Aux 1 Unit 10 Q2

1 / 10

What is one of the main reasons for maintaining a small amount of pitch in a CPP when in neutral?

D) To increase the ship's turning radius

C) To reduce the engine's wear and tear

A) To ensure the engine remains loaded

B) To avoid complete loss of propulsion control and to allow for immediate response when needed

2 / 10

What is the primary safety concern that the failsafe position of a CPP aims to address?

A) Engine overheating

D) Excessive noise from the propeller

C) Increased fuel consumption

A) Engine overheating

3 / 10

How can pitch be restored in a controllable pitch propeller (CPP) system if the hydraulic system fails?

D) By switching to an electric backup system

B) By increasing the vessel's speed

A) By manually adjusting the propeller blades using a mechanical override

C) By reducing the engine's power output

4 / 10

Why is the zero pitch position considered a failsafe for CPP systems?

C) It reduces the hydraulic pressure in the system.

A) It increases the vessel's speed.

B) It prevents the vessel from unintended movement if the control system fails, avoiding potential collisions or groundings.

D) It allows for immediate propulsion if the system fails.

5 / 10

In a CPP system, why might full ahead pitch not be chosen as the failsafe position?

A) It would cause the vessel to move forward uncontrollably.

D) It would cause the hydraulic system to overheat.

B) It reduces the engine's efficiency.

C) It increases the vessel's turning radius.

6 / 10

Why is it necessary for a controllable pitch propeller (CPP) to maintain a small amount of pitch when in the neutral position?

B) To prevent cavitation and provide a slight thrust that aids in maintaining control of the vessel

A) To reduce fuel consumption

C) To increase the vessel's speed

D) To cool down the propeller blades

7 / 10

Why is it important to have a manual override system for pitch adjustment in a CPP system?

D) To decrease the load on the engine

C) To reduce the vessel's fuel consumption

B) To ensure that the vessel can still be maneuvered if the hydraulic system fails, maintaining control and safety

A) To increase the vessel's speed

8 / 10

What is the typical failsafe position for a controllable pitch propeller (CPP)?

C) Zero pitch (neutral position)

B) Full ahead pitch

D) Full astern pitch

A) Fully feathered

9 / 10

How does maintaining a small amount of pitch in neutral benefit the overall operation of the CPP system?

C) It increases the load on the hydraulic system.

D) It decreases the vessel's fuel efficiency.

A) It reduces the vessel's speed.

B) It ensures smoother transitions between neutral and full ahead or astern positions, enhancing maneuverability.

10 / 10

What is a common method used to manually adjust the pitch in the event of a hydraulic failure in a CPP system?

C) Increasing the vessel's speed to force the blades into position

D) Turning off the main engine

A) Using a backup hydraulic pump

B) Using a manual hand pump or mechanical lever system to move the blades

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