Hotel Service Unit 16 Q6 Quiz

Correct Answer:
B) To reduce vessel roll by generating lift forces

Explanation:
Active fin stabilizers are designed to counteract vessel roll by creating lift forces, which oppose the rolling motion and help stabilize the vessel.

Correct Answer:
A) At high vessel speeds

Explanation:
Active fin stabilizers rely on the flow of water over the fins to generate lift; therefore, they are most effective at higher speeds when there is sufficient water flow.

Correct Answer:
B) They increase fuel consumption due to added drag

Explanation:
The fins create additional drag when deployed, which can increase fuel consumption, especially over long distances.

Correct Answer:
B) It senses vessel roll and signals the control system to adjust fin angles

Explanation:
The gyroscope detects the vessel’s roll and communicates with the control system, which then adjusts the fin angles to generate counteracting lift.

Correct Answer:
A) By adjusting the angle of the fins relative to water flow

Explanation:
Active fin stabilizers operate by altering the angle of the fins, creating lift forces that counteract roll when the vessel moves through water.

Correct Answer:
B) Automatic control system with gyroscope sensors

Explanation:
Gyroscope sensors detect roll and send signals to an automatic control system, which adjusts the fin angle to generate the necessary counteracting lift.

Correct Answer:
B) By adjusting fin angles to generate more lift

Explanation:
The control system increases the fin angle to create more lift, countering the additional roll caused by the larger waves.

Correct Answer:
B) They actively counter roll at higher speeds, providing dynamic stabilization

Explanation:
Active fin stabilizers are effective at higher speeds, where they generate lift in response to water flow, unlike passive systems that rely on vessel inertia.

Correct Answer:
A) It controls the lift generated by the fins to counteract rolling

Explanation:
The angle of attack determines the lift force produced by the fins. By adjusting this angle, the stabilizers can generate sufficient force to reduce rolling.