Which of the following statements is true about a diffuse-reflective photoelectric proximity switch?
A. The emitter and receiver are housed in the same unit.
B. The emitter and receiver are housed in separate units.
C. The switch requires physical contact with the object being sensed.
D. The switch operates based on changes in magnetic fields.
Answer:A
Which of the following statements is true about a diffuse-reflective photoelectric proximity switch?
A. The emitter and receiver are housed in the same unit. B. The emitter and receiver are housed in separate units. C. The switch requires physical contact with the object being sensed. D. The switch operates based on changes in magnetic fields.
Explanation: A diffuse-reflective photoelectric proximity switch has the emitter and receiver housed in the same unit, and operates based on the reflection of light off of the object being sensed.