Aux 1 Unit 15 Q9

1 / 10

Which component is critical in ensuring that power is only supplied to essential systems when the vessel is operating on emergency power?

B) Load shedding devices on the emergency switchboard

A) Circuit breakers on the main switchboard

D) The vessel's ballast pumps

C) The vessel's propulsion system

2 / 10

Which of the following is typically supplied by the emergency switchboard in the event of a main power failure?

C) Entertainment systems

A) Air conditioning system

B) Navigation lights and emergency lighting

D) Galley equipment

3 / 10

Why is it important to monitor the performance of the emergency alternator during the MCA recommended test?

D) To reduce the load on the main generators

B) To ensure the alternator starts automatically and supplies power to the emergency switchboard without any issues

A) To check if the alternator is running faster than normal

C) To measure the fuel consumption of the alternator

4 / 10

What is the purpose of having an automatic transfer switch (ATS) in the electrical distribution system?

D) To reduce the electrical load on the system

A) To automatically switch the power supply from the main generators to the emergency generator when a power failure occurs

B) To increase the voltage of the electrical system

C) To manually start the emergency generator

5 / 10

What is the first step in the MCA recommended procedure for testing the emergency alternator?

D) Manually operate the emergency alternator

A) Disconnect the emergency alternator from the emergency switchboard

C) Start the main generator

B) Simulate a blackout condition by turning off the main power supply to the emergency switchboard

6 / 10

In a vessel’s electrical distribution system, what is the primary function of the main switchboard?

A) To generate electrical power

D) To monitor fuel levels

C) To store electrical energy

B) To distribute electrical power from the main generators to various consumers on the vessel

7 / 10

Which of the following is NOT typically considered a main consumer supplied by the emergency switchboard?

C) Engine room ventilation system

B) Bilge and fire pumps

D) Steering gear

A) Fire detection and alarm systems

8 / 10

In a vessel’s electrical distribution system, what is the primary purpose of the distribution panels connected to the main switchboard?

B) To distribute power to specific areas or systems on the vessel

A) To generate electricity

C) To store electrical energy

D) To control the vessel's speed

9 / 10

After completing the MCA recommended procedure for testing the emergency alternator, what should be done?

B) Record the test results and reset the system to normal operation, ensuring that all systems return to their original state

C) Shut down the main generators

D) Disconnect the alternator permanently

A) Increase the load on the alternator to its maximum capacity

10 / 10

What is the role of the emergency generator in a vessel's electrical distribution system?

A) To supply power to non-essential services

C) To increase the vessel’s speed

B) To provide power to essential systems when the main generators fail or during an emergency

D) To charge the vessel’s batteries

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