Aux 1 Unit 12 Q5

1 / 10

Which of the following types of circuits are generally not affected by preferential tripping to ensure continuous operation?

C) Galley equipment

A) Non-essential HVAC systems

B) Navigational equipment such as radar and GPS

D) Crew entertainment systems

2 / 10

What is the primary purpose of a preferential trip in an electrical system?

C) To disconnect all circuits simultaneously

B) To selectively disconnect non-essential loads to prevent an overload on the power supply and protect the generator

A) To increase the power output of the generator

D) To prevent any circuit from disconnecting

3 / 10

Which of the following circuits should be prioritized to remain operational and therefore not be connected to a preferential trip?

B) Emergency lighting and power systems

D) Water heating systems

A) Refrigeration systems for food storage

C) Entertainment systems

4 / 10

Which type of circuits cannot be connected to a preferential trip?

B) Essential safety and navigational circuits that must remain operational at all times

A) Non-essential lighting circuits

D) Cabin heating systems

C) Entertainment systems

5 / 10

During an overload situation, what is the first action taken by the preferential trip mechanism?

D) Shut down the generator

B) Disconnect non-essential loads from the system to reduce the total load on the generator

C) Disconnect all loads from the system

A) Increase the generator's power output

6 / 10

In what scenario would a preferential trip typically be activated?

B) When the electrical load exceeds the generator's capacity, causing an overload condition

A) When the system is operating under normal conditions

D) When the generator is disconnected from the load

C) When the system is in standby mode

7 / 10

How does a preferential trip determine which circuits to disconnect during an overload?

A) It randomly disconnects circuits

C) It disconnects the circuits that are drawing the most power

D) It disconnects only the circuits that are closest to the generator

B) It disconnects circuits based on a predefined priority list, starting with the least essential loads

8 / 10

Why is it important that propulsion control circuits are not connected to a preferential trip?

C) They consume very little power

A) They are non-essential circuits

D) They can be easily restarted

B) They are essential for maneuvering the vessel and must remain operational to ensure the vessel can be controlled, especially in emergency situations

9 / 10

Which of the following is an example of a circuit that should not be connected to a preferential trip?

C) Cabin lights

B) Fire detection and alarm systems

A) Galley appliances

D) Air conditioning units

10 / 10

What could happen if the preferential trip mechanism fails to operate during an overload condition?

C) All non-essential circuits will remain operational

A) The generator's efficiency will increase

D) The generator will automatically reduce its output

B) The generator could become overloaded, potentially leading to a complete power loss or damage to the generator

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