Question

which of the following is not a component of a limit switch?
actuating mechanism
optical sensor
contacts
all of the above
flag reset
previous next

Explanation:

A limit switch typically has an actuating mechanism (to trigger the switch) and contacts (to make/break electrical connections). Optical sensors are not a standard component of a basic limit switch (limit switches often use mechanical actuation and contact mechanisms, while optical sensors are part of photoelectric sensors, a different category).

Answer:

B. Optical sensor