Question 197Electricity & Electronics - QMED

70% to pass

As shown in the illustrated wiring diagram for an engine order telegraph system, what statement concerning the constant ringing and trouble alarm is true? Illustration EL-0113

Diagram for USCG Electrical QMED: As shown in the illustrated wiring diagram for an engine order telegraph...

AThe constant ringing and trouble alarm sounds when there is a power loss from the 115 VAC power supply to the system.

BThe constant ringing and trouble alarm sounds when the transmitter rotor and corresponding indicator rotor are in correspondence.

CThe constant ringing and trouble alarm sounds when the acknowledge handle and indicator arrow are not on the same order.

DThe constant ringing and trouble alarm sounds when there is a power loss from the battery or emergency switchboard as appropriate.

AI Explanation

The correct answer is C. The constant ringing and trouble alarm sounds when the acknowledge handle and indicator arrow are not on the same order. This is correct because the engine order telegraph system is designed to provide clear and reliable communication between the bridge and the engine room. The constant ringing and trouble alarm is a safety feature that alerts the operator when there is a discrepancy between the acknowledge handle and the indicator arrow, indicating a potential miscommunication or error in the system. The other options are incorrect because they do not accurately describe the purpose and function of the constant ringing and trouble alarm in this system.