What happens if the vibration monitor detects excessive vibration levels?

• A. A vibration alarm will come on.
• B. The system automatically increases fuel flow.
• C. The engine will accelerate.
• D. An alert is sent to the control room.

Answer: (A)

When vibration levels exceed the set limit, the monitor triggers an alarm to alert the crew. This immediate alert serves as a fast warning that something abnormal is happening inside the turbine, such as imbalance, bearing wear, or misalignment, so the operators can take action to prevent damage. Increasing fuel flow or accelerating would only worsen the condition, and while some systems may relay alerts to the control room, the essential protective response highlighted here is the vibration alarm coming on.