From the information given in the...

Question 1 / 2066636eed28f7522a1c51d6c9

Question 1 of 2066636eed28f7522a1c51d6c9

From the information given in the illustration, which of the following statements is correct? Illustration EL-0106

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Question 1 of 20

66636eed28f7522a1c51d6c9

From the information given in the illustration, which of the following statements is correct? Illustration EL-0106

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🔍 Key Concepts

• Trace how power can flow from the ship service diesel generators (SSDGs) and from the emergency diesel generator (EDG) through their respective switchboards • Look for any bus-tie breakers and note their symbols and locations between the main switchboard and the emergency switchboard • Identify where shore power connects and which buses and loads it is able to feed

💭 Think About

• From the one‑line diagram, can the emergency switchboard ever be electrically paralleled with the main switchboard, or are the breakers arranged so only one source feeds the emergency bus at a time? • When the ship is in port on shore power, follow the lines from the shore connection: which buses and load panels can clearly be energized? • Compare the breaker/feeder arrangement for the emergency generator versus the normal 480‑V buses: does any line show a direct connection from the EDG to the main 480‑V bus without going through the emergency switchboard?

✅ Before You Answer

• Verify exactly which breaker is labeled as the main‑emergency bus‑tie and see what it connects between • Check whether the EDG breaker and the bus‑tie breaker appear to be mechanically or electrically interlocked (look for shared/interlocking symbols) so they cannot be closed together • Confirm from the drawing whether shore power lands on the main switchboard, the emergency switchboard, or both, and then see what loads those buses feed

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Question 1 of 20

From the information given in the illustration, which of the following statements is correct? Illustration EL-0106

During normal operation, the main-emergency bus-tie circuit breaker and any on-line ship's service generator circuit breakers are simultaneously closed.

It is possible for the main-emergency bus-tie circuit breaker and the emergency generator circuit breaker to be simultaneously closed.

The emergency generator is capable of being connected directly to the main 480 VAC bus.

Shore power, in port, is only capable of feeding emergency loads.

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Question 1 / 2066636eed28f7522a1c51d6c9

Question 1 of 2066636eed28f7522a1c51d6c9

From the information given in the illustration, which of the following statements is correct? Illustration EL-0106

Back

Question 1 of 20

66636eed28f7522a1c51d6c9

From the information given in the illustration, which of the following statements is correct? Illustration EL-0106

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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