of these is a common electronic sensor, there isn’t one that isn’t common among the choices. That makes “none of the above” the correct answer. If you’re curious, there are other sensor types too (like ultrasonic or magnetic switches), but they don’t change the fact that the three shown are standard electronic sensors.

All the options listed are widely used electronic sensors in automation. A photoelectric sensor uses light to detect objects or presence, an inductive proximity sensor senses metal targets by changes in an electromagnetic field, and a capacitive proximity sensor detects nearby materials by changes in capacitance. Because each of these is a common electronic sensor, there isn’t one that isn’t common among the choices. That makes “none of the above” the correct answer. If you’re curious, there are other sensor types too (like ultrasonic or magnetic switches), but they don’t change the fact that the three shown are standard electronic sensors.

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