Which of the following is an application for an ultrasonic proximity switch?
A. Sensing the presence of a metallic object
B. Sensing the presence of a non-metallic object
C. Sensing the level of a liquid
D. Sensing the temperature of an object
Answer:C
Which of the following is an application for an ultrasonic proximity switch?
A. Sensing the presence of a metallic object B. Sensing the presence of a non-metallic object C. Sensing the level of a liquid D. Sensing the temperature of an object
Explanation: Ultrasonic proximity switches are often used to sense the level of a liquid, such as in a tank or container.