Aux 1 Unit 8 Q1

Correct Answer: B) Controlling the pitch of a controllable pitch propeller (CPP)

Explanation: Hydraulic systems are used to control the pitch of controllable pitch propellers, allowing for precise adjustment of the propeller blades to optimize performance under different operating conditions.

Correct Answer: B) Contaminated hydraulic fluid or poor maintenance practices

Explanation: Dirt and foreign particles often enter a hydraulic system due to contaminated hydraulic fluid or poor maintenance practices, such as not replacing filters regularly or using dirty tools during maintenance.

Correct Answer: B) Leaks in the suction line or fittings

Explanation: Air can enter a hydraulic system through leaks in the suction line or fittings, especially if these components are not properly sealed, leading to the introduction of air bubbles into the system.

Correct Answer: B) Spongy or erratic operation of hydraulic components

Explanation: Air in a hydraulic system can cause spongy or erratic operation because air is compressible, unlike hydraulic fluid. This can lead to reduced performance and inconsistent operation of hydraulic components.

Correct Answer: B) Corrosion of internal components and reduced lubrication efficiency

Explanation: Separated water in a hydraulic system can lead to corrosion of internal components, reduce the effectiveness of lubrication, and potentially cause emulsification of the hydraulic fluid, leading to further system issues.

Correct Answer: B) Cargo handling equipment such as cranes and hatch covers

Explanation: Hydraulic systems provide the power needed to operate cargo handling equipment like cranes and hatch covers, which require significant force and precise control to safely load and unload cargo.

Correct Answer: B) Leaks in the hydraulic reservoir or poor seals allowing moisture ingress

Explanation: Water can enter a hydraulic system through leaks in the reservoir or poor seals, especially if the system is exposed to a moist environment. This water can then separate from the hydraulic fluid, causing corrosion and other issues.

Correct Answer: B) Increased wear and tear on hydraulic components, leading to potential system failure

Explanation: Dirt and foreign particles can cause abrasion and increased wear on hydraulic components, potentially leading to blockages, reduced efficiency, and eventual system failure.

Correct Answer: B) Deck machinery such as winches and windlasses

Explanation: Hydraulic systems are used to power deck machinery like winches and windlasses, which are essential for handling anchors and mooring lines with the necessary force and control.

Correct Answer: B) Steering gear operation

Explanation: Hydraulic systems are commonly used in the steering gear of a vessel to provide the force needed to move the rudder, allowing for precise and powerful control of the vessel's direction.