Which of the following principles of operation is used by a capacitive proximity switch?
A. Magnetic fields
B. Ultrasonic waves
C. Infrared light
D. Changes in capacitance
Answer:D
Which of the following principles of operation is used by a capacitive proximity switch?
A. Magnetic fields B. Ultrasonic waves C. Infrared light D. Changes in capacitance
Explanation: A capacitive proximity switch operates based on changes in capacitance when an object comes into close proximity to the sensor.