FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

Switch License

Question E6F05

From subelement E6 - E6F

E6F05
Answer: A

Which of the following describes an optical shaft encoder?

AA device that detects rotation by interrupting a light source with a patterned wheel
BA device that measures the strength of a beam of light using analog-to-digital conversion
CAn optical computing device in which light is coupled between devices by fiber optics
DA device for generating RTTY signals by means of a rotating light source