On an older two-generator, two-motor DC...

Question 1 / 2066636eed28f7522a1c51d85d

Question 1 of 2066636eed28f7522a1c51d85d

On an older two-generator, two-motor DC diesel-electric drive system shown in the illustration, which statement is true? Illustration EL-0141

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Question 1 of 20

66636eed28f7522a1c51d85d

On an older two-generator, two-motor DC diesel-electric drive system shown in the illustration, which statement is true? Illustration EL-0141

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🔍 Key Concepts

• Trace how the A1 and A2 buses connect the various DC generators to both the bow thruster motor and the propulsion armature loop. • Notice which machines are specifically labeled as Main Propulsion Diesel Generators versus auxiliary or gas-turbine driven generators. • Look at switches/contactors S1 and S2 and the heavy black "Propulsion Armature Loop" to see whether one main propulsion generator can operate alone.

💭 Think About

• Which generator outputs are physically connected to the bow thruster DC motor, and which are connected only to the propulsion armature loop? • If you open either S1 or S2, does the remaining main propulsion generator still have a complete circuit through the propulsion motors? • Is there any direct path from the main propulsion generators to the bow thruster motor, or is the thruster isolated to the auxiliary/gas turbine side?

✅ Before You Answer

• Verify which generators share the A1/A2 lines with the bow thruster DC motor. • Verify whether the main propulsion generators (G1 and G2) are tied into the bow thruster circuit at all. • Verify from the diagram whether a single main propulsion generator can complete the propulsion armature loop without the other one being in service.

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Question 1 of 20

On an older two-generator, two-motor DC diesel-electric drive system shown in the illustration, which statement is true? Illustration EL-0141

The auxiliary diesel DC generator may be used to power the bow thruster motor and may also be used to power the main propulsion motors, but not simultaneously.

The gas turbine DC generator may be used to power the bow thruster motor and may also be used to power the main propulsion motors, but not simultaneously.

The main propulsion generators may be used to power the bow thruster motor and may also be used to power the main propulsion motors, but not simultaneously.

Neither main propulsion generator #1 nor main propulsion generator #2 may be used singly in the main propulsion loop. Both are required to drive the main shaft.

Question 1 / 2066636eed28f7522a1c51d85d

Question 1 of 2066636eed28f7522a1c51d85d

On an older two-generator, two-motor DC diesel-electric drive system shown in the illustration, which statement is true? Illustration EL-0141

Back

Question 1 of 20

66636eed28f7522a1c51d85d

On an older two-generator, two-motor DC diesel-electric drive system shown in the illustration, which statement is true? Illustration EL-0141

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed