What indicates a properly functioning connection at a terminal point?

• A. A firm click when connectors are mated and a clear signal when tested.
• B. A blue LED indicates proper connection.
• C. A loud buzzing sound when powered.
• D. No audible signal but a visual check passes.

Answer: (A)

In a sound-powered system, you judge a good terminal connection by two concrete cues: the physical seating and an audible test result. When the connectors mate, you should feel and hear a firm, definite click that confirms the contacts are fully seated. Then you run a test and get a clear signal, meaning the circuit is complete and capable of transmitting audio without ambiguity. Visual indicators like an LED aren’t part of how these systems verify connections, since they rely on the operator’s hearing, not powered indicators. A loud buzzing would point to a fault or improper power, and relying only on a visual check won’t confirm that the line actually carries sound. So a firm click plus a clear audible signal during testing best shows a properly functioning connection.