As shown in the illustration of a DC...

Question 1 / 205eccefa4bacbc34ba4d485e9

Question 1 of 205eccefa4bacbc34ba4d485e9

As shown in the illustration of a DC diesel-electric propulsion drive system, what would be the set up contactor configurations if #1 M/E is to be secured, so that only #2 M/E diesel-generator is set up to supply both propulsion motors? Illustration EL-0141

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🔍 Key Concepts

• DC diesel-electric propulsion layouts and how generators connect into a common propulsion armature loop • The functions of generator contactors (G1, G2) versus the return/path contactors (S1, S2) in the diagram • How securing one M/E means completely isolating its DC generator from the propulsion circuit

💭 Think About

• Trace the heavy black propulsion armature loop and ask: through which contactors must current pass for a generator to feed BOTH motors? • When #1 M/E is secured, which contactors associated with its DC generator must be open so no current can flow to or from that machine? • For the remaining online generator, which pair of contactors must be closed so that both the outgoing and return paths are complete?

✅ Before You Answer

• Verify which contactors are physically drawn in series with M/E #1’s DC generator and the propulsion armature loop • Confirm that the operating generator must have both its G and S contactors closed to complete a circuit to the motors • Ensure the choice you pick leaves only one generator connected to the propulsion armature loop while the other is fully isolated

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Question 1 of 20

contactors G2 and S2 pulled in; contactors G1 and S1 dropped out

contactors G2 and S1 dropped out; contactors G1 and S2 pulled in

contactors G2 and S2 dropped out; contactors G1 and S1 pulled in

contactors G2 and S1 pulled in; contactors G1 and S2 dropped out

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Question 1 / 205eccefa4bacbc34ba4d485e9

Question 1 of 205eccefa4bacbc34ba4d485e9

Back

Question 1 of 20

5eccefa4bacbc34ba4d485e9

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?

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