A. System to stop a train if it passes a red light
B. System to indicate not returning of the library book
C. System to shut down a reactor if temperature/pressure are too high
D. None of the mentioned
Explanation: A Protection system is a specialized system that is associated with some other control system, which can take emergency action if a failure occurs.
Correct Answer: System to indicate not returning of the library book ✔
Last Updated: February 04, 2019