If primary power fails on a fire alarm system, which statement is correct regarding operational requirements?

In the context of fire alarm systems, it's essential that operational reliability is maintained even in the event of a primary power failure. The correct statement, which emphasizes that "no signals shall be lost or delayed by more than 10 seconds," reflects this critical requirement. Fire alarm systems are designed to have fail-safes and backup measures that enable them to function effectively during power outages, ensuring that alerts are promptly delivered to provide necessary warnings for safety.

This standard is vital for reducing the risk of inadequate response during emergencies. A delay of more than 10 seconds or the loss of signals would jeopardize the system's efficiency and reduce its effectiveness during a critical situation, potentially endangering lives and property. This operational requirement ensures that the fire alarm system can still alert authorities and occupants of a facility to the presence of a fire even when primary power is unavailable.

In contrast, the other statements propose conditions that do not meet the essential reliability required for fire alarm systems. For example, a loss or delay of signals beyond 10 seconds would be unacceptable, undermining the whole purpose of the system, which is to provide instant alerts in emergencies. Similarly, expecting a secondary power supply to be provided within a specific time frame does not align with the immediate operational