Aux 1 Unit 10 Q6

1 / 10

Which of the following is a safety advantage of using a CPP?

C) It increases the likelihood of mechanical failure.

B) It allows for quicker response to changes in navigational needs, such as avoiding obstacles or stopping the vessel quickly, enhancing safety.

A) It reduces the vessel's responsiveness in emergency situations.

D) It limits the vessel's ability to stop quickly.

2 / 10

Which of the following is an advantage of a controllable pitch propeller (CPP)?

D) Constant power output regardless of conditions

A) Fixed thrust at all speeds

C) Reduced maneuverability

B) Ability to change the pitch of the blades, allowing for optimal efficiency at different speeds and load conditions

3 / 10

What is a disadvantage of CPPs in terms of efficiency under certain operating conditions?

B) They can be less efficient than fixed-pitch propellers at a constant, optimal load and speed, where a fixed-pitch propeller might be specifically designed for that condition.

D) They decrease the vessel's maneuverability.

C) They reduce the vessel's speed.

A) They are always more efficient than fixed-pitch propellers.

4 / 10

How does a controllable pitch propeller contribute to fuel efficiency?

B) By optimizing thrust for varying conditions, reducing fuel consumption compared to fixed-pitch propellers

C) By increasing fuel consumption at all times

A) By maintaining a constant fuel consumption rate

D) By running the engine at maximum power continuously

5 / 10

Why is a CPP advantageous in terms of reversing the vessel's direction?

A) It requires stopping the engine to reverse direction.

C) It reduces the vessel's speed when reversing.

D) It makes reversing the vessel more complex.

B) It allows for immediate reversal of thrust direction by changing the blade pitch without stopping the engine, making it faster and more efficient than reversing a fixed-pitch propeller.

6 / 10

How does a controllable pitch propeller benefit vessel maneuverability?

D) By eliminating the need for a rudder

A) By locking the propeller in a fixed position

C) By reducing the vessel's speed

B) By allowing rapid changes in thrust direction without changing engine speed, improving maneuverability, especially in docking situations

7 / 10

What is a primary disadvantage of controllable pitch propellers (CPPs) compared to fixed-pitch propellers?

C) Lower fuel efficiency

D) Reduced maneuverability

A) Simpler design

B) Higher initial cost and complexity due to the additional mechanisms required to adjust blade pitch

8 / 10

What advantage does a CPP offer in terms of engine load management?

A) It maintains a constant engine load at all times.

D) It reduces the engine's ability to handle varying loads.

B) It allows the engine to operate at a constant RPM while adjusting the propeller pitch to manage varying loads, leading to more stable and efficient engine operation.

C) It increases the engine load in all conditions.

9 / 10

Why might CPPs be less reliable than fixed-pitch propellers?

B) Due to the potential for failure in the hydraulic or control systems, which are more complex and have more points of potential failure compared to the simpler fixed-pitch designs

A) Because they are less efficient in all conditions

D) Because they are not suitable for large vessels

C) Because they require more power to operate

10 / 10

How does the complexity of CPPs impact maintenance requirements?

A) It reduces the need for maintenance.

C) It simplifies the maintenance process.

D) It eliminates the need for regular inspections.

B) It increases the maintenance requirements due to the intricate hydraulic and control systems involved in pitch adjustment.

Your score is