Aux 1 Unit 14 Q4

1 / 10

What long-term damage could occur if a vessel repeatedly connects to an incompatible shore supply without proper checks?

B) Repeated exposure to incorrect voltage or frequency could lead to cumulative damage to the vessel’s electrical systems, shortening equipment lifespan and increasing maintenance costs.

D) The shore supply will eventually adapt to the vessel's requirements.

C) The vessel's power output will increase.

A) The vessel will become more energy-efficient.

2 / 10

Why is it important to verify the shore supply's available power (capacity) before connecting it to the vessel?

B) To determine the cable color coding.

D) To identify the shore power plug type.

A) To ensure the shore supply can handle the vessel's load without overloading, which could lead to power outages or damage to the shore supply infrastructure.

C) To adjust the length of the shore cable.

3 / 10

What might occur if the shore supply frequency does not match the vessel’s electrical system?

D) The shore supply will automatically adjust its frequency.

C) The vessel's speed will increase.

A) The vessel's electrical systems will operate more efficiently.

B) Electrical motors and other frequency-sensitive equipment may overheat, malfunction, or be damaged due to improper operation at the incorrect frequency.

4 / 10

Which of the following parameters must be checked to ensure compatibility before connecting a shore supply to a vessel’s distribution system?

B) The voltage of the shore supply

C) The frequency of the shore supply

D) The shore supply's available power (capacity)

A) The color of the shore supply cable

5 / 10

Why is it essential to check the voltage of the shore supply before connecting it to the vessel?

C) To identify the length of the shore power cable.

D) To measure the temperature of the shore supply transformer.

B) To determine the color of the shore power cable.

A) To ensure it matches the vessel’s distribution system voltage, preventing overvoltage or undervoltage conditions that could damage onboard equipment.

6 / 10

What is a likely outcome if the shore supply’s available power (capacity) is insufficient for the vessel's needs?

D) The vessel will draw power from the shore supply without any limitations.

C) The vessel's systems will operate at reduced efficiency without any other issues.

B) The shore supply could become overloaded, leading to tripping of circuit breakers, power outages, or damage to the shore-side infrastructure.

A) The vessel's electrical systems will automatically shut down safely.

7 / 10

What could happen if the frequency of the shore supply does not match the vessel’s distribution system?

B) The vessel's electrical equipment may malfunction or operate inefficiently, leading to potential damage.

C) The shore power cable will become longer.

D) The vessel's hull will change color.

A) The vessel’s lighting systems will become brighter.

8 / 10

If an incorrect shore supply connection results in a blackout on the vessel, what might be a necessary corrective action?

D) Continue using the shore supply despite the blackout.

B) Increase the vessel's speed.

A) Immediately disconnect the shore supply and revert to the vessel's emergency generator until the issue is resolved.

C) Ignore the blackout and wait for the power to return automatically.

9 / 10

What is a potential consequence of connecting a shore supply with a voltage that is too high for the vessel’s distribution system?

A) The vessel will have improved electrical efficiency.

B) The vessel's electrical equipment could suffer overvoltage damage, potentially leading to failure or even fire hazards.

D) The vessel's lights will simply become brighter without any other effect.

C) The shore power cable will automatically adjust to the correct voltage.

10 / 10

What could be a consequence of connecting a shore supply with a lower voltage than the vessel’s system requires?

C) The shore power cable will increase in length.

A) The vessel's systems will operate normally.

D) The vessel's electrical systems will simply operate at a lower capacity without any damage.

B) The vessel's equipment may operate inefficiently or fail to start, potentially leading to undervoltage damage or operational issues.

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